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Dynamic spin fluctuations in the frustrated A-site spinel CuAl2O4

PHYSICAL REVIEW B American Physical Society (APS) 102:1 (2020) 14439

Authors:

Hwanbeom Cho, R Nirmala, Jaehong Jeong, Peter J Baker, Hikaru Takeda, Nobuyoshi Mera, Stephen J Blundell, Masashi Takigawa, Dt Adroja, Je-Geun Park

Abstract:

© 2020 American Physical Society. We performed nuclear magnetic resonance (NMR) and muon spin relaxation (μSR) 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 μSR spectra below T∗ show that the ground state has dynamic spin fluctuations, distinct from those of conventional spin glasses.
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Dynamic Spin Fluctuations in the Frustrated A-site Spinel CuAl2O4

(2020)

Authors:

Hwanbeom Cho, R Nirmala, Jaehong Jeong, Peter J Baker, Hikaru Takeda, Nobuyoshi Mera, Stephen J Blundell, Masashi Takigawa, DT Adroja, Je-Geun Park
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Magnetism and Néel skyrmion dynamics in GaV4S8-ySey

Physical Review Research American Physical Society (APS) 2:3 (2020) 032001

Authors:

TJ Hicken, SJR Holt, KJA Franke, Z Hawkhead, A Štefančič, MN Wilson, M Gomilšek, BM Huddart, SJ Clark, MR Lees, FL Pratt, SJ Blundell, G Balakrishnan, T Lancaster
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Magnetic order and ballistic spin transport in a sine-Gordon spin chain

(2020)

Authors:

BM Huddart, M Gomilšek, TJ Hicken, FL Pratt, SJ Blundell, PA Goddard, SJ Kaech, JL Manson, T Lancaster
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From magnetic order to quantum disorder: a $\mu$SR study of the Zn-barlowite series of $S={\frac{1}{2}}$ kagomé antiferromagnets, Zn$_{x}$Cu$_{4-x}$(OH)$_{6}$FBr

(2020)

Authors:

K Tustain, B Ward-O'Brien, F Bert, T-H Han, H Luetkens, T Lancaster, BM Huddart, PJ Baker, L Clark
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