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Random-singlet-like state emergent in s = 5/2 frustrated cubic lattice

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Title
Random-singlet-like state emergent in s = 5/2 frustrated cubic lattice
Author(s)
Lee, Chanhyeon; Lee, Sang-Kwon; Suheon Lee; van Tol, J.; Choi, Kwang-Yong
Publication Date
2024-01
Journal
Journal of the Korean Physical Society, v.84, pp.151 - 157
Publisher
Korean Physical Society
Abstract
We employ thermodynamic and electron spin resonance (ESR) techniques to elucidate the effects of quenched disorder on a ground state of s= 5 / 2 frustrated cubic antiferromagnet La 3 Sb 3 Mn 2 O 14 . We observe the development of multiple ESR lines for temperatures below 80 K. Concomitantly, the ESR linewidth exhibits a power-law increase, accompanied by an intriguing shift in resonance fields. These observations point to the occurrence of inhomogeneous magnetism. Additionally, ac magnetic susceptibility and magnetization data obey a scaling relation of χ′(H, T) and M(H, T) in μBH/ kBT with the scaling exponent α= 0.53 . This scaling behavior alludes to the formation of a random-singlet-like state and the presence of abundant low-lying excitations. Our results highlight the concerted interplay of strong disorder and frustration to stabilize a putative random-singlet state even in classical and high-dimensional spin systems. © 2024, The Korean Physical Society.
URI
https://pr.ibs.re.kr/handle/8788114/14776
DOI
10.1007/s40042-023-00987-4
ISSN
0374-4884
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > 1. Journal Papers (저널논문)
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