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  • Title: Anomalous Andreev bound state in noncentrosymmetric superconductors.
    Author: Tanaka Y, Mizuno Y, Yokoyama T, Yada K, Sato M.
    Journal: Phys Rev Lett; 2010 Aug 27; 105(9):097002. PubMed ID: 20868185.
    Abstract:
    We study edge states of noncentrosymmetric superconductors where spin-singlet d-wave pairing mixes with spin-triplet p (or f)-wave one by spin-orbit coupling. For d(xy)-wave pairing, the obtained Andreev bound state has an anomalous dispersion as compared to conventional helical edge modes. A unique topologically protected time-reversal invariant Majorana bound state appears at the edge. The charge conductance in the noncentrosymmetric superconductor junctions reflects the anomalous structures of the dispersions, particularly the time-reversal invariant Majorana bound state is manifested as a zero bias conductance peak.
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