Colossal Spin Transfer Torque Effect on Skyrmion along the Edge

被引：114

作者：

Iwasaki, Junichi ^{[1
]}

Koshibae, Wataru ^{[2
]}

Nagaosa, Naoto ^{[1
,2
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

[2] RIKEN Ctr Emergent Matter Sci CEMS, Wako, Saitama 3510198, Japan

来源：

NANO LETTERS | 2014年 / 14卷 / 08期

基金：

日本科学技术振兴机构;

关键词：

Magnetic skyrmion; spintronics; micromagnetic simulation; magnetization dynamics; MAGNETIC DOMAIN-WALL; CHIRAL MAGNET; DYNAMICS; MOTION; FERROMAGNETS; LATTICE; STATE;

D O I：

10.1021/nl501379k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We study by the micromagnetic simulations the skyrmion motion along the edge driven by the current transverse to it. We found that (i) the velocity is enhanced by the factor of similar to 1/alpha (alpha: the Gilbert damping) with the maximum value determined only by the confining force from the edge, (ii) the inertia appear due to the confining potential with the coordinate perpendicular to the edge playing the role of the kinetic momentum, and (iii) the collision between the two skyrmions is almost elastic without causing any internal distortions.

引用

页码：4432 / 4437

页数：6

共 25 条

[1]

BOGDANOV AN, 1989, ZH EKSP TEOR FIZ+, V95, P178

[2] Dynamics of a vortex domain wall in a magnetic nanostrip: Application of the collective-coordinate approach [J].

Clarke, D. J. ;

Tretiakov, O. A. ;

Chern, G. -W. ;

Bazaliy, Ya. B. ;

Tchernyshyov, O. .

PHYSICAL REVIEW B, 2008, 78 (13)

[3] Rotating skyrmion lattices by spin torques and field or temperature gradients [J].

Everschor, Karin ;

Garst, Markus ;

Binz, Benedikt ;

Jonietz, Florian ;

Muehlbauer, Sebastian ;

Pfleiderer, Christian ;

Rosch, Achim .

PHYSICAL REVIEW B, 2012, 86 (05)

[4] Langevin-dynamics study of the dynamical properties of small magnetic particles [J].

García-Palacios, JL ;

Lázaro, FJ .

PHYSICAL REVIEW B, 1998, 58 (22) :14937-14958

[5]

Heinze S, 2011, NAT PHYS, V7, P713, DOI [10.1038/nphys2045, 10.1038/NPHYS2045]

[6] Current-induced skyrmion dynamics in constricted geometries [J].

Iwasaki, Junichi ;

Mochizuki, Masahito ;

Nagaosa, Naoto .

NATURE NANOTECHNOLOGY, 2013, 8 (10) :742-747

[7] Universal current-velocity relation of skyrmion motion in chiral magnets [J].

Iwasaki, Junichi ;

Mochizuki, Masahito ;

Nagaosa, Naoto .

NATURE COMMUNICATIONS, 2013, 4

[8] Spin Transfer Torques in MnSi at Ultralow Current Densities [J].

Jonietz, F. ;

Muehlbauer, S. ;

Pfleiderer, C. ;

Neubauer, A. ;

Muenzer, W. ;

Bauer, A. ;

Adams, T. ;

Georgii, R. ;

Boeni, P. ;

Duine, R. A. ;

Everschor, K. ;

Garst, M. ;

Rosch, A. .

SCIENCE, 2010, 330 (6011) :1648-1651

[9]

Maekawa S., 2006, CONCEPTS SPIN ELECT

[10] Skyrmion Lattice in a Chiral Magnet [J].

Muehlbauer, S. ;

Binz, B. ;

Jonietz, F. ;

Pfleiderer, C. ;

Rosch, A. ;

Neubauer, A. ;

Georgii, R. ;

Boeni, P. .

SCIENCE, 2009, 323 (5916) :915-919

← 1 2 3 →