Evidence for ballistic thermal conduction in the one-dimensional spin system Sr2CuO3

N. Takahashi; T. Kawamata; T. Adachi; T. Noji; Y. Koike; K. Kudo; N. Kobayashi

doi:10.1063/1.2355166

Evidence for ballistic thermal conduction in the one-dimensional spin system Sr₂CuO₃

N. Takahashi, T. Kawamata, T. Adachi, T. Noji, Y. Koike, K. Kudo, N. Kobayashi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Citations (Scopus)

Abstract

We have measured the thermal conductivity along the b axis, κ_b parallel to the one-dimensional (1D) spin chain of Sr ₂Cu_1-xPd_xO₃ 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 κ_b 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.

Original language	English
Title of host publication	LOW TEMPERATURE PHYSICS
Subtitle of host publication	24th International Conference on Low Temperature Physics - LT24
Pages	1265-1266
Number of pages	2
DOIs	https://doi.org/10.1063/1.2355166
Publication status	Published - Dec 1 2006
Externally published	Yes
Event	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States Duration: Aug 10 2006 → Oct 17 2006

Publication series

Name	AIP Conference Proceedings
Volume	850
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
Country/Territory	United States
City	Orlando, FL
Period	8/10/06 → 10/17/06

Keywords

Impurity effects
Low-dimensional quantum spin system
Thermal conductivity

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.2355166

Cite this

Evidence for ballistic thermal conduction in the one-dimensional spin system Sr₂CuO₃. / Takahashi, N.; Kawamata, T.; Adachi, T.; Noji, T.; Koike, Y.; Kudo, K.; Kobayashi, N.

LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24. 2006. p. 1265-1266 (AIP Conference Proceedings; Vol. 850).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Takahashi, N, Kawamata, T, Adachi, T, Noji, T, Koike, Y, Kudo, K & Kobayashi, N 2006, Evidence for ballistic thermal conduction in the one-dimensional spin system Sr₂CuO₃. in LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24. AIP Conference Proceedings, vol. 850, pp. 1265-1266, LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24, Orlando, FL, United States, 8/10/06. https://doi.org/10.1063/1.2355166

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abstract = "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.",

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