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.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
