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- W2983173632 abstract "We present an effective low-energy theory of electron-phonon coupling effects for clean cylindrical topological insulator nanowires. Acoustic phonons are modelled by isotropic elastic continuum theory with stress-free boundary conditions. We take into account the deformation potential coupling between phonons and helical surface Dirac fermions, and also include electron-electron interactions within the bosonization approach. For half-integer values of the magnetic flux $Phi_B$ along the wire, the low-energy theory admits an exact solution since a topological protection mechanism then rules out phonon-induced $2k_F$-backscattering processes. We determine the zero-temperature phase diagram and identify a regime dominated by superconducting pairing of surface states. As example, we consider the phase diagram of HgTe nanowires. We also determine the phonon-induced electrical resistivity, where we find a quadratic dependence on the flux deviation $deltaPhi_B$ from the nearest half-integer value." @default.
- W2983173632 created "2019-11-22" @default.
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- W2983173632 date "2020-01-03" @default.
- W2983173632 modified "2023-09-24" @default.
- W2983173632 title "Phase diagram and phonon-induced backscattering in topological insulator nanowires" @default.
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- W2983173632 doi "https://doi.org/10.1103/physrevb.101.045402" @default.
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