Half-integer quantized anomalous thermal Hall effect in the Kitaev material candidate α-RuCl3.
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| Title: | Half-integer quantized anomalous thermal Hall effect in the Kitaev material candidate α-RuCl3. |
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| Authors: | Yokoi, T., Ma, S., Kasahara, Y., Kasahara, S., Shibauchi, T., Kurita, N., Tanaka, H., Nasu, J., Motome, Y., Hickey, C., Trebst, S., Matsuda, Y. |
| Source: | Science (pre-March 2025). 7/30/2021, Vol. 373 Issue 6554, p568-572. 5p. 4 Diagrams. |
| Subjects: | Electric admittance, Alternating currents, Thermal Hall effect, Hall effect, Chern classes |
| 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. [ABSTRACT FROM AUTHOR] |
| Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
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| 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. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 00368075 |
| DOI: | 10.1126/science.aay5551 |
