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Condensed Matter and Statistical Physics Journal Club

Date: July 27, 2009
Title: "Type-1.5 Superconductivity."
Speaker: Argha Banerjee
Reference: (1) Semi-Meissner state and neither type-I nor type-II superconductivity in multicomponent superconductors, Egor Babaev and Martin Speight, Phys. Rev. B 72, 180502 (2005), (2) Type-1.5 Superconductivity, Moshchalkov, V V. et. al., Physical Review Letters vol:102, 117001 (2009)
Abstract: In the first paper the authors studied a model of two compponent superconductor. They argue that depending on parameters of the model, certain vortex state appears which is different form familiar voretx states of type-II superconductor. The second paper reports observation of this new vortex state in MgB2 samples.