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Limitation of electron mobility from hyperfine interaction in ultraclean quantum wells and topological insulators

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2016

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Tarasenko, Sergey A.

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https://doi.org/10.1103/PhysRevB.94.045309
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http://arxiv.org/abs/1508.07777v2

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Physical Review B. 2016, 94(4), 045309. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.94.045309

Zusammenfassung

The study of electron transport and scattering processes limiting electron mobility in high-quality semiconductor structures is central to solid-state electronics. Here, we uncover an unavoidable source of electron scattering which is caused by fluctuations of nuclear spins. We calculate the momentum relaxation time of electrons in quantum wells governed by the hyperfine interaction between electrons and nuclei and show that this time drastically depends on the spatial correlation of nuclear spins. Moreover, the scattering processes accompanied by a spin flip are a source of the backscattering of Dirac fermions at conducting surfaces of topological insulators.

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ISO 690TARASENKO, Sergey A., Guido BURKARD, 2016. Limitation of electron mobility from hyperfine interaction in ultraclean quantum wells and topological insulators. In: Physical Review B. 2016, 94(4), 045309. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.94.045309
BibTex
@article{Tarasenko2016Limit-35096,
  year={2016},
  doi={10.1103/PhysRevB.94.045309},
  title={Limitation of electron mobility from hyperfine interaction in ultraclean quantum wells and topological insulators},
  number={4},
  volume={94},
  issn={2469-9950},
  journal={Physical Review B},
  author={Tarasenko, Sergey A. and Burkard, Guido},
  note={Article Number: 045309}
}
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