The DOI matches its Crossref record; 21 of the 21 references it cites were found in a registry or an index.
Two-dimensional surface charge transport in topological insulators
Open accessAbstract
We construct a theory of charge transport by the surface states of topological insulators in three dimensions. The focus is on the experimentally relevant case when the Fermi energy ${\ensuremath{\epsilon}}_{F}$ and transport scattering time $\ensuremath{\tau}$ satisfy ${\ensuremath{\epsilon}}_{F}\ensuremath{\tau}/\ensuremath{\hbar}⪢1$ but ${\ensuremath{\epsilon}}_{F}$ lies below the bottom of the conduction band. Our theory is based on the spin density matrix and takes the quantum Liouville equation as its starting point. The scattering term is determined to linear order in the impurity density ${n}_{i}$ and explicitly accounts for the absence of backscattering while screening is included in the random-phase approximation. The main contribution to the conductivity is $\ensuremath{\propto}{n}_{i}^{\ensuremath{-}1}$ and has different carrier density dependencies for different forms of scattering while an additional contribution is independent of ${n}_{i}$. The dominant scattering angles can be inferred by studying the ratio of the transport time to the Bloch lifetime as a function of the Wigner-Seitz radius ${r}_{s}$. The current generates a spin polarization that could provide a smoking-gun signature of surface state transport. We also discuss the effect on the surface states of adding metallic contacts.
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Cites
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Cited by
Spintronics and pseudospintronics in graphene and topological insulators
Pesin, D., & MacDonald, A. H. (2012) · Nature Materials · doi:10.1038/nmat3305 · Cited by 1,077
Li, C. H., van ‘t Erve, O. M. J., Robinson, J. T., Liu, Y., Li, L., & Jonker, B. T. (2014) · Nature Nanotechnology · doi:10.1038/nnano.2014.16 · Cited by 465
Surface conduction of topological Dirac electrons in bulk insulating Bi2Se3
Kim, D., Cho, S., Butch, N. P., Syers, P., Kirshenbaum, K., Adam, S., Paglione, J., & Fuhrer, M. S. (2012) · Nature Physics · doi:10.1038/nphys2286 · Cited by 379
Poncé, S., Li, W., Reichardt, S., & Giustino, F. (2020) · Reports on Progress in Physics · doi:10.1088/1361-6633/ab6a43 · Cited by 357
Observation of Dirac Holes and Electrons in a Topological Insulator
Taskin, A. A., Ren, Z., Sasaki, S., Segawa, K., & Ando, Y. (2011) · Physical Review Letters · doi:10.1103/physrevlett.107.016801 · Cited by 345
Metadata
- Authors
- Culcer, D., Hwang, E. H., Stanescu, T. D., & Das Sarma, S.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2010-10-29
- Volume
- 82
- Issue
- 15
- ISSN
- 1098-0121 (ISSN-L)
- 1550-235X
- OpenAlex
- W1964257960
- Cited by
- 184
- References
- 21
- FWCI
- 8.27
- Type
- journal article
- Language
- en
- Open access
- green
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