Transport signatures of interacting fermions in quasi-one-dimensional topological superconductors

Article

关键词: 2-CHANNEL KONDO MODEL;    MAJORANA FERMIONS;    SEMICONDUCTOR NANOWIRE;    MESOSCOPIC SYSTEMS;    FORMULA;    STATES;   

DOI  :  10.1103/PhysRevB.93.125433

来源: SCIE

【 摘 要 】

A topological superconducting wire with an effective time-reversal symmetry is known to have a Z(8) topological classification in the presence of interactions. The topological index vertical bar n vertical bar <= 4 counts the number of Majorana end states, negative n corresponding to end states that are odd under time reversal. If such a wire is weakly coupled to a normal-metal lead, interactions induce a Kondo-like correlated state if vertical bar n vertical bar = 4. We show that the Kondo-like state manifests itself in an anomalous temperature dependence of the zero-bias conductance and by an anomalous Fano factor for the zero-temperature normally reflected current at finite bias. We also consider the splitting of the effective Kondo resonance for weak symmetry-breaking perturbations.

【 授权许可】

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