• Corpus ID: 119327143

Magnetic-field orientation dependence of transport properties of topologically superconducting wire

@article{Valkov2017MagneticfieldOD,
  title={Magnetic-field orientation dependence of transport properties of topologically superconducting wire},
  author={Valery V. Val'kov and S V Aksenov},
  journal={arXiv: Mesoscale and Nanoscale Physics},
  year={2017}
}

• V. V. Val'kov, S. Aksenov
• Published 7 March 2017
• Physics
• arXiv: Mesoscale and Nanoscale Physics

We present the study of transport properties of a superconducting wire with strong Rashba spin-orbit coupling for different orientations of an external magnetic field. Using the nonequilibrium Green's functions in the tight-binding approach the crucial impact of the relative alignment of lead magnetization and the Majorana bound state (MBS) spin polarization on the low-bias conductance and shot noise is presented. Depending on this factor the transport regime can effectively vary from symmetric to extremely asymmetric. In the last situation the current-symmetry breaking, the suppression of the MBS-assisted conductance and specific Fano factor behavior lead to current-switch effect. The persistence of these features under the presence of diagonal disorder and phenomenologically modeled g-factor anisotropy is demonstrated. In the case of paramagnetic leads the MBS spin polarization gives rise to the spin-filtering effect depending on the magnetic-field orientation.