Magnetic Skyrmions for Future Nanospintronic Devices

Risultati finali

Report on nucleation mechanisms, influence of pinning and interaction between skyrmions
Report on role of defect and temperature on the skyrmion stabilization
Report on ab-initio calculation of spin-torque for single skyrmions in MML systems
Report on optimized conditions for an efficient skyrmion nucleation
Report on imaging of individual skyrmions of MML systems made by different techniques
Report on spin torque driven skyrmion propagation

Project website

Pubblicazioni

Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmions at room temperature

Autori: C. Moreau-Luchaire, C. Moutaﬁs, N. Reyren, J. Sampaio, C. A. F. Vaz, N. Van Horne, K. Bouzehouane, K. Garcia, C. Deranlot, P. Warnicke, P. Wohlhüter, J.-M. George, M. Weigand, J. Raabe, V. Cros, A. Fert
Pubblicato in: Nature Nanotechnology, Numero 11/5, 2016, Pagina/e 444-448, ISSN 1748-3387
Editore: Nature Publishing Group
DOI: 10.1038/nnano.2015.313

Symmetry breaking in spin spirals and skyrmions by in-plane and canted magnetic fields

Autori: L Schmidt, J Hagemeister, P-J Hsu, A Kubetzka, K von Bergmann, R Wiesendanger
Pubblicato in: New Journal of Physics, Numero 18/7, 2016, Pagina/e 075007, ISSN 1367-2630
Editore: Institute of Physics Publishing
DOI: 10.1088/1367-2630/18/7/075007

Perpendicular reading of single confined magnetic skyrmions

Autori: Dax M. Crum, Mohammed Bouhassoune, Juba Bouaziz, Benedikt Schweflinghaus, Stefan Blügel, Samir Lounis
Pubblicato in: Nature Communications, Numero 6, 2015, Pagina/e 8541, ISSN 2041-1723
Editore: Nature Publishing Group
DOI: 10.1038/ncomms9541

Pinning and movement of individual nanoscale magnetic skyrmions via defects

Autori: Christian Hanneken, André Kubetzka, Kirsten von Bergmann, Roland Wiesendanger
Pubblicato in: New Journal of Physics, Numero 18/5, 2016, Pagina/e 055009, ISSN 1367-2630
Editore: Institute of Physics Publishing
DOI: 10.1088/1367-2630/18/5/055009

Minimal radius of magnetic skyrmions: statics and dynamics

Autori: A Siemens, Y Zhang, J Hagemeister, E Y Vedmedenko, R Wiesendanger
Pubblicato in: New Journal of Physics, Numero 18/4, 2016, Pagina/e 045021, ISSN 1367-2630
Editore: Institute of Physics Publishing
DOI: 10.1088/1367-2630/18/4/045021

Engineering skyrmions in transition-metal multilayers for spintronics

Autori: B. Dupé, G. Bihlmayer, M. Böttcher, S. Blügel, S. Heinze
Pubblicato in: Nature Communications, Numero 7, 2016, Pagina/e 11779, ISSN 2041-1723
Editore: Nature Publishing Group
DOI: 10.1038/ncomms11779

How to reveal metastable skyrmionic spin structures by spin-polarized scanning tunneling microscopy

Autori: B Dupé, C N Kruse, T Dornheim, S Heinze
Pubblicato in: New Journal of Physics, Numero 18/5, 2016, Pagina/e 055015, ISSN 1367-2630
Editore: Institute of Physics Publishing
DOI: 10.1088/1367-2630/18/5/055015

Interlayer Exchange Coupling: A General Scheme Turning Chiral Magnets into Magnetic Multilayers Carrying Atomic-Scale Skyrmions

Autori: Ashis Kumar Nandy, Nikolai S. Kiselev, Stefan Blügel
Pubblicato in: Physical Review Letters, Numero 116/17, 2016, ISSN 0031-9007
Editore: American Physical Society
DOI: 10.1103/PhysRevLett.116.177202

Chirality-driven orbital magnetic moments as a new probe for topological magnetic structures

Autori: Manuel dos Santos Dias, Juba Bouaziz, Mohammed Bouhassoune, Stefan Blügel, Samir Lounis
Pubblicato in: Nature Communications, Numero 7, 2016, Pagina/e 13613, ISSN 2041-1723
Editore: Nature Publishing Group
DOI: 10.1038/ncomms13613

Spin-orbit torques and spin accumulation in FePt/Pt and Co/Cu thin films from first principles: The role of impurities

Autori: Guillaume Géranton, Bernd Zimmermann, Nguyen H. Long, Phivos Mavropoulos, Stefan Blügel, Frank Freimuth, Yuriy Mokrousov
Pubblicato in: Physical Review B, Numero 93/22, 2016, ISSN 2469-9950
Editore: APS
DOI: 10.1103/PhysRevB.93.224420

Role of Dzyaloshinskii-Moriya interaction for magnetism in transition-metal chains at Pt step edges

Autori: B. Schweflinghaus, B. Zimmermann, M. Heide, G. Bihlmayer, S. Blügel
Pubblicato in: Physical Review B, Numero 94/2, 2016, ISSN 2469-9950
Editore: APS
DOI: 10.1103/PhysRevB.94.024403

Nanoscale magnetic skyrmions in metallic films and multilayers: a new twist for spintronics

Autori: Roland Wiesendanger
Pubblicato in: Nature Reviews Materials, Numero 1/7, 2016, ISSN 2058-8437
Editore: Nature Publishing Group
DOI: 10.1038/natrevmats.2016.44

Skyrmions at the Edge: Confinement Effects in Fe / Ir ( 111 )

Autori: Julian Hagemeister, Davide Iaia, Elena Y. Vedmedenko, Kirsten von Bergmann, André Kubetzka, Roland Wiesendanger
Pubblicato in: Physical Review Letters, Numero 117/20, 2016, ISSN 0031-9007
Editore: American Physical Society
DOI: 10.1103/PhysRevLett.117.207202

Pattern formation in skyrmionic materials with anisotropic environments

Autori: Julian Hagemeister, Elena Y. Vedmedenko, Roland Wiesendanger
Pubblicato in: Physical Review B, Numero 94/10, 2016, ISSN 2469-9950
Editore: APS
DOI: 10.1103/PhysRevB.94.104434

Antiskyrmions stabilized at interfaces by anisotropic Dzyaloshinskii-Moriya interactions

Autori: Markus Hoffmann, Bernd Zimmermann, Gideon P. Müller, Daniel Schürhoff, Nikolai S. Kiselev, Christof Melcher, Stefan Blügel
Pubblicato in: Nature Communications, Numero 8/1, 2017, ISSN 2041-1723
Editore: Nature Publishing Group
DOI: 10.1038/s41467-017-00313-0

Topological spin Hall effect in antiferromagnetic skyrmions

Autori: Patrick M. Buhl, Frank Freimuth, Stefan Blügel, Yuriy Mokrousov
Pubblicato in: physica status solidi (RRL) - Rapid Research Letters, Numero 11/4, 2017, Pagina/e 1700007, ISSN 1862-6254
Editore: Wiley - VCH Verlag GmbH & CO. KGaA
DOI: 10.1002/pssr.201700007

Tailoring noncollinear magnetism by misfit dislocation lines

Autori: Aurore Finco, Pin-Jui Hsu, André Kubetzka, Kirsten von Bergmann, Roland Wiesendanger
Pubblicato in: Physical Review B, Numero 94/21, 2016, ISSN 2469-9950
Editore: APS
DOI: 10.1103/PhysRevB.94.214402

Mixed Weyl semimetals and low-dissipation magnetization control in insulators by spin–orbit torques

Autori: Jan-Philipp Hanke, Frank Freimuth, Chengwang Niu, Stefan Blügel, Yuriy Mokrousov
Pubblicato in: Nature Communications, Numero 8/1, 2017, ISSN 2041-1723
Editore: Nature Publishing Group
DOI: 10.1038/s41467-017-01138-7

Probing the Nano-Skyrmion Lattice on Fe/Ir(111) with Magnetic Exchange Force Microscopy

Autori: Josef Grenz, Arne Köhler, Alexander Schwarz, Roland Wiesendanger
Pubblicato in: Physical Review Letters, Numero 119/4, 2017, ISSN 0031-9007
Editore: American Physical Society
DOI: 10.1103/PhysRevLett.119.047205

Enhanced skyrmion stability due to exchange frustration

Autori: S. von Malottki, B. Dupé, P. F. Bessarab, A. Delin, S. Heinze
Pubblicato in: Scientific Reports, Numero 7/1, 2017, ISSN 2045-2322
Editore: Nature Publishing Group
DOI: 10.1038/s41598-017-12525-x

Temperature-Induced Increase of Spin Spiral Periods

Autori: Aurore Finco, Levente Rózsa, Pin-Jui Hsu, André Kubetzka, Elena Vedmedenko, Kirsten von Bergmann, Roland Wiesendanger
Pubblicato in: Physical Review Letters, Numero 119/3, 2017, ISSN 0031-9007
Editore: American Physical Society
DOI: 10.1103/PhysRevLett.119.037202

Prototypical topological orbital ferromagnet γ-FeMn

Autori: Jan-Philipp Hanke, Frank Freimuth, Stefan Blügel, Yuriy Mokrousov
Pubblicato in: Scientific Reports, Numero 7/1, 2017, ISSN 2045-2322
Editore: Nature Publishing Group
DOI: 10.1038/srep41078

Current-driven skyrmion dynamics in disordered films

Autori: Joo-Von Kim, Myoung-Woo Yoo
Pubblicato in: Applied Physics Letters, Numero 110/13, 2017, Pagina/e 132404, ISSN 0003-6951
Editore: American Institute of Physics
DOI: 10.1063/1.4979316

Electric-field-driven switching of individual magnetic skyrmions

Autori: Pin-Jui Hsu, André Kubetzka, Aurore Finco, Niklas Romming, Kirsten von Bergmann, Roland Wiesendanger
Pubblicato in: Nature Nanotechnology, Numero 12/2, 2016, Pagina/e 123-126, ISSN 1748-3387
Editore: Nature Publishing Group
DOI: 10.1038/nnano.2016.234

Current-driven dynamics and inhibition of the skyrmion Hall effect of ferrimagnetic skyrmions in GdFeCo films

Autori: Seonghoon Woo, Kyung Mee Song, Xichao Zhang, Yan Zhou, Motohiko Ezawa, Xiaoxi Liu, S. Finizio, J. Raabe, Nyun Jong Lee, Sang-Il Kim, Seung-Young Park, Younghak Kim, Jae-Young Kim, Dongjoon Lee, OukJae Lee, Jun Woo Choi, Byoung-Chul Min, Hyun Cheol Koo, Joonyeon Chang
Pubblicato in: Nature Communications, Numero 9/1, 2018, ISSN 2041-1723
Editore: Nature Publishing Group
DOI: 10.1038/s41467-018-03378-7

Magnetic skyrmions: advances in physics and potential applications

Autori: Albert Fert, Nicolas Reyren, Vincent Cros
Pubblicato in: Nature Reviews Materials, Numero 2/7, 2017, Pagina/e 17031, ISSN 2058-8437
Editore: Nature Publishing Group
DOI: 10.1038/natrevmats.2017.31

Dzyaloshinskii-Moriya interaction at an antiferromagnetic interface: First-principles study of Fe/Ir bilayers on Rh(001)

Autori: Sebastian Meyer, Bertrand Dupé, Paolo Ferriani, Stefan Heinze
Pubblicato in: Physical Review B, Numero 96/9, 2017, ISSN 2469-9950
Editore: APS
DOI: 10.1103/PhysRevB.96.094408

Impact of the skyrmion spin texture on magnetoresistance

Autori: André Kubetzka, Christian Hanneken, Roland Wiesendanger, Kirsten von Bergmann
Pubblicato in: Physical Review B, Numero 95/10, 2017, ISSN 2469-9950
Editore: APS
DOI: 10.1103/PhysRevB.95.104433

Universality of defect-skyrmion interaction profiles

Autori: Imara Lima Fernandes, Juba Bouaziz, Stefan Blügel, Samir Lounis
Pubblicato in: Nature Communications, Numero 9/1, 2018, ISSN 2041-1723
Editore: Nature Publishing Group
DOI: 10.1038/s41467-018-06827-5

Engineering chiral and topological orbital magnetism of domain walls and skyrmions

Autori: Fabian R. Lux, Frank Freimuth, Stefan Blügel, Yuriy Mokrousov
Pubblicato in: Communications Physics, Numero 1/1, 2018, ISSN 2399-3650
Editore: Nature Publishing Group
DOI: 10.1038/s42005-018-0055-y

Chirality in Magnetic Multilayers Probed by the Symmetry and the Amplitude of Dichroism in X-Ray Resonant Magnetic Scattering

Autori: Jean-Yves Chauleau, William Legrand, Nicolas Reyren, Davide Maccariello, Sophie Collin, Horia Popescu, Karim Bouzehouane, Vincent Cros, Nicolas Jaouen, Albert Fert
Pubblicato in: Physical Review Letters, Numero 120/3, 2018, ISSN 0031-9007
Editore: American Physical Society
DOI: 10.1103/PhysRevLett.120.037202

Electrical detection of single magnetic skyrmions in metallic multilayers at room temperature

Autori: Davide Maccariello, William Legrand, Nicolas Reyren, Karin Garcia, Karim Bouzehouane, Sophie Collin, Vincent Cros, Albert Fert
Pubblicato in: Nature Nanotechnology, Numero 13/3, 2018, Pagina/e 233-237, ISSN 1748-3387
Editore: Nature Publishing Group
DOI: 10.1038/s41565-017-0044-4

First-principles investigation of chiral magnetic properties in multilayers: Rh/Co/Pt and Pd/Co/Pt

Autori: Hongying Jia, Bernd Zimmermann, Stefan Blügel
Pubblicato in: Physical Review B, Numero 98/14, 2018, ISSN 2469-9950
Editore: APS
DOI: 10.1103/PhysRevB.98.144427

Controlled creation and stability of k π skyrmions on a discrete lattice

Autori: Julian Hagemeister, Ansgar Siemens, Levente Rózsa, Elena Y. Vedmedenko, Roland Wiesendanger
Pubblicato in: Physical Review B, Numero 97/17, 2018, ISSN 2469-9950
Editore: APS
DOI: 10.1103/PhysRevB.97.174436

Effective damping enhancement in noncollinear spin structures

Autori: Levente Rózsa, Julian Hagemeister, Elena Y. Vedmedenko, Roland Wiesendanger
Pubblicato in: Physical Review B, Numero 98/10, 2018, ISSN 2469-9950
Editore: APS
DOI: 10.1103/PhysRevB.98.100404

Lifetime of racetrack skyrmions

Autori: Pavel F. Bessarab, Gideon P. Müller, Igor S. Lobanov, Filipp N. Rybakov, Nikolai S. Kiselev, Hannes Jónsson, Valery M. Uzdin, Stefan Blügel, Lars Bergqvist, Anna Delin
Pubblicato in: Scientific Reports, Numero 8/1, 2018, ISSN 2045-2322
Editore: Nature Publishing Group
DOI: 10.1038/s41598-018-21623-3

Hybrid chiral domain walls and skyrmions in magnetic multilayers

Autori: William Legrand, Jean-Yves Chauleau, Davide Maccariello, Nicolas Reyren, Sophie Collin, Karim Bouzehouane, Nicolas Jaouen, Vincent Cros, Albert Fert
Pubblicato in: Science Advances, Numero 4/7, 2018, Pagina/e eaat0415, ISSN 2375-2548
Editore: AAAS
DOI: 10.1126/sciadv.aat0415

Trochoidal motion and pair generation in skyrmion and antiskyrmion dynamics under spin–orbit torques

Autori: Ulrike Ritzmann, Stephan von Malottki, Joo-Von Kim, Stefan Heinze, Jairo Sinova, Bertrand Dupé
Pubblicato in: Nature Electronics, Numero 1/8, 2018, Pagina/e 451-457, ISSN 2520-1131
Editore: Nature Publishing Group
DOI: 10.1038/s41928-018-0114-0

Inducing skyrmions in ultrathin Fe films by hydrogen exposure

Autori: Pin-Jui Hsu, Levente Rózsa, Aurore Finco, Lorenz Schmidt, Krisztián Palotás, Elena Vedmedenko, László Udvardi, László Szunyogh, André Kubetzka, Kirsten von Bergmann, Roland Wiesendanger
Pubblicato in: Nature Communications, Numero 9/1, 2018, ISSN 2041-1723
Editore: Nature Publishing Group
DOI: 10.1038/s41467-018-04015-z

Room-Temperature Current-Induced Generation and Motion of sub-100 nm Skyrmions

Autori: William Legrand, Davide Maccariello, Nicolas Reyren, Karin Garcia, Christoforos Moutafis, Constance Moreau-Luchaire, Sophie Collin, Karim Bouzehouane, Vincent Cros, Albert Fert
Pubblicato in: Nano Letters, Numero 17/4, 2017, Pagina/e 2703-2712, ISSN 1530-6984
Editore: American Chemical Society
DOI: 10.1021/acs.nanolett.7b00649

Pinning and hysteresis in the field dependent diameter evolution of skyrmions in Pt/Co/Ir superlattice stacks

Autori: K. Zeissler, M. Mruczkiewicz, S. Finizio, J. Raabe, P. M. Shepley, A. V. Sadovnikov, S. A. Nikitov, K. Fallon, S. McFadzean, S. McVitie, T. A. Moore, G. Burnell, C. H. Marrows
Pubblicato in: Scientific Reports, Numero 7/1, 2017, ISSN 2045-2322
Editore: Nature Publishing Group
DOI: 10.1038/s41598-017-15262-3

Control of the gyration dynamics of magnetic vortices by the magnetoelastic effect

Autori: S. Finizio, S. Wintz, E. Kirk, A. K. Suszka, S. Gliga, P. Wohlhüter, K. Zeissler, J. Raabe
Pubblicato in: Physical Review B, Numero 96/5, 2017, ISSN 2469-9950
Editore: APS
DOI: 10.1103/PhysRevB.96.054438

First-principles prediction of sub-10-nm skyrmions in Pd/Fe bilayers on Rh(111)

Autori: Soumyajyoti Haldar, Stephan von Malottki, Sebastian Meyer, Pavel F. Bessarab, Stefan Heinze
Pubblicato in: Physical Review B, Numero 98/6, 2018, ISSN 2469-9950
Editore: APS
DOI: 10.1103/PhysRevB.98.060413

A skyrmion-based spin-torque nano-oscillator

Autori: F Garcia-Sanchez, J Sampaio, N Reyren, V Cros, J-V Kim
Pubblicato in: New Journal of Physics, Numero 18/7, 2016, Pagina/e 075011, ISSN 1367-2630
Editore: Institute of Physics Publishing
DOI: 10.1088/1367-2630/18/7/075011

Domain walls and Dzyaloshinskii-Moriya interaction in epitaxial Co/Ir(111) and Pt/Co/Ir(111)

Autori: Marco Perini, Sebastian Meyer, Bertrand Dupé, Stephan von Malottki, André Kubetzka, Kirsten von Bergmann, Roland Wiesendanger, Stefan Heinze
Pubblicato in: Physical Review B, Numero 97/18, 2018, ISSN 2469-9950
Editore: APS
DOI: 10.1103/PhysRevB.97.184425

Thermal stability of metastable magnetic skyrmions: Entropic narrowing and significance of internal eigenmodes

Autori: L. Desplat, D. Suess, J-V. Kim, R. L. Stamps
Pubblicato in: Physical Review B, Numero 98/13, 2018, ISSN 2469-9950
Editore: APS
DOI: 10.1103/PhysRevB.98.134407

Discrete Hall resistivity contribution from Néel skyrmions in multilayer nanodiscs

Autori: Katharina Zeissler, Simone Finizio, Kowsar Shahbazi, Jamie Massey, Fatma Al Ma’Mari, David M. Bracher, Armin Kleibert, Mark C. Rosamond, Edmund H. Linfield, Thomas A. Moore, Jörg Raabe, Gavin Burnell, Christopher H. Marrows
Pubblicato in: Nature Nanotechnology, 2018, ISSN 1748-3387
Editore: Nature Publishing Group
DOI: 10.1038/s41565-018-0268-y

Helical magnetic structure and the anomalous and topological Hall effects in epitaxial B20 Fe 1 − y Co y

Autori: Charles S. Spencer, Jacob Gayles, Nicholas A. Porter, Satoshi Sugimoto, Zabeada Aslam, Christian J. Kinane, Timothy R. Charlton, Frank Freimuth, Stanislav Chadov, Sean Langridge, Jairo Sinova, Claudia Felser, Stefan Blügel, Yuriy Mokrousov, Christopher H. Marrows
Pubblicato in: Physical Review B, Numero 97/21, 2018, ISSN 2469-9950
Editore: APS
DOI: 10.1103/PhysRevB.97.214406

Skyrmion Gas Manipulation for Probabilistic Computing

Autori: D. Pinna, F. Abreu Araujo, J.-V. Kim, V. Cros, D. Querlioz, P. Bessiere, J. Droulez, J. Grollier
Pubblicato in: Physical Review Applied, Numero 9/6, 2018, ISSN 2331-7019
Editore: APS
DOI: 10.1103/PhysRevApplied.9.064018

Competition of Dzyaloshinskii-Moriya and Higher-Order Exchange Interactions in Rh / Fe Atomic Bilayers on Ir(111)

Autori: Niklas Romming, Henning Pralow, André Kubetzka, Markus Hoffmann, Stephan von Malottki, Sebastian Meyer, Bertrand Dupé, Roland Wiesendanger, Kirsten von Bergmann, Stefan Heinze
Pubblicato in: Physical Review Letters, Numero 120/20, 2018, ISSN 0031-9007
Editore: American Physical Society
DOI: 10.1103/PhysRevLett.120.207201

Current-driven skyrmion expulsion from magnetic nanostrips

Autori: Myoung-Woo Yoo, Vincent Cros, Joo-Von Kim
Pubblicato in: Physical Review B, Numero 95/18, 2017, ISSN 2469-9950
Editore: APS
DOI: 10.1103/PhysRevB.95.184423

A transmission electron microscope study of Néel skyrmion magnetic textures in multilayer thin film systems with large interfacial chiral interaction

Autori: S. McVitie, S. Hughes, K. Fallon, S. McFadzean, D. McGrouther, M. Krajnak, W. Legrand, D. Maccariello, S. Collin, K. Garcia, N. Reyren, V. Cros, A. Fert, K. Zeissler, C. H. Marrows
Pubblicato in: Scientific Reports, Numero 8/1, 2018, ISSN 2045-2322
Editore: Nature Publishing Group
DOI: 10.1038/s41598-018-23799-0

In-situ Electrical Transport Measurements Combined with Scanning Transmission X-ray Microscopy

Autori: S. Finizio, K. Zeissler, G. Burnell, C.H. Marrows, J. Raabe
Pubblicato in: Microscopy and Microanalysis, Numero 24/S2, 2018, Pagina/e 78-79, ISSN 1431-9276
Editore: Cambridge University Press
DOI: 10.1017/S1431927618012771

Unexpected field-induced dynamics in magnetostrictive microstructured elements under isotropic strain

Autori: Simone Finizio, Sebastian Wintz, Sebastian Gliga, Eugenie Kirk, Anna Kinga Suszka, Phillip Wohlhüter, Katharina Zeissler, Jörg Raabe
Pubblicato in: Journal of Physics: Condensed Matter, Numero 30/31, 2018, Pagina/e 314001, ISSN 0953-8984
Editore: Institute of Physics Publishing
DOI: 10.1088/1361-648X/aacddd

B – T phase diagram of Pd/Fe/Ir(111) computed with parallel tempering Monte Carlo

Autori: M Böttcher, S Heinze, S Egorov, J Sinova, B Dupé
Pubblicato in: New Journal of Physics, Numero 20/10, 2018, Pagina/e 103014, ISSN 1367-2630
Editore: Institute of Physics Publishing
DOI: 10.1088/1367-2630/aae282

Higher-dimensional Wannier Interpolation for the Modern Theory of the Dzyaloshinskii–Moriya Interaction: Application to Co-based Trilayers

Autori: Jan-Philipp Hanke, Frank Freimuth, Stefan Blügel, Yuriy Mokrousov
Pubblicato in: Journal of the Physical Society of Japan, Numero 87/4, 2018, Pagina/e 041010, ISSN 0031-9015
Editore: Institute of Pure and Applied Physics
DOI: 10.7566/JPSJ.87.041010

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Device for generating a random electrical signal and associated architectures

Numero candidatura/pubblicazione: FR 1600791
Data: 2016-05-18

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