Skyrmion formation in a bulk chiral magnet at zero magnetic field and above room temperature

被引：72

作者：

Karube, K. ^{[1
]}

White, J. S. ^{[2
]}

Morikawa, D. ^{[1
]}

Bartkowiak, M. ^{[3
]}

Kikkawa, A. ^{[1
]}

Tokunaga, Y. ^{[4
]}

Arima, T. ^{[1
,4
]}

Ronnow, H. M. ^{[5
]}

Tokura, Y. ^{[1
,6
]}

Taguchi, Y. ^{[1
]}

机构：

[1] RIKEN, CEMS, Wako, Saitama 3510198, Japan

[2] PSI, Lab Neutron Scattering & Imaging LNS, CH-5232 Villigen, Switzerland

[3] PSI, Lab Sci Dev & Novel Mat LDM, CH-5232 Villigen, Switzerland

[4] Univ Tokyo, Dept Adv Mat Sci, Kashiwa, Chiba 2778561, Japan

[5] Ecole Polytech Fed Lausanne, Inst Phys, LQM, CH-1015 Lausanne, Switzerland

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

来源：

PHYSICAL REVIEW MATERIALS | 2017年 / 1卷 / 07期

基金：

欧洲研究理事会; 日本学术振兴会; 瑞士国家科学基金会;

关键词：

LATTICE; DYNAMICS; DRIVEN;

D O I：

10.1103/PhysRevMaterials.1.074405

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report that in a beta-Mn-type chiral magnet Co9Zn9Mn2, skyrmions are realized as a metastable state over a wide temperature range, including room temperature, via field cooling through the thermodynamic equilibrium skyrmion phase that exists below a transition temperature T-c similar to 400 K. The once-created metastable skyrmions survive at zero magnetic field both at and above room temperature. Such robust skyrmions in a wide temperature and magnetic field region demonstrate the key role of topology and provide a significant step toward technological applications of skyrmions in bulk chiral magnets.

引用

页数：9

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