TY - JOUR
T1 - Thermal Hall Effect in a Phonon-Glass Ba3CuSb2 O9
AU - Sugii, K.
AU - Shimozawa, M.
AU - Watanabe, D.
AU - Suzuki, Y.
AU - Halim, M.
AU - Kimata, M.
AU - Matsumoto, Y.
AU - Nakatsuji, S.
AU - Yamashita, M.
N1 - Funding Information:
We thank H. Katsura, M. Mori, M. Sato, and H. Sawa for valuable discussions, and K. Torizuka and Y. Uwatoko for technical support. This research was supported by Yamada Science Foundation, Toray Science Foundation, JSPS KAKENHI Grants No.15K17691, No.16K17743, and No.16H02209, Grants-in-Aids for Scientific Research on Innovative Areas (No.15H05882 and No.15H05883), and Program for Advancing Strategic International Networks to Accelerate the Circulation of Talented Researchers (No.R2604) from JSPS.
Publisher Copyright:
© 2017 American Physical Society.
PY - 2017/4/7
Y1 - 2017/4/7
N2 - A distinct thermal Hall signal is observed in a quantum spin liquid candidate Ba3CuSb2O9. The transverse thermal conductivity shows a power-law temperature dependence below 50 K, where a spin gap opens. We suggest that because of the very low longitudinal thermal conductivity and the thermal Hall signals, a phonon Hall effect is induced by strong phonon scattering of orphan Cu2+ spins formed in the random domains of the Cu2+-Sb5+ dumbbells in Ba3CuSb2O9.
AB - A distinct thermal Hall signal is observed in a quantum spin liquid candidate Ba3CuSb2O9. The transverse thermal conductivity shows a power-law temperature dependence below 50 K, where a spin gap opens. We suggest that because of the very low longitudinal thermal conductivity and the thermal Hall signals, a phonon Hall effect is induced by strong phonon scattering of orphan Cu2+ spins formed in the random domains of the Cu2+-Sb5+ dumbbells in Ba3CuSb2O9.
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U2 - 10.1103/PhysRevLett.118.145902
DO - 10.1103/PhysRevLett.118.145902
M3 - Article
C2 - 28430491
AN - SCOPUS:85017145319
SN - 0031-9007
VL - 118
JO - Physical Review Letters
JF - Physical Review Letters
IS - 14
M1 - 145902
ER -