Balz, C., Lampen-Kelley, P., Banerjee, A. et al. (10 more authors) (2019) Finite field regime for a quantum spin liquid in α−RuCl3. Physical Review B, 100 (6). 060405. ISSN 2469-9950
Abstract
An external magnetic field can induce a transition in α-RuCl3 from an ordered zigzag state to a disordered state that is possibly related to the Kitaev quantum spin liquid. Here, we present field-dependent inelastic neutron scattering and magnetocaloric effect measurements implying the existence of an additional transition out of the quantum spin-liquid phase at an upper field limit Bu. The neutron scattering shows three distinct regimes of magnetic response. In the low-field ordered state the response shows magnon peaks; the intermediate-field regime shows only continuum scattering, and above Bu the response shows sharp magnon peaks at the lower bound of a strong continuum. Measurable dispersion of magnon modes along the (0,0,L) direction implies non-negligible interplane interactions. Combining the magnetocaloric effect measurements with other data, a T-B phase diagram is constructed. The results constrain the range where one might expect to observe quantum spin-liquid behavior in α-RuCl3.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 American Physical Society. Reproduced in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 22 Oct 2020 13:18 |
Last Modified: | 23 Oct 2020 07:58 |
Status: | Published |
Publisher: | American Physical Society (APS) |
Refereed: | Yes |
Identification Number: | 10.1103/physrevb.100.060405 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:167058 |