Half-integer quantized anomalous thermal Hall effect in the Kitaev material candidate α-RuCl3

被引：190

作者：

Yokoi, T. ^{[1
]}

Ma, S. ^{[1
]}

Kasahara, Y. ^{[1
]}

Kasahara, S. ^{[1
]}

Shibauchi, T. ^{[2
]}

Kurita, N. ^{[3
]}

Tanaka, H. ^{[3
]}

Nasu, J. ^{[4
]}

Motome, Y. ^{[5
]}

Hickey, C. ^{[6
]}

Trebst, S. ^{[6
]}

Matsuda, Y. ^{[1
]}

机构：

[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

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

[3] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan

[4] Yokohama Natl Univ, Dept Phys, Yokohama, Kanagawa 2408501, Japan

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

[6] Univ Cologne, Inst Theoret Phys, D-50937 Cologne, Germany

来源：

SCIENCE | 2021年 / 373卷 / 6554期

关键词：

QUANTUM; FERMIONS;

D O I：

10.1126/science.aay5551

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Half-integer thermal quantum Hall conductance has recently been reported for the two-dimensional honeycomb material alpha-RuCl3. We found that the half-integer thermal Hall plateau appears even for a magnetic field with no out-of-plane components. The measured field-angular variation of the quantized thermal Hall conductance has the same sign structure as the topological Chern number of the pure Kitaev spin liquid. This observation suggests that the non-Abelian topological order associated with fractionalization of the local magnetic moments persists even in the presence of non-Kitaev interactions in alpha-RuCl3.

引用

页码：568 / +

页数：29

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