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

T. Yokoi, S. Ma, Y. Kasahara, S. Kasahara, T. Shibauchi, N. Kurita, H. Tanaka, J. Nasu, Y. Motome, C. Hickey, S. Trebst, Y. Matsuda

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Half-integer thermal quantum Hall conductance has recently been reported for the two-dimensional honeycomb material a-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 a-RuCl3.

Original languageEnglish
Article numberaay5551
JournalScience
Volume373
Issue number6554
DOIs
Publication statusPublished - Jul 30 2021
Externally publishedYes

ASJC Scopus subject areas

  • General

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