2006/08/01 by M. Titov, Markus Müller, M. Mueller +2 · 19 citations
Physics and Astronomy · #Andreev reflection #Condensed matter physics #Conductance #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum many-body systems #Quantum mechanics #Reflection (computer programming) #Renormalization #Renormalization group #Scaling #Scattering #Superconductivity #cond-mat.mes-hall #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.97.237006
published in Physical Review Letters 97(23), 237006 (American Physical Society) · 4 pages, 2 figures
arxiv created 2006/08/01 · openalex publication_date 2006/12/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We analyze the charge transport between a one-dimensional weakly interacting electron gas and a superconductor within the scaling approach in the basis of scattering states. We derive the renormalization group equations, which fully account for the intrinsic energy dependence due to Andreev reflection. A strong renormalization of the corresponding reflection phase is predicted even for a perfectly transparent metal-superconductor interface. The interaction-induced suppression of the Andreev conductance is shown to be highly sensitive to the normal-state resistance, providing a possible explanation of experiments with carbon-nanotube/superconductor junctions by Morpurgo et al. [Science 286, 263 (1999)].