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Title

Hexagonally deformed fermi surface of the 3D topological insulator Bi2Se3

AuthorsMiyamoto, Koji; Kimura, A.; Krasovskii, E. E.; Chulkov, Eugene V. ; Shimada, K.; Namatame, H.; Taniguchi, M.
Issue Date2010
PublisherAmerican Physical Society
CitationPhysical Review Letters 105(7): 076802 (2010)
AbstractA hexagonal deformation of the Fermi surface of Bi2Se3 has been for the first time observed by angle-resolved photoemission spectroscopy. This is in contrast to the general belief that Bi2Se3 possesses an ideal Dirac cone. The hexagonal shape is found to disappear near the Dirac node, which would protect the surface state electrons from backscattering. It is also demonstrated that the Fermi energy of naturally electron-doped Bi2Se3 can be tuned by 1% Mg doping in order to realize the quantum topological transport.
Description4 páginas, 3 figuras.-- PACS numbers: 73.20.-r, 79.60.-i.-- et al.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.105.076802
URIhttp://hdl.handle.net/10261/44276
DOI10.1103/PhysRevLett.105.076802
ISSN0031-9007
E-ISSN1079-7114
Appears in Collections:(CFM) Artículos
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