Cited 0 time in webofscience Cited 2 time in scopus

Quantum disordered state in the J(1)-J(2) square-lattice antiferromagnet Sr2Cu(Te0.95W0.05)O-6

Title
Quantum disordered state in the J(1)-J(2) square-lattice antiferromagnet Sr2Cu(Te0.95W0.05)O-6
Authors
Yoon, SungwonLee, WonjunLee, S.Park, J.Lee, C. H.Choi, Y. S.Do, S-HChoi, WoojaeChen, Wei-TinChou, FangchengGorbunov, D., IOshima, YugoAli, AnzarSingh, YogeshBerlie, AdamWatanabe, IChoi, Kwang-Yong
Issue Date
2021-01
Citation
Physical Review Materials, 5(1), 014411
Type
Article
Article Type
Article
Keywords
MODEL
ISSN
2475-9953
Abstract
The B-site ordered double perovskites Sr2Cu(Te1-xWx)O6 provide an excellent arena for investigating exotic phases expected for the J1-J2 square-lattice Heisenberg antiferromagnet. Here, combining magnetic susceptibility and specific-heat measurements with electron spin resonance (ESR) and muon spin rotation/relaxation (μSR) techniques, we explore a spin-liquid-like state in the vicinity of the Néel critical end point (x=0.05-0.1). The specific heat and the ESR and muon relaxation rates give evidence for an energy hierarchy of low-energy excitations, reminiscent of randomness-induced singlet states. In addition, the weak transverse μSR data show a fraction of frozen magnetic moments in the random-singlet background. The origin of a random-singlet-like state near the phase boundary is discussed in terms of concomitant exchange randomness and local strain generated by the W6+-for-Te6+ substitution. © 2021 American Physical Society.
URI
http://hdl.handle.net/20.500.11750/12989
DOI
10.1103/PhysRevMaterials.5.014411
Publisher
American Physical Society
Files:
There are no files associated with this item.
Collection:
ETC1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE