Time-reversal-invariant topological superconductivity in one and two dimensions
Sign Up to like & getrecommendations! Published in 2019 at "Physics Reports"
DOI: 10.1016/j.physrep.2019.08.002
Abstract: Abstract A topological superconductor is characterized by having a pairing gap in the bulk and gapless self-hermitian Majorana modes at its boundary. In one dimension, these are zero-energy modes bound to the ends, while in… read more here.
Keywords: superconductivity; time reversal; time; majorana modes ... See more keywords
Non-Hermitian Majorana modes protect degenerate steady states
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.100.085110
Abstract: We introduce non-Hermitian generalizations of Majorana zero modes (MZMs) which appear in the topological phase of a weakly dissipative Kitaev chain coupled to a Markovian bath. Notably, the presence of MZMs ensures that the steady… read more here.
Keywords: hermitian majorana; non hermitian; degenerate steady; majorana modes ... See more keywords
Majorana modes in multiband superconducting quantum wires
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.101.094502
Abstract: We calculate analytically the spectrum of the Andreev bound states in a half-infinite superconducting wire with an arbitrary number of bands crossing the chemical potential. The normal state of the wire is assumed to have… read more here.
Keywords: quantum wires; multiband superconducting; modes multiband; majorana modes ... See more keywords
Nonlocality of Majorana modes in hybrid nanowires
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DOI: 10.1103/physrevb.98.085125
Abstract: The nonlocal character of Majorana zero modes is a key feature for topological protection of Majorana qubits, and distinguishes separated Majorana bound states from localized Andreev modes. Applying recent theoretical results on the coupling of… read more here.
Keywords: majorana modes; modes hybrid; hybrid nanowires; nonlocality majorana ... See more keywords
Superconducting states and Majorana modes in transition-metal dichalcogenides under inhomogeneous strain
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.085106
Abstract: We study the effect of inhomogeneous strain on transition-metal dichalcogenides with a large intrinsic gap in their spectrum. It is found that, by tuning the chemical potential, superconductivity can preserve within the strain-induced discrete pseudo… read more here.
Keywords: transition metal; strain; majorana modes; inhomogeneous strain ... See more keywords
Absence of evidence for chiral Majorana modes in quantum anomalous Hall-superconductor devices
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DOI: 10.1126/science.aax6361
Abstract: Looking for chiral Majoranas Chiral Majorana modes have been predicted to exist in heterostructures consisting of a quantum anomalous Hall insulator and a superconductor. Kayyalha et al. fabricated more than 30 such samples and used… read more here.
Keywords: majorana modes; anomalous hall; chiral majorana; quantum anomalous ... See more keywords