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Beyond Kitaev physics in strong spin-orbit coupled magnets

journal contribution
posted on 2024-02-05, 11:21 authored by Ioannis RousochatzakisIoannis Rousochatzakis, Natalia Perkins, Qiang Luo, Hae-Young Kee

We review the recent advances and current challenges in the field of strong spin-orbit coupled Kitaev materials, with a particular emphasis on the physics beyond the exactly-solvable Kitaev spin liquid point. To this end, we present a comprehensive overview of the key exchange interactions in candidate materials with a specific focus on systems featuring effective Jeff = 1/2 magnetic moments. This includes, but not limited to, 5d5 iridates, 4d5 ruthenates and 3d7 cobaltates. Our exploration covers the microscopic origins of these interactions, along with a systematic attempt to map out the most intriguing correlated regimes of the multi-dimensional parameter space. Our approach is guided by robust symmetry and duality transformations as well as insights from a wide spectrum of analytical and numerical studies. We also survey higher spin Kitaev models and recent exciting results on quasi-one-dimensional models and discuss their relevance to higher-dimensional models. Finally, we highlight some of the key questions in the field as well as future directions.

Funding

Detecting fractionalization in strongly correlated magnets

Engineering and Physical Sciences Research Council

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Identification of Fractionalized Excitations in Quantum Spin Liquids and Related Materials

Office of Basic Energy Sciences

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Alexander von Humboldt Foundation

National Science Foundation under Grant No. NSF PHY-1748958

Natural Science Foundation of Jiangsu Province Grant No. BK20220876

National Natural Science Foundation of China Grant Nos. 12247183 and 12304176

Natural Sciences and Engineering Research Council of Canada Discovery Grant No. 2022-04601

Canadian Institute for Advanced Research

Canada Research Chairs Program

Aspen Center for Physics, supported by National Science Foundation Grant PHY-2210452

History

School

  • Science

Department

  • Physics

Published in

Reports on Progress in Physics

Volume

87

Publisher

IOP Publishing

Version

  • AM (Accepted Manuscript)

Rights holder

© IOP Publishing Ltd

Publisher statement

This is the Accepted Manuscript version of an article accepted for publication in Reports on Progress in Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1361-6633/ad208d.

Acceptance date

2024-01-19

Publication date

2024-02-02

Copyright date

2024

ISSN

0034-4885

eISSN

1361-6633

Language

  • en

Depositor

Dr Ioannis Rousochatzakis. Deposit date: 2 February 2024

Article number

026502

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