Evidence of a Phonon Hall Effect in the Kitaev Spin Liquid Candidate α − RuCl 3

• Published in: Physical review. X Vol. 12; no. 2
• Main Authors: Lefrançois, É., Grissonnanche, G., Baglo, J., Lampen-Kelley, P., Yan, J.-Q., Balz, C., Mandrus, D., Nagler, S. E., Kim, S., Kim, Young-June, Doiron-Leyraud, N., Taillefer, Louis
• Format: Journal Article
• Language: English
• Published: United States American Physical Society 29.04.2022
• Subjects: antiferromagnetism; antiferromagnets; honeycomb lattice; insulators; Majorana fermions; MATERIALS SCIENCE; quantum spin liquid; thermal Hall effect; transport techniques

The material α-RuCl3 has been the subject of intense scrutiny as a potential Kitaev quantum spin liquid, predicted to display Majorana fermions as low-energy excitations. In practice, α-RuCl3 undergoes a transition to a state with antiferromagnetic order below a temperature TN≈7 K , but this order c...