Anomalous crossed Andreev reflection in mesoscopic superconducting ring hosting Majorana fermions
arXiv:1308.1192 · doi:10.1103/PhysRevB.89.035309
Abstract
We investigate the Majorana physics and its effect on the electron transport in the non-topological superconductor(NS)-topological superconductor(TS) double junctions of a ring geometry. We find that, depending on the ratio between the lengths of two topologically different regions and the localization lengths of the Majorana fermions formed between them, two completely different transport mechanisms are working: perfect crossed Andreev reflection (CAR) for the short NS region and perfect normal Andreev reflection for the short TS region. The difference is explained in terms of the topologically distinct properties of subgap states in the NS-TS double junction system, which have not been revealed so far. The exotic dependence of the CAR process on the magnetic flux threading the ring is uncovered and can be used to detect the Majorana fermions.
15 pages, 21 figures
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Cited by in corpus (6)
- Thermoelectrical detection of Majorana states
- Crossed Andreev effects in two-dimensional quantum Hall systems
- Tuning Pairing Amplitude and Spin-Triplet Texture by Curving Superconducting Nanostructures
- Effects of tilting the magnetic field in 1D Majorana nanowires
- Transfer matrix approach to the persistent current in hybrid normal-superconducting rings
- Aharonov-Bohm interference as a probe of Majorana fermions