| Topological quantization in units of the fine structure constant. | |
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MedLine Citation:
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PMID: 21230994 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Fundamental topological phenomena in condensed matter physics are associated with a quantized electromagnetic response in units of fundamental constants. Recently, it has been predicted theoretically that the time-reversal invariant topological insulator in three dimensions exhibits a topological magnetoelectric effect quantized in units of the fine structure constant α=e²/ℏc. In this Letter, we propose an optical experiment to directly measure this topological quantization phenomenon, independent of material details. Our proposal also provides a way to measure the half-quantized Hall conductances on the two surfaces of the topological insulator independently of each other. |
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Authors:
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Joseph Maciejko; Xiao-Liang Qi; H Dennis Drew; Shou-Cheng Zhang |
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Publication Detail:
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Type: Journal Article Date: 2010-10-12 |
Journal Detail:
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Title: Physical review letters Volume: 105 ISSN: 1079-7114 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2011-01-14 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
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Languages: eng Pagination: 166803 Citation Subset: - |
Affiliation:
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Department of Physics, Stanford University, Stanford, California 94305, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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