Tunneling characteristics of a chain of Majorana bound states

By K. Flensberg. 2010

323 citations recorded by the source corpus.

We consider theoretically tunneling characteristic of a junction between a normal metal and a chain of coupled Majorana bound states generated at crossings between topological and non-topological superconducting sections, as a result of, for example, disorder in nanowires. While an isolated Majorana state supports a resonant Andreev process, yielding a zero bias differential conductance peak of height 2e^2/h, the situation with more coupled Majorana states is distinctively different with both zeros and 2e^2/h peaks in the differential conductance. We derive a general expression for the current between a normal metal and a network of coupled Majorana bound states and describe the differential conductance spectra for a generic set of situations, including regular, disordered, and infinite chains of bound states.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/d8db4d2b0a9bb5e28ef27d39dc62374e36c34a99

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In Atomic and Molecular Physics, and Optics

In Materials Chemistry

Citations in the corpus

Topological superconductors: a review (2016, methodology): “If the single Majorana zero mode is coupled with another Majorana zero mode at the other end, the tunneling conductance is modified to [255],”
Search for Majorana Fermions in Superconductors (2011, background): “troscopy is that the zero-bias peak may be obscured by resonances from subgap states at nonzero energy [90, 91].”