Bojun Yan | Brown University (original) (raw)
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Pachhunga University College( A Only Constitutent College of Mizoram Central University)
Université de Sherbrooke (University of Sherbrooke)
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Papers by Bojun Yan
A variational approach is used to study the zero-temperature phase transition of two-band granula... more A variational approach is used to study the zero-temperature phase transition of two-band granular superconducting films. For s+(-) superconductors with strong enough disorder, we show the plausible existence of a metallic phase between the superconducting and insulator phases which is absent in normal single band granular superconducting films. We propose that the metallic phase may be observed in granular films of pnictide superconductors. Novel possibilities such as charge 2e metal and "topological metal" are also discussed.
A variational approach is used to study the zero-temperature phase transition of two-band granula... more A variational approach is used to study the zero-temperature phase transition of two-band granular superconducting films. For s+(-) superconductors with strong enough disorder, we show the plausible existence of a metallic phase between the superconducting and insulator phases which is absent in normal single band granular superconducting films. We propose that the metallic phase may be observed in granular films of pnictide superconductors. Novel possibilities such as charge 2e metal and "topological metal" are also discussed.