TY - JOUR
T1 - Heat Transport in a Strongly Overdoped Cuprate
T2 - Fermi Liquid and a Pure d-Wave BCS Superconductor
AU - Proust, Cyril
AU - Boaknin, Etienne
AU - Hill, RW
AU - Taillefer, Louis
AU - Mackenzie, Andrew Peter
PY - 2002/9/30
Y1 - 2002/9/30
N2 - The transport of heat and charge in the overdoped cuprate superconductor Tl2Ba2CuO6+δ was measured down to low temperature. In the normal state, obtained by applying a magnetic field greater than the upper critical field, the Wiedemann-Franz law is verified to hold perfectly. In the superconducting state, a large residual linear term is observed in the thermal conductivity, in quantitative agreement with BCS theory for a d-wave superconductor. This is compelling evidence that the electrons in overdoped cuprates form a Fermi liquid, with no indication of spin-charge separation.
AB - The transport of heat and charge in the overdoped cuprate superconductor Tl2Ba2CuO6+δ was measured down to low temperature. In the normal state, obtained by applying a magnetic field greater than the upper critical field, the Wiedemann-Franz law is verified to hold perfectly. In the superconducting state, a large residual linear term is observed in the thermal conductivity, in quantitative agreement with BCS theory for a d-wave superconductor. This is compelling evidence that the electrons in overdoped cuprates form a Fermi liquid, with no indication of spin-charge separation.
UR - http://www.scopus.com/inward/record.url?scp=45849155551&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.89.147003
DO - 10.1103/PhysRevLett.89.147003
M3 - Article
SN - 0031-9007
VL - 89
JO - Physical Review Letters
JF - Physical Review Letters
IS - 14
M1 - 147003
ER -