Long-range magnetic order in the ${\tilde S}=1/2$ triangular lattice antiferromagnet KCeS$

Long-range magnetic order in the ${\tilde S}=1/2$ triangular lattice antiferromagnet KCeS$_2$

Published:2020-09-17 Issue:3 Volume:9 Page:
ISSN:2542-4653
Container-title:SciPost Physics
language:
Short-container-title:SciPost Phys.

Author:

Bastien Gaël¹,Rubrecht Bastian²¹,Häußler Ellen²,Schlender Philipp²,Zangeneh Ziba¹,Avdoshenko Stanislav¹,Sarkar Rajib²,Alfonsov Alexey¹,Luther Sven²³,Onykiienko Yevhen A.²,Walker Helen C.⁴,Kühne Hannes³,Grinenko Vadim²¹,Guguchia Zurab⁵,Kataev Vladislav¹,Klauss Hans-Henning²,Hozoi Liviu¹,van den Brink Jeroen²¹,Inosov Dmytro S.²,Büchner Bernd²¹,Wolter-Giraud Anja¹,Doert Thomas²

Affiliation:

1. Leibniz Institute for Solid State and Materials Research

2. Dresden University of Technology

3. Helmholtz-Zentrum Dresden-Rossendorf

4. Rutherford Appleton Laboratory

5. Paul Scherrer Institute

Abstract

Recently, several putative quantum spin liquid (QSL) states were discovered in

{\tilde S} = 1/2

S̃=1/2 rare-earth based triangular-lattice antiferromagnets (TLAF) with the delafossite structure. In order to elucidate the conditions for a QSL to arise, we report here the discovery of a long-range magnetic order in the Ce-based TLAF KCeS

2 below

T_{\mathrm N} = 0.38

TN=0.38 K, despite the same delafossite structure. Finally, combining various experimental and computational methods, we characterize the crystal electric field scheme, the magnetic anisotropy and the magnetic ground state of KCeS

Funder

Deutsche Forschungsgemeinschaft

Horizon 2020

Publisher

Stichting SciPost

Subject

General Physics and Astronomy

Link

https://scipost.org/10.21468/SciPostPhys.9.3.041/pdf

Reference62 articles.

1. Geometrical frustration

2. Spin liquids in frustrated magnets