Purely electrical detection of a skyrmion in constricted geometry

被引：48

作者：

Hamamoto, Keita ^{[1
]}

Ezawa, Motohiko ^{[1
]}

Nagaosa, Naoto ^{[1
,2
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan

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

来源：

APPLIED PHYSICS LETTERS | 2016年 / 108卷 / 11期

关键词：

MAGNETIC SKYRMIONS; DYNAMICS; LATTICE; REAL;

D O I：

10.1063/1.4943949

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

How to detect the skyrmion position is a crucial problem in future skyrmionics since it corresponds to the reading process of information. We propose a method to detect the skyrmion position purely electrically by measuring the Hall conductance in a constricted geometry. The Hall conductance becomes maximum when a skyrmion is at the lead position. It is possible to detect the skyrmion position even at room temperature. We find an optimized width of the sample determined by the skyrmion radius. We also investigate the effects of elastic and inelastic scatterings, and finite temperature. Our results will be a basis of future skyrmion electronics. (C) 2016 AIP Publishing LLC.

引用

页数：4

共 27 条

[1] CONSIDERATIONS ON DOUBLE EXCHANGE [J].

ANDERSON, PW ;

HASEGAWA, H .

PHYSICAL REVIEW, 1955, 100 (02) :675-681

[2] Perpendicular reading of single confined magnetic skyrmions [J].

Crum, Dax M. ;

Bouhassoune, Mohammed ;

Bouaziz, Juba ;

Schweflinghaus, Benedikt ;

Bluegel, Stefan ;

Lounis, Samir .

NATURE COMMUNICATIONS, 2015, 6

[3] Laser-Induced Magnetic Nanostructures with Tunable Topological Properties [J].

Finazzi, M. ;

Savoini, M. ;

Khorsand, A. R. ;

Tsukamoto, A. ;

Itoh, A. ;

Duo, L. ;

Kirilyuk, A. ;

Rasing, Th ;

Ezawa, M. .

PHYSICAL REVIEW LETTERS, 2013, 110 (17)

[4] Quantized topological Hall effect in skyrmion crystal [J].

Hamamoto, Keita ;

Ezawa, Motohiko ;

Nagaosa, Naoto .

PHYSICAL REVIEW B, 2015, 92 (11)

[5]

Hanneken C, 2015, NAT NANOTECHNOL, V10, P1039, DOI [10.1038/nnano.2015.218, 10.1038/NNANO.2015.218]

[6]

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

[7] Theory of magnon-skyrmion scattering in chiral magnets [J].

Iwasaki, Junichi ;

Beekman, Aron J. ;

Nagaosa, Naoto .

PHYSICAL REVIEW B, 2014, 89 (06)

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

Iwasaki, Junichi ;

Mochizuki, Masahito ;

Nagaosa, Naoto .

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

[9] Discretized topological Hall effect emerging from skyrmions in constricted geometry [J].

Kanazawa, N. ;

Kubota, M. ;

Tsukazaki, A. ;

Kozuka, Y. ;

Takahashi, K. S. ;

Kawasaki, M. ;

Ichikawa, M. ;

Kagawa, F. ;

Tokura, Y. .

PHYSICAL REVIEW B, 2015, 91 (04)

[10] Large Topological Hall Effect in a Short-Period Helimagnet MnGe [J].

Kanazawa, N. ;

Onose, Y. ;

Arima, T. ;

Okuyama, D. ;

Ohoyama, K. ;

Wakimoto, S. ;

Kakurai, K. ;

Ishiwata, S. ;

Tokura, Y. .

PHYSICAL REVIEW LETTERS, 2011, 106 (15)

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