News
01.11.2024Janine Graser is DPG's "Physikerin der Woche"
Janine Graser has been recognised as the "Physikerin der Woche" (Female physicist of the week) by the German Physical Society (DPG). The "Physikerin der Woche" initiative recognises female physicists based in Germany, as well as German women working internationally, for outstanding research. Janine Graser was recognised for her research activities in the Collaborative Research Center SFB/TRR270 HoMMage Project B12. The project focuses on optimizing magnets by using machine learning to identify material inhomogeneities. Additionally, she is responsible for science communication within the AKPIK (Working Group on Physics, Modern Information Technology, and Artificial Intelligence) of the DPG, where she is currently creating a series of Instagram posts that highlight the role of AI in physics. Congratulations to Janine Graser on this achievement!
10.10.202410th RUHR-Symposium on AI for Functional Materials
The CENIDE - Center for Nanointegration Duisburg-Essen recently hosted the 10th RUHR-Symposium at the Fraunhofer inHaus-Zentrum in Duisburg, focusing on "Artificial Intelligence for Functional Materials." The event featured presentations from researchers at the University of Duisburg-Essen, Forschungszentrum Jülich, TU Darmstadt, and industry leaders such as Krohne and Microsoft. Keynote talks by Frederik Ahlemann and Henrik Hahn inspired engaging discussions throughout the symposium. This year's event was organized by Prof. Doris Segets, Prof. Karin Everschor-Sitte, and Prof. Torben Weis.
25.07.2024SPICE Workshop "Spin Textures: Magnetism Meets Plasmonics"
The SPICE workshop "Spin Textures: Magnetism Meets Plasmonics," brought together world-leading experts to explore the intersection of magnetic and electromagnetic spin textures. Participants examined how complex electron-atom interactions in solids lead to emergent phenomena like magnetic spin textures and plasmonic excitations, highlighting the challenges of creating tailored spin structures. Held in July at Engelthal Monastery, Wasem, the event promoted collaboration to advance research in this innovative field.
Organized by Pascal Dreher, Frank Meyer zu Heringdorf, and TWIST members Maria Azhar and Karin Everschor-Sitte, the workshop featured great overview talks by Pascal and Maria. Recordings and more information are available at https://www.spice.uni-mainz.de/spin-textures-home/. The organizers thank CRC/TRR 270, CRC 1242, and CENIDE for their financial support.
20.07.2024TWIST Research highlighted in DPG Social Media Campaign
Among the featured research is our work within the CRC/TRR 270 HoMMage. The post details how we use AI to identify and characterize magnetic structures.
27.06.2024Physical Review B Publication
A paper on "Revealing ultrafast domain wall motion in Mn2Au through permalloy capping" has been published in Physical Review B. The authors show that coupling a thin ferromagnet (permalloy) with an antiferromagnet (Mn2Au) allows controlled manipulation and imaging of antiferromagnetic domains. This method achieves domain wall speeds of 8.5 km/s and could advance high-density storage and THz computing technologies.
Detailed Information:
Revealing ultrafast domain wall motion in Mn2Au through permalloy capping
Sarah Jenkins, Tobias Wagner, Olena Gomonay, and Karin Everschor-Sitte
Physical Review B 109, 224431 (2024)
25.06.2024Nature Reviews Physics Publication
A paper on "Topological magnetic and ferroelectric systems for reservoir computing" has been published in Nature Reviews Physics. The researchers are exploring magnetic skyrmions and ferroelectric domain walls as key elements for future information technology. These nanoscale systems are ideal for reservoir computing, which turns non-linear problems into linearly solvable ones. They offer potential for device miniaturization, increased complexity, and versatile input/output options.
Detailed Information:
Topological magnetic and ferroelectric systems for reservoir computing
Karin Everschor-Sitte, Atreya Majumdar, Katharina Wolk, and Dennis Meier
Nature Reviews Physics 6, 455 (2024)
24.06.2024Dr. Maria Azhar is DPG's "Physikerin der Woche"
Dr. Maria Azhar has been recognised as the "Physikerin der Woche" (Female physicist of the week) by the German Physical Society (DPG). The "Physikerin der Woche" initiative recognises female physicists based in Germany, as well as German women working internationally, for outstanding research. Among other research works, Dr. Azhar was recognised for her recent prediction of new topological defects known as screw dislocations. Congratulations to Dr. Maria Azhar on this achievement!
10.05.2024Physical Review B Publication
A paper on "Manipulating vortices with domain walls in superconductor-ferromagnet heterostructures" has been published in Physical Review B. The authors delve into the interplay between vortices and domain walls in superconductor-ferromagnet heterostructures, underscoring the importance of exchange fields and spin-orbit coupling over conventional stray field models. Through simulations and theory, the paper elucidates how Rashba spin-orbit coupling influences magnetoelectric interactions, presenting opportunities for improved functionalities in heterostructure devices.
Detailed Information:
Manipulating vortices with domain walls in superconductor-ferromagnet heterostructures
Sebastián A. Díaz, Jonas Nothhelfer, Kjetil M. D. Hals, Karin Everschor-Sitte
Physical Review B 109, L201110 (2024)
09.05.2024Communications Physics Publication
A paper on "Spacetime magnetic hopfions from internal excitations and braiding of skyrmions" has been published in Communications Physics. Here, the authors introduce spacetime magnetic hopfions, enhancing the dynamics of topological solitons. These magnetic textures develop spacetime topology when driven by a time-periodic force. The paper outlines construction methods and potential applications in nanopatterned grids and frustrated magnets, with adjustable topological properties offering new research directions.
Detailed Information:
Spacetime magnetic hopfions from internal excitations and braiding of skyrmions
Ross Knapman, Timon Tausendpfund, Sebastián A. Díaz, Karin Everschor-Sitte
Communications Physics 7, 151 (2024)
04.04.2024Physik in unserer Zeit Publication
A paper on "Rechnen mit magnetischen Wirbeln" (Calculating with Magnetic Whirls) has been published in Physik in unserer Zeit. The authors delve into the utilization of material dynamics for physical reservoir computing. They highlight nanoscale magnetic patterns, such as skyrmions, which act as efficient and controllable reservoirs compatible with modern hardware. These systems demonstrate exceptional performance in tasks like spoken-digit recognition and benchmark problems.
Detailed Information:
Rechnen mit magnetischen Wirbeln
Karin Everschor-Sitte, Robin Msiska, Atreya Majumdar
Physik in unserer Zeit, 55: 183-189 (2024)
01.04.2024Kübra Kalkan joins TWIST Group
Kübra Kalkan joins the TWIST Group as a PhD Candidate. We are looking forward to a successful collaboration.
Contact information:
Kübra Kalkan
Office: MG 385
Email: kuebra.kalkan@uni-due.de
28.03.2024Nano Futures Publication
A roadmap for “unconventional computing with nanotechnology” has been published in Nano Futures. This collaboration between Giovanni Finocchio from the University of Messina, Karin Everschor-Sitte from the University of Duisburg-Essen, and others provides a comprehensive roadmap for neuromorphic computing using electron spins, memristive devices, two-dimensional nanomaterials, nanomagnets, and various dynamical systems. They also address computational paradigms such as Reservoir Computing, Ising machines, Bayesian inference engines, probabilistic computing with p-bits, processing in memory, etc.
Detailed Information:
Roadmap for unconventional computing with nanotechnology
G. Finocchio, ..., K. Everschor-Sitte et al.
Nano Futures 8, 012001 (2024)
02.02.2024Neuromorphic Computing and Engineering Publication
A focus issue on “Topological Solitons for Neuromorphic Systems” has been published in Neuromorphic Computing and Engineering. This collaboration between Prof. Dennis Meier from the Norwegian University of Science and Technology, Prof. Jorge Iñiguez from the Luxembourg Institute of Science and Technology & University of Luxembourg, Prof. Davi Rodrigues from Politecnico di Bari in Italy, and Prof. Karin Everschor-Sitte from the University of Duisburg-Essen covers the recent progress in the field of neuromorphic systems based on topological solitons.
Detailed Information:
Focus issue on Topological Solitons for Neuromorphic Systems
D. Meier, J. Iñiguez-Gonzalez, D. Rodrigues, and K. Everschor-Sitte
Neuromorphic Computing and Engineering 4, 010202 (2024)
30.10.2023Robin Msiska wins Lightning Talks Session Award
Robin Msiska has won the Lightning Talks Session award at the MMM 2023 Conference in Dallas, TX. Sponsored by AIP Publishing and the IEEE Magnetics Society, the event required young professionals to present their research in a three-minute format. Congratulations to Robin Msiska!
20.10.2023Physical Review Applied Publication
A paper on “Spatial analysis of physical reservoir computers” has been published in Physical Review Applied. This paper introduces task-agnostic spatial measures for efficiently evaluating nonlinearity and memory in magnetic skyrmion-based reservoirs, enabling parallel parameter searches. The research unveils a natural trade-off between memory and nonlinearity, paving the way for enhanced performance in specific tasks. This advancement in spatial analysis offers valuable insights for designing energy-efficient and high-performance reservoirs.
Detailed Information:
Spatial analysis of physical reservoir computers
J. Love, R. Msiska, J. Mulkers, G. Bourianoff, J. Leliaert, and K. Everschor-Sitte
Physical Review Applied 20, 044057 (2023)
16.10.20232024 Wohlfarth Lecturer
Prof. Karin Everschor-Sitte has been selected as the 2024 Wohlfarth Lecturer by the UK Institute of Physics magnetism group and the IEEE Magnetics Society UK & Ireland chapter. This honor recognizes her contributions to the fields of topologically protected magnetic structures and unconventional computing. She will present the Wohlfarth Memorial Lecture at the Magnetism 2024 conference in Loughborough, UK, on March 25th and 26th, 2024. Congratulations to Prof. Karin Everschor-Sitte on this well-deserved recognition.
12.10.2023Physical Review Letters Publication
A paper on "Voltage-Controlled High-Bandwidth Terahertz Oscillators Based on Antiferromagnets" has been published in Physical Review Letters. This collaboration between Mike Lund and Prof. Kjetil Hals from the University of Agder in Norway, Prof. Davi Rodrigues from Politecnico di Bari in Italy, and Prof. Karin Everschor-Sitte from the University of Duisburg-Essen investigates theoretical self-oscillations in nonlinear antiferromagnets with a kagome lattice structure in the THz range, driven by spin-orbit torques.
Detailed Information:
Voltage-Controlled High-Bandwidth Terahertz Oscillators Based on Antiferromagnets
M. Lund, D. Rodrigues, K. Everschor-Sitte, and K. Hals
Physical Review Letters 131, 156704 (2023)
01.08.2023Dr. Maria Azhar joins TWIST Group
Dr. Maria Azhar joins the TWIST Group as a Postdoctoral Researcher. We are looking forward to a successful collaboration.
Contact information:
Dr. Maria Azhar
Office: MG 386
Email: maria.azhar@uni-due.de
01.07.2023Dr. Atreya Majumdar joins TWIST Group
Dr. Atreya Majumdar joins the TWIST Group as a Postdoctoral Researcher. We are looking forward to a successful collaboration.
Contact information:
Dr. Atreya Majumdar
Office: MG 384
Email: atreya.majumdar@uni-due.de
15.12.2022Dr. Amin Khavasi joins TWIST Group
Dr. Amin Khavasi joins the TWIST Group as an Associate Professor. We are looking forward to a successful collaboration.
Contact information:
Dr. Amin Khavasi
Office: MG 389
Email: amin.khavasi@uni-due.de
15.11.2022Sandra Chulliparambil Shaju joins TWIST Group
Sandra Chulliparambil Shaju joins the TWIST Group as a PhD Candidate. We are looking forward to a successful collaboration.
Contact information:
Sandra Chulliparambil Shaju
Office: MG 389
Email: sandra.chulliparambil-shaju@uni-due.de
01.07.2022Dr. Nasim Bazazzadeh joins TWIST Group
Dr. Nasim Bazazzadeh joins the TWIST Group as a Postdoctoral Researcher. We are looking forward to a successful collaboration.
Contact information:
Dr. Nasim Bazazzadeh
Office: MG 388
Email: n_bazazzadeh@sbu.ac.ir
13.06.2022Physical Review B Publication
A paper on “Steering Majorana braiding via skyrmion-vortex pairs: A scalable platform” from Jonas Nothhelfer et al. resulting from a collaboration between Johannes Gutenberg University of Mainz, Technical University of Dresden, Reserach Center in Jülich, University of Cologne, University of Agder and University of Duisburg-Essen has been published in Physical Review B.
In this paper, they exploit the fact that skyrmion-vortex pairs in superconductor-ferromagnet heterostructures hosting Majorana zero modes can be easily controlled in two spatial dimensions, thereby contributing to the path towards scalable topological quantum computing.
Detailed information:
Steering Majorana braiding via skyrmion-vortex pairs: A scalable platform
Jonas Nothhelfer, Sebastián A. Díaz, Stephan Kessler, Tobias Meng, Matteo Rizzi, Kjetil M. D. Hals and Karin Everschor-Sitte
Phys. Rev. B 105, 224509 (2022)
08.06.2022Physical Review Applied Publication
A paper on “Nonzero Skyrmion Hall Effect in Topologically Trivial Structures” resulting from a collaboration between Robin Msiska and Twist Group Leader Prof. Dr. Karin Everschor-Sitte affiliated with the University of Duisburg-Essen, Prof. Dr. Davi Rodrigues from Politecnico di Bari in Italy and Prof. Dr. Jonathan Leliaert from Ghent University in Belgium has been published in Physical Review Applied.
In this paper, they disprove the widely held assumption that the skyrmion Hall effect vanishes for overall topologically neutral structures such as (synthetic) antiferromagnetic skyrmions and skyrmionium. They show that for spin-orbit torque-driven objects the net Magnus force does not necessarily vanish.
Detailed information:
Nonzero Skyrmion Hall Effect in Topologically Trivial Structures
Robin Msiska, Davi R. Rodrigues, Jonathan Leliaert, and Karin Everschor-Sitte
Phys. Rev. Applied 17, 064015 (2022)
06.06.2022Nature Communications Publication
A paper on “Skyrmion pinning energetics in thin film systems” resulting from a collaboration between different teams from the Johannes Gutenberg-University Mainz, Charles University Prague, and Twist Group Leader Prof. Dr. Karin Everschor-Sitte affiliated with the University of Duisburg-Essen, has been published in Nature Communications.
In this paper they investigate experimentally and theoretically the pinning effects of skyrmions, which often pose a challenge for device applications.
Detailed information:
Skyrmion pinning energetics in thin film systems
Raphael Gruber, Jakub Zázvorka, Maarten A. Brems, Davi R. Rodrigues, Takaaki Dohi, Nico Kerber, Boris Seng, Mehran Vafaee, Karin Everschor-Sitte, Peter Virnau and Mathias Kläui
Nature Communications 13, 3144 (2022)
13.05.2022Congratulations to Lucas Görzen winnning the award of the Gutenberg Lehrkolleg (GLK) for his bachelor thesis!
We congratulate Lucas Görzen for winning the award of the Gutenberg Lehrkolleg (GLK) for his bachelor thesis in the Department 08 Physics, Mathematics and Computer Science at the Johannes Gutenberg University in Mainz. The GLK issues prizes for outstanding theses in recognition of special student achievements through selection committees for studies and teaching (FASL) in the departments. The prizewinner Lucas Görzen wrote his award-winning bachelor thesis on "Composite Topological Structures in Superconductor-Ferromagnet Heterostructures" under the supervision of Prof. Dr. Karin Everschor-Sitte and co-supervision of Dr. Sebastián Díaz and Jonas Nothhelfer in March 2021. The Twist team would like to thank Lucas for his scientific contribution to research on topological structures. An overview of all award winners can be found here: https://www.glk.uni-mainz.de/praemierung-studentischer-arbeiten/
02.05.2022Physical Review B Publication
A paper on “Dzyaloshinskii-Moriya induced spin-transfer torques in kagome antiferromagnets” resulting from a collaboration between Davi R. Rodrigues from University of Bari, Akshaykumar Salimath and Kjetil M. D. Hals from University of Agder as well as Twist Group Leader Karin Everschor-Sitte affiliated with the University of Duisburg-Essen, has been published in Physical Review B.
In this paper, they predict a new coupling mechanism between antiferromagnetic domain walls (DWs) and spin currents, produced by the relativistic Dzyaloshinskii-Moriya interaction (DMI) for kagome AFMs with broken mirror symmetry. In addition, they show that the DMI induces a highly nontrivial, twisted DW profile that is controllable via two linearly independent components of the spin accumulation.
Detailed information:
Dzyaloshinskii-Moriya induced spin-transfer torques in kagome antiferromagnets
Davi R. Rodrigues, Akshaykumar Salimath, Karin Everschor-Sitte and Kjetil M. D. Hals
Phys. Rev. B 105, 174401 (2022)
14.03.2022Robin Msiska featured in UDE magazine CAMPUS:REPORT
TWIST group member Robin Msiska is featured in UDE magazine CAMPUS:REPORT, chronicling his globe spanning academic career as well as recent experiences in Germany. He comments on his move from Mainz to Duisburg, lessons learned while studying in Japan and his hobbies such as digital art.
Full article in CAMPUS:REPORT (2022, Volume 1).
03.01.2022Dr. Jonathan Atteia joins TWIST Group
Dr. Jonathan Atteia joins the TWIST Group as a Postdoctoral Researcher. We are looking forward to a successful collaboration.
Contact information:
Dr. Jonathan Atteia
Office: MG 389
Email: jonathan.atteia@uni-due.de
03.01.2022Alessandro Pignedoli joins TWIST Group
Alessandro Pignedoli joins the TWIST Group as a PhD Candidate. We are looking forward to a successful collaboration.
Contact information:
Alessandro Pignedoli
Office: MG 386
Email: alessandro.pignedoli@uni-due.de
11.11.2021Nature Communications Publication
A paper on “Readout of an antiferromagnetic spintronics system by strong exchange coupling of Mn2Au and Permalloy” resulting from a collaboration between different teams from the Johannes Gutenberg-University Mainz and Twist Group Leader Karin Everschor-Sitte affiliated with the University of Duisburg-Essen, has been published in Nature Communications.
In this paper, they demonstrate strong exchange coupling of the metallic antiferromagnet Mn2Au that exhibits Néel spin-orbit torques with thin ferromagnetic Permalloy layers and show one-to-one imprinting of the antiferromagnetic on the ferromagnetic domain pattern. This allows to benefit from the well-established read-out methods of ferromagnets, while the essential advantages of antiferromagnetic spintronics like ultra-fast dynamics and stability are only slightly diminished.
Detailed information:
Readout of an antiferromagnetic spintronics system by strong exchange coupling of Mn2Au and Permalloy
S. P. Bommanaboyena, D. Backes, L. S. I. Veiga, S. S. Dhesi, Y. R. Niu, B. Sarpi, T. Denneulin, A. Kovács, T. Mashoff, O. Gomonay, J. Sinova, K. Everschor-Sitte, D. Schönke, R. M. Reeve, M. Kläui, H.-J. Elmers and M. Jourdan
Nature Communications 12, 6539 (2021)
01.11.2021Communications in Applied Mathematics and Computational Science Publication
A paper on “Scalable computational measures for entropic detection of latent relations and their applications to magnetic imaging” resulting from a collaboration between Illia Horenko from University of Lugano in Switzerland, Terence O’Kane from University of Tasmania, the postdoctoral researcher Davi Rodrigues and Twist Group Leader Karin Everschor-Sitte both affiliated with the University of Duisburg-Essen, has been published in Communications in Applied Mathematics and Computational Science.
In this paper, they introduce two novel computationally-scalable data relation measures the latent dimension and the latent entropy taking into account latent temporal relations between processes of interest and analyse their mathematical and computational properties. They have the potential to assist current efforts to enhance the resolution of experimental techniques by providing key insights into the noisy observed data when common data measures fail. These results are highly relevant to detect subtle material inhomogeneity patterns in magnetic imaging. For example these data-driven tools can be used to visualize inhomogeneities in magneto-optical Kerr effect measurements and help to explicitly resolve impurities and pinning centres.
Detailed information:
Scalable computational measures for entropic detection of latent relations and their applications to magnetic imaging
Illia Horenko, Davi Rodrigues, Terence O'Kane and Karin Everschor-Sitte
Communications in Applied Mathematics and Computational Science 16, 2 (2021)
11.10.2021Congratulations to Jake Love winnning the Best Picture Award 2021 of the DFG Priority Program SPP2137 Skyrmionics!
Congratulations to Jake Love winning the Best Picture Award 2021 of the DFG Priority Program SPP2137! Besides Jonathan Leliaert, George Bourianoff and Karin Everschor-Sitte, Jake Love from the TWIST team, affiliated with the University of Duisburg-Essen won the Best Picture Award 2021 at the Skyrmionics Picture Competition of the DFG Priority Program SPP2137 Skyrmionics – Topological Spin Phenomena in Real-Space for Applications. The awarded figure depicts a gradual overlay of the non-linearity (red) and memory capacity (blue) of a magnetic skyrmion reservoir computer.
08.10.2021Physical Review Letters Publication and Journal Front Cover Figure
A paper on “Spin-Wave Driven Bidirectional Domain Wall Motion in Kagome Antiferromagnets” resulting from a collaboration between K. M. D. Hals, A. Salimath both from University of Agder in Norway and the postdoctoral researcher D. R. Rodrigues and Twist Group Leader Karin Everschor-Sitte affiliated with the Johannes Gutenberg-University Mainz and the University of Duisburg-Essen, has been published in Physical Review Letters 127, 157203 (2021).
In this paper, they predict a mechanism to controllably manipulate domain walls in kagome antiferromagnets via a single linearly polarized spin-wave source. They showed that the speed and direction of the domain wall motion can be regulated by tuning the frequency of the applied spin wave. These results are highly relevant for applications in the field of antiferromagnetic insulator devices. The article is featured on the front cover of the Physical Review Letters Journal (Volume 127, Issue 15, 08 October 2021).
Detailed information:
Spin-Wave Driven Bidirectional Domain Wall Motion in Kagome Antiferromagnets
D. R. Rodrigues, A. Salimath, K. Everschor-Sitte and K. M. D. Hals
Phys. Rev. Let. 127, 157203 (2021)
23.09.2021Congratulations to Ross Knapman winnning the 3rd poster prize at IOPmaterials!
Congratulations to Ross Knapman winnning the 3rd poster prize at IOPmaterials! Besides the first prize to Marcos Guimaraes from the University of Groningen and the second prize to Yang Sun from Columbia University, Ross Knapman from the TWIST team, affiliated with the Johannes Gutenberg-University Mainz and the University of Duisburg-Essen won the third prize of the IOPmaterials poster competition EmergingLeaders.
For further information, visit https://twitter.com/IOPmaterials/status/1440994393327116288.
26.08.2021Book Chapter Publication in Chirality, Magnetism and Magnetoelectricity
A book chapter on “Current-Induced Dynamics of Chiral Magnetic Structures: Creation, Motion, and Applications” resulting from a collaboration between Jan Masell from RIKEN Center for Emergent Matter Science in Japan and Twist Group Leader Karin Everschor-Sitte, has been published in a book about Chirality, Magnetism and Magnetoelectricity.
In this work, they review how spin-transfer and spin-orbit-torques can be exploited to create and move chiral magnetic textures in magnets with broken inversion symmetries, including domain walls and skyrmions using electric currents.
Detailed information:
Current-Induced Dynamics of Chiral Magnetic Structures: Creation, Motion, and Applications
Jan Masell and Karin Everschor-Sitte
Book Chapter in Chirality, Magnetism and Magnetoelectricity. Topics in Applied Physics, Vol. 138, Springer (2021)
20.07.2021Journal of Physics D: Applied Physics Publication
A paper on “Current-induced H-shaped-skyrmion creation and their dynamics in the helical phase” resulting from a collaboration between Jan Masell from RIKEN Center for Emergent Matter Science in Japan, PhD Candidate Ross Knapman, postdoctoral researcher Davi Rodrigues and Twist Group Leader Karin Everschor-Sitte affiliated with the Johannes Gutenberg-University Mainz and the University of Duisburg-Essen, has been published in Journal of Physics D.
In this paper, they propose a protocol to create topological magnetic structures in helical magnets, which confine the motion of skyrmions along one-dimensional channels formed by helices to allow high-speed skyrmion motion. They furthermore analyse the stability and current-driven motion of the skyrmions in a helical background with in-plane uniaxial anisotropy fixing the orientation of the helices. These results are highly relevant for skyrmion racetrack-like applications.
Detailed information:
Current-induced H-shaped-skyrmion creation and their dynamics in the helical phase
Ross Knapman, Davi R. Rodrigues, Jan Masell and Karin Everschor-Sitte
Journal of Physics D: Applied Physics 54 404003 (2021)
08.07.2021Physical Review Applied Publication
A paper on “Nonlinear Dynamics of Topological Ferromagnetic Textures for Frequency Multiplication” resulting from a collaboration between Morteza Mohseni and Philipp Pirro both from TU Kaiserslautern and postdoctoral researcher Davi R. Rodrigues, PhD Candidate Jonas Nothhelfer, PhD Candidate Ross Knapman and Twist Group Leader Karin Everschor-Sitte affiliated with the Johannes Gutenberg-University Mainz and the University of Duisburg-Essen, has been published in Physical Review Applied.
In this paper, they propose that the nonlinear radio-frequency dynamics and nanoscale size of topological magnetic structures associated with their well-defined internal modes advocate their use as in materio scalable frequency multipliers for spintronic systems. They explore the excitation of eigenmodes of of isolated ferromagnetic skyrmions by fractions of the corresponding eigenfrequencies.
Detailed information:
Nonlinear Dynamics of Topological Ferromagnetic Textures for Frequency Multiplication
Davi R. Rodrigues, Jonas Nothhelfer, Morteza Mohseni, Ross Knapman, Philipp Pirro and Karin Everschor-Sitte
Physical Review Applied 16, 014020 (2021)
28.04.2021Congratulations to Karin Everschor-Sitte on her professorship at the University of Duisburg-Essen
Karin Everschor-Sitte has accepted a call for a professorship in Theoretical Physics at the University of Duisburg-Essen.
The press release of April 2021 can be found here.
19.03.2021iScience Publication
A paper on “A deeper look into natural sciences with physics-based and data-driven measures” resulting from a collaboration between Illia Horenko from University of Lugano in Switzerland, Susanne Gerber from Medical Center of the Johannes Gutenberg University Mainz, postdoctoral researcher Davi R. Rodrigues and Twist Group Leader Karin Everschor-Sitte both affiliated with the Johannes Gutenberg-University Mainz, has been published in iScience.
In this paper, they discuss two state-of-the-art machine learning data-driven tools latent entropy and latent dimension to analyse latent effects in data to glean much more information from an experimental data set to study matter. They explain the applicability of those techniques in natural science to reveal so far unobserved features on several examples like a gradient in a magnetic measurement or a latent network of glymphatic channels from the mouse brain microscopy data.
Detailed information:
A deeper look into natural sciences with physics-based and data-driven measures
Davi R. Rodrigues, Karin Everschor-Sitte, Susanne Gerber and Illia Horenko
iScience 24, 3 (2021)
01.03.2021Journal of Magnetism and Magnetic Materials Publication
A paper on “The promise of spintronics for unconventional computing” by Giovanni Finocchio, Massimiliano Di Ventra, Kerem Y. Camsari, Karin Everschor-Sitte, Pedram Khalili Amiri and Zhongming Zeng, has been published in Journal of Magnetism and Magnetic Materials.
In this paper, they discuss how spintronics primarily focusing on magnetic tunnel junctions may aid in the realization of efficient devices which provide solutions to complex problems with reduced time, power consumption and/or less device footprint than is currently possible with standard approaches. They provide a perspective on how these devices can impact the development of three unconventional computing paradigms, namely, reservoir computing, probabilistic computing and memcomputing.
Detailed information:
The promise of spintronics for unconventional computing
Giovanni Finocchio, Massimiliano Di Ventra, Kerem Y. Camsari, Karin Everschor-Sitte, Pedram Khalili Amiri and Zhongming Zeng
Journal of Magnetism and Magnetic Materials 521, 167506 (2021)
19.01.2021BMC Genomics Publication
A paper on “Reliability of genomic variants across different next-generation sequencing platforms and bioinformatic processing pipelines” has been published in BMC Genomics.
In this paper, they provide empirical evidence of systematic heterogeneity in single nucleotide variant calls between alternative experimental and data analysis setups based on Next Generation Sequencing.
Detailed information:
Reliability of genomic variants across different next-generation sequencing platforms and bioinformatic processing pipelines
Stephan Weißbach, Stanislav Sys, Charlotte Hewel, Hristo Todorov, Susann Schweiger, Jennifer Winter, Markus Pfenninger, Ali Torkamani, Doug Evans, Joachim Burger, Karin Everschor-Sitte, Helen Louise May-Simera and Susanne Gerber
BMC Genomics 22, 62 (2021)
01.01.2021Sarah Jenkins joins TWIST Group
Dr. Sarah Jenkins joins the TWIST Group as a Postdoctoral Researcher.
We are looking forward to a successful collaboration.
Contact information:
Dr. Sarah Jenkins
Office: 2412/ 01-533
Phone: +49 6131 39 24016
Email: sarah.jenkins@uni-due.de
01.01.2021Kyra Klos joins TWIST & Group of Friederike Schmid
Kyra Klos joins the TWIST Group joint with the Group of Friederike Schmid as a PhD Candidate.
We are looking forward to a successful collaboration.
Contact information:
Kyra Klos
Email: kklos@students.uni-mainz.de