Temperature dependence of the magnetic penetration depth in BKBO superconductor

Details Temperature dependence of the magnetic penetration depth in BKBO superconductor Temperature dependence of the magnetic penetration depth in BKBO superconductor

2003-12-12

arxiv.org/abs/cond-mat/0312334v1

Physica C 403 (3), 200-202 (2004)

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1016/j.physc.2003.12.007

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.

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