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- W2769907728 abstract "We analyze the effects of electron-electron interactions and disorder on a Rashba double-nanowire setup coupled to an s-wave superconductor, which has been recently proposed as a versatile platform to generate Kramers pairs of Majorana bound states in the absence of magnetic fields. We identify the regime of parameters for which these Kramers pairs are stable against interaction and disorder effects. We use bosonization, perturbative renormalization group, and replica techniques to derive the flow equations for various parameters of the model and evaluate the corresponding phase diagram with topological and disorder-dominated phases. We confirm aforementioned results by considering a more microscopic approach which starts from the tunneling Hamiltonian between the three-dimensional s-wave superconductor and the nanowires. We find again that the interaction drives the system into the topological phase and, as the strength of the source term coming from the tunneling Hamiltonian increases, strong electron-electron interactions are required to reach the topological phase." @default.
- W2769907728 created "2017-12-04" @default.
- W2769907728 creator A5003711223 @default.
- W2769907728 creator A5010879789 @default.
- W2769907728 creator A5014009225 @default.
- W2769907728 creator A5041982379 @default.
- W2769907728 creator A5056531363 @default.
- W2769907728 date "2018-01-16" @default.
- W2769907728 modified "2023-09-24" @default.
- W2769907728 title "Majorana Kramers pairs in Rashba double nanowires with interactions and disorder" @default.
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