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Type-I superconductivity in ScGa3 and LuGa3 single crystals | | E. Svanidze
; E. Morosan
; | | Date: |
30 May 2012 | | Abstract: | We present evidence of type-I superconductivity in single crystals of ScGa3
and LuGa3, from magnetization, specific heat, and resistivity measurements: low
critical temperatures Tc = 2.1-2.2 K; field-induced secondto first-order phase
transition in the specific heat, critical fields less than 240 Oe; and low
Ginzburg-Landau coefficients {kappa} approx 0.23 and 0.30 for ScGa3 and LuGa3,
respectively, are all traits of a type-I superconducting ground state. These
observations render ScGa3 and LuGa3 two of only several type-I superconducting
compounds, with most other superconductors being type II (compounds and alloys)
or type I (elemental metals and metaloids). | | Source: | arXiv, 1205.6836 | | Services: | Forum | Review | PDF | Favorites | |
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