Unusual field dependence of thermal conductivity in La2-xSrxCuO4: Suppression of quasi-particle coherence

N. P. Ong; K. Krishana; T. Kimura

doi:10.1016/S0921-4534(97)00229-3

Unusual field dependence of thermal conductivity in La_2-xSr_xCuO₄: Suppression of quasi-particle coherence

N. P. Ong
, K. Krishana
, T. Kimura

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The anomaly in the thermal conductivity κ of La_2-xSr_xCuO₄ is very sensitive to field B. Below 14 Tesla, it is quite well described by Y(x) = ψ(1/2 + 1/2) + 1n(x) where ψ(x) is the digamma function. The experiment suggests that the field suppression is a quantum decoherence effect involving quasi-particles diffusing in the disordered CuO₂ plane. Understanding how B affects qp diffusion may provide a sensitive probe of coherence effects using the heat current.

Original language	English (US)
Pages (from-to)	244-247
Number of pages	4
Journal	Physica C: Superconductivity and its Applications
Volume	282-287
Issue number	PART 1
DOIs	https://doi.org/10.1016/S0921-4534(97)00229-3
State	Published - Aug 1997

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/S0921-4534(97)00229-3

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abstract = "The anomaly in the thermal conductivity κ of La2-xSrxCuO4 is very sensitive to field B. Below 14 Tesla, it is quite well described by Y(x) = ψ(1/2 + 1/2) + 1n(x) where ψ(x) is the digamma function. The experiment suggests that the field suppression is a quantum decoherence effect involving quasi-particles diffusing in the disordered CuO2 plane. Understanding how B affects qp diffusion may provide a sensitive probe of coherence effects using the heat current.",

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T2 - Suppression of quasi-particle coherence

AU - Ong, N. P.

AU - Krishana, K.

AU - Kimura, T.

PY - 1997/8

Y1 - 1997/8

N2 - The anomaly in the thermal conductivity κ of La2-xSrxCuO4 is very sensitive to field B. Below 14 Tesla, it is quite well described by Y(x) = ψ(1/2 + 1/2) + 1n(x) where ψ(x) is the digamma function. The experiment suggests that the field suppression is a quantum decoherence effect involving quasi-particles diffusing in the disordered CuO2 plane. Understanding how B affects qp diffusion may provide a sensitive probe of coherence effects using the heat current.

AB - The anomaly in the thermal conductivity κ of La2-xSrxCuO4 is very sensitive to field B. Below 14 Tesla, it is quite well described by Y(x) = ψ(1/2 + 1/2) + 1n(x) where ψ(x) is the digamma function. The experiment suggests that the field suppression is a quantum decoherence effect involving quasi-particles diffusing in the disordered CuO2 plane. Understanding how B affects qp diffusion may provide a sensitive probe of coherence effects using the heat current.

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UR - https://www.scopus.com/pages/publications/19244382953#tab=citedBy

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JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - PART 1

ER -

Unusual field dependence of thermal conductivity in La_2-xSr_xCuO₄: Suppression of quasi-particle coherence

Abstract

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