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28 March 2024
 
  » arxiv » 1205.6836

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Type-I superconductivity in ScGa3 and LuGa3 single crystals
E. Svanidze ; E. Morosan ;
Date 30 May 2012
AbstractWe 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
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