Possible realization of the Majumdar-Ghosh point in the mineral szenicsite

Berlie, Adam; Terry, Ian

doi:10.1103/physrevb.105.l220404

Possible realization of the Majumdar-Ghosh point in the mineral szenicsite

Berlie, Adam; Terry, Ian

Authors

Adam Berlie

Dr Ian Terry ian.terry@durham.ac.uk
Associate Professor

Abstract

The Majumder-Ghosh (MG) point is a point in parameter space for a one-dimensional (1D) frustrated system where α = J 1 / J 2 = 0.5 and the ground state is shown to be a superposition of singlet states. This leads to no magnetic order, instead the ground state is dominated by electronic dynamics, much like that of a spin liquid. Szenicsite is a natural mineral that is predicted to have isolated 1D Cu 2 + chains and lies close to or on the MG point. In this work we use muon spin spectroscopy to demonstrate that szenicsite does not magnetically order down to 100 mK and there is an absence of a spin gap, with 1D magnetic excitations dominating. Therefore, we believe szenicsite shows the properties that would put it on the MG point and, as such, it is an interesting system for studying the properties of this quantum mechanical state.

Citation

Berlie, A., & Terry, I. (2022). Possible realization of the Majumdar-Ghosh point in the mineral szenicsite. Physical Review B, 105(22), Article L220404. https://doi.org/10.1103/physrevb.105.l220404

Journal Article Type	Article
Acceptance Date	Jun 9, 2022
Online Publication Date	Jun 22, 2022
Publication Date	Jun 1, 2022
Deposit Date	Jul 11, 2022
Publicly Available Date	Jul 11, 2022
Journal	Physical review B: Condensed matter and materials physics
Print ISSN	2469-9950
Electronic ISSN	2469-9969
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	105
Issue	22
Article Number	L220404
DOI	https://doi.org/10.1103/physrevb.105.l220404

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Copyright Statement
Reprinted with permission from the American Physical Society: Berlie, Adam & Terry, Ian (2022). Possible realization of the Majumdar-Ghosh point in the mineral szenicsite. Physical Review B 105(22): L220404. © (2022) by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.