Theory of giant and nil proximity effects in cuprate semiconductors

Abstract

A number of observations point to the possibility that high-Tc cuprate superconductors may not be conventional Bardeen-Cooper-Schrieffer (BCS) superconductors, but rather derive from the Bose-Einstein condensation (BEC) of real-space pairs, which are mobile small bipolarons. A solution of the Gross-Pitaevskii equation describing bose-condensate tunnelling into a cuprate semiconductor is analytically found. It accounts qualitatively and quantitatively for nil and giant proximity effects discovered experimentally in cuprates.

4 pages, 3 figures

Cited by in corpus (6)

• The Meissner effect in a strongly underdoped cuprate above its critical temperature
• Competition between Superconductivity and Charge Density Waves: the Role of Disorder
• Low-temperature proximity effect in clean metals
• Supercurrent transferring through c-axis cuprate Josephson junctions with thick normal-metal-bridge
• Bipolaronic proximity and other unconventional effects in cuprate superconductors
• Basic principle of superconductivity