Transport of charge and entropy in the normal state of an optimally doped cuprate at T = 0 limit

R. Bel; K. Behnia; C. Proust; P. Van Der Linden; D. Maude; S. I. Vedeneev

doi:10.1016/j.physc.2004.03.119

Transport of charge and entropy in the normal state of an optimally doped cuprate at T = 0 limit

R. Bel
, K. Behnia
, C. Proust
, P. Van Der Linden
, D. Maude
, S. I. Vedeneev

Laboratoire de Physique Quantique
PSL Research University
INSA
P.N. Lebedev Physical Institute of the Russian Academy of Sciences

Research output: Contribution to journal › Conference article › peer-review

Abstract

The Wiedemann-Franz (WF) law strictly relates the conduction of heat and charge in a Fermi liquid at T=0 limit. Its validity or violation in the normal state of high-T_c cuprates has become a subject of intense investigation. However, until present, the normal state of hole-doped cuprates at optimal doping level has not been explored due to the difficulties of measuring sub-Kelvin thermal conductivity at very high magnetic fields. We present the first verification of the WF law in an optimally doped cuprate. By measuring the low-temperature thermal and electric conductivities of Bi ₂Sr₂CuO_6+δ at 25 T, we found that within experimental resolution, the ground state of high-T_c cuprates at optimal doping level can not be distinguished from a Fermi liquid.

Original language	English
Pages (from-to)	703-704
Number of pages	2
Journal	Physica C: Superconductivity and its Applications
Volume	408-410
Issue number	1-4
DOIs	https://doi.org/10.1016/j.physc.2004.03.119
Publication status	Published - 1 Aug 2004
Externally published	Yes
Event	Proceedings of the International Conference on Materials - Rio de Janeiro, Brazil Duration: 25 May 2003 → 30 May 2003

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10.1016/j.physc.2004.03.119

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title = "Transport of charge and entropy in the normal state of an optimally doped cuprate at T = 0 limit",

abstract = "The Wiedemann-Franz (WF) law strictly relates the conduction of heat and charge in a Fermi liquid at T=0 limit. Its validity or violation in the normal state of high-Tc cuprates has become a subject of intense investigation. However, until present, the normal state of hole-doped cuprates at optimal doping level has not been explored due to the difficulties of measuring sub-Kelvin thermal conductivity at very high magnetic fields. We present the first verification of the WF law in an optimally doped cuprate. By measuring the low-temperature thermal and electric conductivities of Bi 2Sr2CuO6+δ at 25 T, we found that within experimental resolution, the ground state of high-Tc cuprates at optimal doping level can not be distinguished from a Fermi liquid.",

author = "R. Bel and K. Behnia and C. Proust and \{Van Der Linden\}, P. and D. Maude and Vedeneev, \{S. I.\}",

year = "2004",

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doi = "10.1016/j.physc.2004.03.119",

language = "English",

volume = "408-410",

pages = "703--704",

journal = "Physica C: Superconductivity and its Applications",

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note = "Proceedings of the International Conference on Materials ; Conference date: 25-05-2003 Through 30-05-2003",

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TY - JOUR

T1 - Transport of charge and entropy in the normal state of an optimally doped cuprate at T = 0 limit

AU - Bel, R.

AU - Behnia, K.

AU - Proust, C.

AU - Van Der Linden, P.

AU - Maude, D.

AU - Vedeneev, S. I.

PY - 2004/8/1

Y1 - 2004/8/1

N2 - The Wiedemann-Franz (WF) law strictly relates the conduction of heat and charge in a Fermi liquid at T=0 limit. Its validity or violation in the normal state of high-Tc cuprates has become a subject of intense investigation. However, until present, the normal state of hole-doped cuprates at optimal doping level has not been explored due to the difficulties of measuring sub-Kelvin thermal conductivity at very high magnetic fields. We present the first verification of the WF law in an optimally doped cuprate. By measuring the low-temperature thermal and electric conductivities of Bi 2Sr2CuO6+δ at 25 T, we found that within experimental resolution, the ground state of high-Tc cuprates at optimal doping level can not be distinguished from a Fermi liquid.

AB - The Wiedemann-Franz (WF) law strictly relates the conduction of heat and charge in a Fermi liquid at T=0 limit. Its validity or violation in the normal state of high-Tc cuprates has become a subject of intense investigation. However, until present, the normal state of hole-doped cuprates at optimal doping level has not been explored due to the difficulties of measuring sub-Kelvin thermal conductivity at very high magnetic fields. We present the first verification of the WF law in an optimally doped cuprate. By measuring the low-temperature thermal and electric conductivities of Bi 2Sr2CuO6+δ at 25 T, we found that within experimental resolution, the ground state of high-Tc cuprates at optimal doping level can not be distinguished from a Fermi liquid.

U2 - 10.1016/j.physc.2004.03.119

DO - 10.1016/j.physc.2004.03.119

M3 - Conference article

AN - SCOPUS:4344620596

SN - 0921-4534

VL - 408-410

SP - 703

EP - 704

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - 1-4

T2 - Proceedings of the International Conference on Materials

Y2 - 25 May 2003 through 30 May 2003

ER -

Transport of charge and entropy in the normal state of an optimally doped cuprate at T = 0 limit

Abstract

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