TY - GEN
T1 - Evidence for ballistic thermal conduction in the one-dimensional spin system Sr2CuO3
AU - Takahashi, N.
AU - Kawamata, T.
AU - Adachi, T.
AU - Noji, T.
AU - Koike, Y.
AU - Kudo, K.
AU - Kobayashi, N.
PY - 2006/12/1
Y1 - 2006/12/1
N2 - We have measured the thermal conductivity along the b axis, κb parallel to the one-dimensional (1D) spin chain of Sr 2Cu1-xPdxO3 single crystals including nonmagnetic impurities of Pd2+, in order to investigate possible ballistic thermal conduction. It has been found that the mean free path of spinons estimated from the thermal conductivity due to spinons, which is obtained by subtracting the thermal conductivity due to phonons from κb using the Debye model, is comparable with the average length of finite spin chains between spin defects estimated from the magnetic susceptibility measurements. This proves that the thermal conduction due to spinons at low temperatures in the 1D spin system Sr2CuO3 is ballistic.
AB - We have measured the thermal conductivity along the b axis, κb parallel to the one-dimensional (1D) spin chain of Sr 2Cu1-xPdxO3 single crystals including nonmagnetic impurities of Pd2+, in order to investigate possible ballistic thermal conduction. It has been found that the mean free path of spinons estimated from the thermal conductivity due to spinons, which is obtained by subtracting the thermal conductivity due to phonons from κb using the Debye model, is comparable with the average length of finite spin chains between spin defects estimated from the magnetic susceptibility measurements. This proves that the thermal conduction due to spinons at low temperatures in the 1D spin system Sr2CuO3 is ballistic.
KW - Impurity effects
KW - Low-dimensional quantum spin system
KW - Thermal conductivity
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U2 - 10.1063/1.2355166
DO - 10.1063/1.2355166
M3 - Conference contribution
AN - SCOPUS:33947540212
SN - 0735403473
SN - 9780735403475
T3 - AIP Conference Proceedings
SP - 1265
EP - 1266
BT - LOW TEMPERATURE PHYSICS
T2 - LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
Y2 - 10 August 2006 through 17 October 2006
ER -