Journal ArticleDOI
Near room-temperature formation of a skyrmion crystal in thin-films of the helimagnet FeGe
Xiuzhen Yu,Naoya Kanazawa,Yoshinori Onose,Koji Kimoto,Weizhu Zhang,Shintaro Ishiwata,Yoshio Matsui,Yoshinori Tokura +7 more
TLDR
The formation of SkX close to room temperature in thin-films of the helimagnet FeGe with magnetic chirality inversion of the SkX across lattice twin boundaries will pave a new path to designing quantum-effect devices based on the controllable skyrmion dynamics.Abstract:
Skyrmions are vortex-like arrangements of spin magnetic moments, which so far have been observed in only a few compounds, and only at low temperatures. The discovery that skyrmions can be stabilized by thin magnetic films close to room temperature promises their use in spintronic devices.read more
Citations
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Journal ArticleDOI
Topological properties and dynamics of magnetic skyrmions
TL;DR: From this description, potential applications of skyrmions as information carriers in magnetic information storage and processing devices are envisaged.
Journal ArticleDOI
Skyrmions on the track
TL;DR: Magnetic skyrmions are nanoscale spin configurations that hold promise as information carriers in ultradense memory and logic devices owing to the extremely low spin-polarized currents needed to move them.
Journal ArticleDOI
Spontaneous atomic-scale magnetic skyrmion lattice in two dimensions
Stefan Heinze,Kirsten von Bergmann,Matthias Menzel,Jens Brede,André Kubetzka,Roland Wiesendanger,Gustav Bihlmayer,Stefan Blügel +7 more
TL;DR: In this article, a two-dimensional square lattice of skyrmions on the atomic length scale was described as the magnetic ground state of a hexagonal Fe film of one-atomic-layer thickness on the Ir(111) surface.
Journal ArticleDOI
Observation of room-temperature magnetic skyrmions and their current-driven dynamics in ultrathin metallic ferromagnets
Seonghoon Woo,Kai Litzius,Benjamin Krüger,Mi-Young Im,Mi-Young Im,Lucas Caretta,K. Richter,Maxwell Mann,Andrea Krone,Robert M. Reeve,Markus Weigand,Parnika Agrawal,Ivan Lemesh,Mohamad-Assaad Mawass,Mohamad-Assaad Mawass,Peter Fischer,Peter Fischer,Mathias Kläui,Geoffrey S. D. Beach +18 more
TL;DR: In this paper, stable magnetic skyrmions at room temperature in ultrathin transition metal ferromagnets with magnetic transmission soft X-ray microscopy were observed and demonstrated.
Journal ArticleDOI
Writing and deleting single magnetic skyrmions.
Niklas Romming,Christian Hanneken,Matthias Menzel,Jessica Bickel,Boris Wolter,Kirsten von Bergmann,André Kubetzka,Roland Wiesendanger +7 more
TL;DR: This work reports on an ultrathin magnetic film in which individual skyrmions can be written and deleted in a controlled fashion with local spin-polarized currents from a scanning tunneling microscope, demonstrating the feasibility of using spin- polarized tunnel currents for the controlled manipulation of individual sk Kyrmions.
References
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Journal ArticleDOI
Anisotropic Superexchange Interaction and Weak Ferromagnetism
TL;DR: In this paper, the Anderson theory of superexchange was extended to include spin-orbit coupling and the antisymmetric spin coupling suggested by Dzialoshinski from purely symmetry grounds and the symmetric pseudodipolar interaction were derived.
Journal ArticleDOI
A thermodynamic theory of “weak” ferromagnetism of antiferromagnetics
TL;DR: In this paper, a thermodynamic theory of weak ferromagnetism of α-Fe 2 O 3, MnCO 3 and CoCO 3 is developed on the basis of landau's theory of phase transitions of the second kind.
Book
Electron Energy-Loss Spectroscopy in the Electron Microscope
Ray F. Egerton,Dale E. Newbury +1 more
TL;DR: In this article, the authors present an overview of the basic principles of energy-loss spectroscopy, including the use of the Wien filter, and the analysis of the inner-shell of the detector.
Journal ArticleDOI
Skyrmion Lattice in a Chiral Magnet
Sebastian Mühlbauer,B. Binz,F. Jonietz,Christian Pfleiderer,Achim Rosch,A. Neubauer,Robert Georgii,Peter Böni +7 more
TL;DR: This study experimentally establishes magnetic materials lacking inversion symmetry as an arena for new forms of crystalline order composed of topologically stable spin states in the chiral itinerant-electron magnet MnSi.
Journal ArticleDOI
Real-space observation of a two-dimensional skyrmion crystal
X. Z. Yu,Yoshinori Onose,Naoya Kanazawa,Jin-Hong Park,Jung Hoon Han,Yoshio Matsui,Naoto Nagaosa,Yoshinori Tokura +7 more
TL;DR: Real-space imaging of a two-dimensional skyrmion lattice in a thin film of Fe0.5Co 0.5Si using Lorentz transmission electron microscopy reveals a controlled nanometre-scale spin topology, which may be useful in observing unconventional magneto-transport effects.