Zero-bias conductance quantization in a normal / superconducting junction of nano wire
نویسندگان
چکیده
We discuss a strong relationship between Majorana fermions and odd-frequency Cooper pairs which appear at a disordered normal nano wire attached to a topologically nontrivial superconducting one. The zero-bias differential conductance in a normal / superconducting nano wire junctions is quantized at 2e/h irrespective of degree of disorder, length of disordered segment, and random realization of disordered potential. Such behaviors are exactly the same as those in the anomalous proximity effect of px-wave spin-triplet superconductors. We show that odd-frequency Cooper pairs assist the unusual transport properties.
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