Scaling theory of phase-coherent metallic conductors

作者: A. M. S. Macêdo

DOI: 10.1103/PHYSREVB.66.033306

关键词: CrossoverElectrical conductorNetwork analysisConjectureConductorNon-linear sigma modelMetalPhysicsQuantum mechanicsPhase (waves)

摘要: We present a scaling theory for describing the smooth crossover from ballistic to diffusive transport in phase-coherent metallic conductors. The confirms recent conjecture by Beenakker [Rev. Mod. Phys. 69, 731 (1997)], and represents substantial improvement two-terminal version of Nazarov's circuit [Phys. Rev. Lett. 73, 134 (1994); 1420 (1994)]. In addition, our approach allows explicit inclusion interfaces arbitrary transparency, which are described using supersymmetric nonlinear σ model. problem two identical barriers separated conductor is solved exactly, expressions both normal Andreev conductances presented.

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