TRANSPORT-PROPERTIES OF EXTENDED-S-STATE SUPERCONDUCTORS

Note

关键词: HEAVY-FERMION SUPERCONDUCTORS;    D-WAVE SUPERCONDUCTOR;    PENETRATION DEPTH;    CONDUCTIVITY;    SCATTERING;   

DOI  :  10.1103/PhysRevB.52.R3856

来源: SCIE

【 摘 要 】

Superconducting states with extended-s-wave symmetry have been suggested in connection with recent angle-resolved photoemission experiments on Bi2Sr2CaCu2O8. In the presence of impurities, thermodynamic properties of such states reflect a residual density of states N(0) for a range of concentrations. While properties reflecting N(omega) alone will be similar to those of d-wave states, transport measurements may be shown to distinguish qualitatively between the two. In contrast to the d-wave case with unitarity limit scattering, limiting low-temperature residual conductivities in the s-wave state are large and scale inversely with impurity concentration.

【 授权许可】

Free