The low-temperature specific heat of high-Tc superconductors is investigated. A model is presented in which the low-energy excitations provided by the apex oxygen are coupled to the quasi-particle excitations of the superconducting state. A path-integral approach is used to derive the partition function of the system. It is shown that the apex oxygen quantum tunneling accounts for a finite linear contribution to the low-temperature specific heat. © 1991.

Anomalous low-temperature specific heat in high-Tc superconductors. Presence of an intrinsic mechanism

ZOLI, Marco
1991-01-01

Abstract

The low-temperature specific heat of high-Tc superconductors is investigated. A model is presented in which the low-energy excitations provided by the apex oxygen are coupled to the quasi-particle excitations of the superconducting state. A path-integral approach is used to derive the partition function of the system. It is shown that the apex oxygen quantum tunneling accounts for a finite linear contribution to the low-temperature specific heat. © 1991.
1991
262
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11581/246586
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