| Issue |
Europhys. Lett.
Volume 33, Number 9, March III 1996
|
|
|---|---|---|
| Page(s) | 695 - 700 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1996-00401-5 | |
| Published online | 01 September 2002 | |
Low-temperature behaviour of the thermal conductivity of high-Tc superconductors: likeliness of wave pairing
SUPRAS, Institut de Physique B5
Université de Liège -
B-40000 Liège, Belgium
Received:
8
September
1995
Accepted:
25
January
1996
We consider the temperature dependence of the thermal conductivity of
high-Tc superconductors with a superconducting gap parameter of either
s -wave or 
-wave type, respectively. We compare the theoretical
results at low temperatures within a Lawrence-Doniach model for the energy
spectrum. The previously reported low-temperature behaviour of the thermal
conductivity of 
, 
,
and 
compounds is
analysed. We show that this behaviour is inconsistent with an isotropic
s -wave gap parameter but can be explained by assuming that the symmetry of
the gap parameter is of type.
PACS: 74.25.Fy – Transport properties (electric and thermal conductivity, thermoelectric effects, etc.) / 74.72.-h – High-Tc cuprates
© EDP Sciences, 1996
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