Electrical probing of field-driven cascading quantized transitions of skyrmion cluster states in MnSi nanowires

Du, Haifeng; Liang, Dong; Jin, Chiming; Kong, Lingyao; Stolt, Matthew J.; Ning, Wei; Yang, Jiyong; Xing, Ying; Wang, Jian; Che, Renchao; Zang, Jiadong; Jin, Song; Zhang, Yuheng; Tian, Mingliang

doi:10.1038/ncomms8637

Title: Electrical probing of field-driven cascading quantized transitions of skyrmion cluster states in MnSi nanowires

Journal Article · Mon Jul 06 00:00:00 EDT 2015 · Nature Communications

DOI:https://doi.org/10.1038/ncomms8637· OSTI ID:1623989

Du, Haifeng ^[1]; Liang, Dong ^[2]; Jin, Chiming ^[1]; Kong, Lingyao ^[3]; Stolt, Matthew J. ^[2]; Ning, Wei ^[1]; Yang, Jiyong ^[1]; Xing, Ying ^[4]; Wang, Jian ^[4]; Che, Renchao ^[5]; Zang, Jiadong ^[6]; Jin, Song ^[2]; Zhang, Yuheng ^[7]; Tian, Mingliang ^[7]

Chinese Academy of Sciences (CAS), Hefei (China). High Magnetic Field Lab.
Univ. of Wisconsin, Madison, WI (United States)
China Academy of Engineering Physics (China)
Peking Univ., Beijing (China)
Fudan Univ., Shanghai (China)
Johns Hopkins Univ., Baltimore, MD (United States); Univ. of New Hampshire, Durham, NH (United States)
Chinese Academy of Sciences (CAS), Hefei (China). High Magnetic Field Lab.; Collaborative Innovation Center of Advanced Microstructures, Nanjing (China)

Magnetic skyrmions are topologically stable whirlpool-like spin textures that offer great promise as information carriers for future spintronic devices. To enable such applications, particular attention has been focused on the properties of skyrmions in highly confined geometries such as one-dimensional nanowires. Hitherto, it is still experimentally unclear what happens when the width of the nanowire is comparable to that of a single skyrmion. Here, we achieve this by measuring the magnetoresistance in ultra-narrow MnSi nanowires. We observe quantized jumps in magnetoresistance versus magnetic field curves. By tracking the size dependence of the jump number, we infer that skyrmions are assembled into cluster states with a tunable number of skyrmions, in agreement with the Monte Carlo simulations. Our results enable an electric reading of the number of skyrmions in the cluster states, thus laying a solid foundation to realize skyrmion-based memory devices.

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Research Organization:: Johns Hopkins Univ., Baltimore, MD (United States)

Sponsoring Organization:: USDOE Office of Science (SC); National Key Basic Research of China; National Natural Science Foundation of China (NSFC); Anhui Provincial Nature Science Foundation of China; National Basic Research Program of China; National Science Foundation (NSF); Theoretical Interdisciplinary Physics and Astrophysics Center

Grant/Contract Number:: FG02-08ER46544; 2011CBA00111; 11174294; 11474290; 11104281; 11374302; 11222434; U1432251; 1308085QA16; 2013CB934600; ECCS-1231916

OSTI ID:: 1623989

Journal Information:: Nature Communications, Vol. 6, Issue 1; ISSN 2041-1723

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 73 works

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