Publikation:

Reflectionless transport of surface Dirac fermions on topological insulators with induced ferromagnetic domain walls

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2012

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http://nbn-resolving.de/urn:nbn:de:bsz:352-224846
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https://doi.org/10.1103/PhysRevB.86.035151
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Physical Review B. 2012, 86(3). ISSN 1098-0121. eISSN 1095-3795. Available under: doi: 10.1103/PhysRevB.86.035151

Zusammenfassung

The properties of surface Dirac fermions on a three-dimensional topological insulator in proximity to amagnetic insulator with spatially textured magnetization are considered. We present an exact analytical treatment of the domain-wall resistance and the spectrum for an extended generic domain wall with in-plane and out-of-plane magnetizations. In the latter case, we find oscillations in the domain-wall resistance as a function of the wall width and for certain widths a complete absence of reflections for all incoming momenta. The surprising occurrence of oscillations and the reflectionless potentials can be related to a supersymmetry of the surface Dirac Hamiltonian combined with the domain-wall profile.

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ISO 690WICKLES, Christian, Wolfgang BELZIG, 2012. Reflectionless transport of surface Dirac fermions on topological insulators with induced ferromagnetic domain walls. In: Physical Review B. 2012, 86(3). ISSN 1098-0121. eISSN 1095-3795. Available under: doi: 10.1103/PhysRevB.86.035151
BibTex
@article{Wickles2012Refle-22484,
  year={2012},
  doi={10.1103/PhysRevB.86.035151},
  title={Reflectionless transport of surface Dirac fermions on topological insulators with induced ferromagnetic domain walls},
  number={3},
  volume={86},
  issn={1098-0121},
  journal={Physical Review B},
  author={Wickles, Christian and Belzig, Wolfgang}
}
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