Test of the Wiedemann-Franz law in an optimally doped cuprate

Romain Bel; Kamran Behnia; Cyril Proust; Peter Van Der Linden; Duncan Maude; Sergey I. Vedeneev

doi:10.1103/PhysRevLett.92.177003

Test of the Wiedemann-Franz law in an optimally doped cuprate

Romain Bel
, Kamran Behnia
, Cyril Proust
, Peter Van Der Linden
, Duncan Maude
, Sergey I. Vedeneev

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

Abstract

An experimental study aimed at checking the validity of the Wiedemann-Franz (WF) law in a hole doped cuprate at optimal-doping concentration was presented. On recovering the normal state of Bi_2+xSr_2-xCuO _6+δ by the application of a strong magnetic field it was found that a thermal conductivity slightly larger than expected by the WF law existed. The study showed that the departure from the value expected by the WF law was slightly larger than the estimated experimental resolution. The in-plane conductivity was measured with a standard two-thermometers one-heater setup in the presence of a magnetic field applied along the c axis.

Original language	English
Article number	177003
Pages (from-to)	177003-1-177003-4
Journal	Physical Review Letters
Volume	92
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.92.177003
Publication status	Published - 30 Apr 2004
Externally published	Yes

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10.1103/PhysRevLett.92.177003

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title = "Test of the Wiedemann-Franz law in an optimally doped cuprate",

abstract = "An experimental study aimed at checking the validity of the Wiedemann-Franz (WF) law in a hole doped cuprate at optimal-doping concentration was presented. On recovering the normal state of Bi2+xSr2-xCuO 6+δ by the application of a strong magnetic field it was found that a thermal conductivity slightly larger than expected by the WF law existed. The study showed that the departure from the value expected by the WF law was slightly larger than the estimated experimental resolution. The in-plane conductivity was measured with a standard two-thermometers one-heater setup in the presence of a magnetic field applied along the c axis.",

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doi = "10.1103/PhysRevLett.92.177003",

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AU - Bel, Romain

AU - Behnia, Kamran

AU - Proust, Cyril

AU - Van Der Linden, Peter

AU - Maude, Duncan

AU - Vedeneev, Sergey I.

PY - 2004/4/30

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AB - An experimental study aimed at checking the validity of the Wiedemann-Franz (WF) law in a hole doped cuprate at optimal-doping concentration was presented. On recovering the normal state of Bi2+xSr2-xCuO 6+δ by the application of a strong magnetic field it was found that a thermal conductivity slightly larger than expected by the WF law existed. The study showed that the departure from the value expected by the WF law was slightly larger than the estimated experimental resolution. The in-plane conductivity was measured with a standard two-thermometers one-heater setup in the presence of a magnetic field applied along the c axis.

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JF - Physical Review Letters

IS - 17

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ER -

Test of the Wiedemann-Franz law in an optimally doped cuprate

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