The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.
Thickness-Independent Transport Channels in Topological InsulatorBi2Se3Thin Films
Open accessAbstract
With high quality topological insulator ${\mathrm{Bi}}_{2}{\mathrm{Se}}_{3}$ thin films, we report thickness-independent transport properties over wide thickness ranges. Conductance remained nominally constant as the sample thickness changed from 256 to $\ensuremath{\sim}8\text{ }\text{ }\mathrm{QL}$ (where QL refers to quintuple layer, $1\text{ }\text{ }\mathrm{QL}\ensuremath{\approx}1\text{ }\text{ }\mathrm{nm}$). Two surface channels of very different behaviors were identified. The sheet carrier density of one channel remained constant at $\ensuremath{\sim}3.0\ifmmode\times\else\texttimes\fi{}{10}^{13}\text{ }\text{ }{\mathrm{cm}}^{\ensuremath{-}2}$ down to 2 QL, while the other, which exhibited quantum oscillations, remained constant at $\ensuremath{\sim}8\ifmmode\times\else\texttimes\fi{}{10}^{12}\text{ }\text{ }{\mathrm{cm}}^{\ensuremath{-}2}$ only down to $\ensuremath{\sim}8\text{ }\text{ }\mathrm{QL}$. The weak antilocalization parameters also exhibited similar thickness independence. These two channels are most consistent with the topological surface states and the surface accumulation layers, respectively.
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Cites
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Cited by
Topological Insulator Materials
Ando, Y. (2013) · Journal of the Physical Society of Japan · doi:10.7566/jpsj.82.102001 · Cited by 1,789
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Ultrafast photocurrents at the surface of the three-dimensional topological insulator Bi2Se3
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(2012) · doi:10.1103/physrevlett.109.186403 · Cited by 211
Self-citation
Metadata
- Authors
- Bansal, N., Kim, Y. S., Brahlek, M., Edrey, E., & Oh, S.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2012-09-12
- Volume
- 109
- Issue
- 11
- Pages
- 116804-116804
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2014641563
- Cited by
- 364
- References
- 27
- FWCI
- 17.94
- Type
- journal article
- Language
- en
- Open access
- green
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