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Dynamic spin fluctuations in the frustrated A-site spinel CuAl2O4

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Title
Dynamic spin fluctuations in the frustrated A-site spinel CuAl2O4
Author(s)
Hwanbeom Cho; R. Nirmala; Jaehong Jeong; Peter J. Baker; Hikaru Takeda; Nobuyoshi Mera; Stephen J. Blundell; Masashi Takigawa; D. T. Adroja; Je-Geun Park
Subject
RELAXATION, ; MGAL2O4, ; NMR, ; SRCR8GA4O19, ; LIQUID
Publication Date
2020-07
Journal
PHYSICAL REVIEW B, v.102, no.1, pp.014439
Publisher
AMER PHYSICAL SOC
Abstract
© 2020 American Physical Society. We performed nuclear magnetic resonance (NMR) and muon spin relaxation (mu SR) experiments to identify the magnetic ground state of the frustrated quantum A-site spinel, CuAl2O4. Our results verify that the ground state does not exhibit a long-range magnetic ordering, but a glasslike transition manifests at T* = 2.3K. However, the Gaussian shape and the weak longitudinal field dependence of mu SR spectra below T* show that the ground state has dynamic spin fluctuations, distinct from those of conventional spin glasses
URI
https://pr.ibs.re.kr/handle/8788114/7743
DOI
10.1103/PhysRevB.102.014439
ISSN
2469-9950
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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