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Diffusion of objects in superconductors: Crossover from classical to quantum behaviour on suppression of infrared couplings

Journal Article


Abstract


  • It is shown how the onset of superconductivity in a metal will allow objects moving in the metal to make the entire transition from incoherent diffusion to quantum coherent motion, in an experimentally controllable way, as the gap suppresses the infrared divergent coupling to electrons. An observable measure of the crossover is the diffusion constant D(T) of the object, which the authors calculate in detail. This will allow a stringent experimental test of the understanding of this transition.

Publication Date


  • 1992

Citation


  • Zhang, C., & Stamp, P. C. E. (1992). Diffusion of objects in superconductors: Crossover from classical to quantum behaviour on suppression of infrared couplings. Journal of Physics: Condensed Matter, 4(42). doi:10.1088/0953-8984/4/42/002

Scopus Eid


  • 2-s2.0-36149036626

Volume


  • 4

Issue


  • 42

Abstract


  • It is shown how the onset of superconductivity in a metal will allow objects moving in the metal to make the entire transition from incoherent diffusion to quantum coherent motion, in an experimentally controllable way, as the gap suppresses the infrared divergent coupling to electrons. An observable measure of the crossover is the diffusion constant D(T) of the object, which the authors calculate in detail. This will allow a stringent experimental test of the understanding of this transition.

Publication Date


  • 1992

Citation


  • Zhang, C., & Stamp, P. C. E. (1992). Diffusion of objects in superconductors: Crossover from classical to quantum behaviour on suppression of infrared couplings. Journal of Physics: Condensed Matter, 4(42). doi:10.1088/0953-8984/4/42/002

Scopus Eid


  • 2-s2.0-36149036626

Volume


  • 4

Issue


  • 42