Results 51 to 60 of about 5,330 (203)
Topological energy barrier for skyrmion lattice formation in MnSi
, 2020 We report the direct measurement of the topological skyrmion energy barrier through a hysteresis of the skyrmion lattice in the chiral magnet MnSi. Measurements were made using small-angle neutron scattering with a custom-built resistive coil to allow ...
Bauer, E. D. +10 more
core +1 more source
Skyrmion lattice in centrosymmetric magnets with local Dzyaloshinsky–Moriya interaction
Materials Today QuantumIt is common for the local inversion symmetry to break in crystals, even though the whole crystal has global inversion symmetry. This local inversion symmetry breaking allows for a local Dzyaloshinsky–Moriya interaction (DMI) in magnetic crystals.
Shi-Zeng Lin
doaj +1 more source
Magnetoelectric Cavity Magnonics in Skyrmion Crystals
PRX Quantum, 2022 19 pages, 17 figures.
Tomoki Hirosawa +3 more
openaire +6 more sources
Skyrmion Crystal in Bilinear–Biquadratic–Bicubic Model on a Centrosymmetric Triangular Lattice
Condensed MatterWe numerically investigate the effect of multi-spin interactions on the stability of skyrmion crystals and other multiple-Q magnetic states, with a particular emphasis on the momentum-resolved bicubic interaction. By performing simulated annealing for an
Satoru Hayami
doaj +1 more source
Evidence for Skyrmion Crystallization from NMR Relaxation Experiments [PDF]
Physical Review Letters, 2005 A resistively detected NMR technique was used to probe the two-dimensional electron gas in a GaAs/AlGaAs quantum well. The spin-lattice relaxation rate $(1/T_{1})$ was extracted at near complete filling of the first Landau level by electrons. The nuclear spin of $^{75}$As is found to relax much more efficiently with $T\to 0$ and when a well developed ...
Gervais, G. +8 more
openaire +3 more sources
Centrosymmetric Double-Q Skyrmion Crystals Under Uniaxial Distortion and Bond-Dependent Anisotropy
CrystalsWe theoretically investigate the stability of double-Q square skyrmion crystals under uniaxial distortion. Using an effective spin model with frustrated exchange interactions and bond-dependent anisotropy in momentum space, we construct the low ...
Satoru Hayami
doaj +1 more source
Precipitating Ordered Skyrmion Lattices from Helical Spaghetti
, 2018 Magnetic skyrmions have been the focus of intense research due to their potential applications in ultra-high density data and logic technologies, as well as for the unique physics arising from their antisymmetric exchange term and topological protections.
Borchers, Julie A. +10 more
core +1 more source
MagnetismWe report our numerical results on the stability of the skyrmion crystal phase in an external magnetic field for both in-plane and out-of-plane directions in a centrosymmetric host. We analyze a spin model with the two-spin symmetric anisotropic exchange
Satoru Hayami
doaj +1 more source
Collective dynamical skyrmion excitations in a magnonic crystal [PDF]
Physical Review B, 2016 We investigate theoretically skyrmion magnonic crystal, i.e., the dynamics of the magnetization in a chain of the ferromagnetic nanodots being in skyrmion magnetic configuration. We show that collective excitations are possible to be observed in the structure. We present the dispersion relation of the coupled skyrmions. It exhibit a periodical property
Mruczkiewicz, M. +3 more
openaire +2 more sources
Current Switching of Topological Spin Chirality in the van der Waals Antiferromagnet Co1/3TaS2
Advanced Materials, EarlyView.Spin chirality plays a central role in quantum magnetism, governing spin winding and generating real‐space Berry phases. We propose the intriguing concept of current‐switching spin chirality and demonstrate it via unconventional intrinsic self‐spin‐orbit‐torque in pristine Co1/3TaS2, purely by electrical current and with high energy efficiency.
Kai‐Xuan Zhang +3 more
wiley +1 more source