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Quantum Hall edge s...
Quantum Hall edge states in topological insulator nanoribbons
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- Pertsova, Anna (författare)
- KTH,Linnéuniversitetet,Institutionen för fysik och elektroteknik (IFE),KTH Royal Inst Technol ; Stockholm University,Nordic Institute for Theoretical Physics NORDITA,Linnæus University, Sweden
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- Canali, Carlo M. (författare)
- Linnéuniversitetet,Institutionen för fysik och elektroteknik (IFE)
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- MacDonald, A. H. (författare)
- Univ Texas Austin, USA
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(creator_code:org_t)
- American Physical Society, 2016
- 2016
- Engelska.
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Ingår i: Physical Review B. - : American Physical Society. - 2469-9950 .- 2469-9969. ; 94:12
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We present a microscopic theory of the chiral one-dimensional electron gas system localized on the sidewalls of magnetically doped Bi2Se3-family topological insulator nanoribbons in the quantum anomalous Hall effect (QAHE) regime. Our theory is based on a simple continuum model of sidewall states whose parameters are extracted from detailed ribbon and film geometry tight-binding model calculations. In contrast to the familiar case of the quantum Hall effect in semiconductor quantum wells, the number of microscopic chiral channels depends simply and systematically on the ribbon thickness and on the position of the Fermi level within the surface state gap. We use our theory to interpret recent transport experiments that exhibit nonzero longitudinal resistance in samples with accurately quantized Hall conductances.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- Fysik
- Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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