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dc.contributor.authorKleftogiannis, Ioannisen_US
dc.contributor.authorAmanatidis, Iliasen_US
dc.date.accessioned2016-03-28T00:04:24Z-
dc.date.available2016-03-28T00:04:24Z-
dc.date.issued2016-02-03en_US
dc.identifier.issn0953-8984en_US
dc.identifier.urihttp://dx.doi.org/10.1088/0953-8984/28/4/045305en_US
dc.identifier.urihttp://hdl.handle.net/11536/129636-
dc.description.abstractWe investigate numerically the spin properties of electrons in flakes made of materials described by the Dirac equation, in the presence of intrinsic spin-orbit coupling (SOC). We show that electrons flowing along the borders of flakes via edge states become helically spin-polarized for strong SOC, for materials with and without a gap at the Fermi energy, corresponding to the massive and massless Dirac equation respectively. The helically spin-polarized electrons create spin-resolved transport, controlled by the flake\'s geometry in a multi-terminal device setup. A simple analytical model containing the basic ingredients of the problem is introduced to get an insight into the helical mechanism, along with our numerical results which are based on an effective tight-binding model.en_US
dc.language.isoen_USen_US
dc.subjectDirac materialsen_US
dc.subjectquantum transporten_US
dc.subjectspin-orbit couplingen_US
dc.subjectedge statesen_US
dc.titleGeometrical spin manipulation in Dirac flakesen_US
dc.typeArticleen_US
dc.identifier.doi10.1088/0953-8984/28/4/045305en_US
dc.identifier.journalJOURNAL OF PHYSICS-CONDENSED MATTERen_US
dc.citation.volume28en_US
dc.contributor.department電子物理學系zh_TW
dc.contributor.departmentDepartment of Electrophysicsen_US
dc.identifier.wosnumberWOS:000368762900010en_US
dc.citation.woscount0en_US
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