Temperature dependence of the magnetic penetration depth in BKBO superconductor

Abstract

Temperature dependence of the magnetic penetration depth, $\lambda$(T), was measured in the Meissner state in single crystals B${}_{1-x}$K${}_x$BiO${}_3$ (x=0.37) using tunnel diode resonator technique. At low temperatures, $0.013\le T/T_c\le 0.4$, $\lambda$(T) is exponentially flat, which provides a strong evidence for conventional s-wave BCS behavior. Numerical analysis of the data rules out the possibility of a gap with nodes.

References in corpus (3)

• Meissner - London state in superconductors of rectangular cross-section in perpendicular magnetic field
• Absence of non-linear Meissner effect in YBa2Cu3O6.95
• Observation of a linear temperature dependence of the critical current density in a Ba_{0.63}K_{0.37}BiO_3 single crystal

Cited by in corpus (1)

• Persistence of small polarons into the superconducting phase of Ba${}_{1-x}$K${}_x$BiO${}_3$