Unusual temperature dependence of the London penetration depth in all-organic beta ''-(ET)(2)SF5CH2CF2SO3 single crystals - art. no. 052506

摘要

The temperature dependence of the in-plane, lambda (parallel to)(T), and interplane, lambda (perpendicular to)(T). London penetration depth was measured in the metal-free all-organic superconductor beta"-(ET)(2)SF5CH2CF2SO3 (T(c)approximate to5.2 K). Delta lambda (parallel to)(T)proportional toT(3) up to 0.5 T-c, a power law previously observed only in materials thought to be p-wave superconductors. lambda (perpendicular to), is larger than the sample dimensions down to the lowest temperatures (0.35 K), implying an anisotropy of lambda (perpendicular to)/lambda (parallel to)approximate to 400-800. [References: 23]