One-dimensional Surface Bound States in d-wave Superconductors

2000/10/28 by Dirk K. Morr, Eugene Demler, Morr, Dirk K. +1
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con) #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.48550/arxiv.cond-mat/0010460

4 pages, figures 2 and 3 are in color

arxiv created 2000/10/28 · openalex publication_date 2000/10/28 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present an \it exact quantum theory for the bound states in the vicinity of an edge or a line of impurities in a d_x²-y² superconductor. For a (110)-surface we show that a finite dispersion of the one dimensional band of bound states leads to a two peak structure in the density of states (DOS). We study the effect of an applied magnetic field and a subdominant id_xy order parameter on the DOS and discuss the implications of our results for tunneling experiments.

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