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Jin, Hosub
Quantum Materials Design Lab
Research Interests
  • Spin-orbit coupling, electron-correlation, topological quantum phases

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Topological and magnetic phase transitions in Bi2Se3 thin films with magnetic impurities

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dc.contributor.author Jin, Hosub ko
dc.contributor.author Im, Jino ko
dc.contributor.author Freeman, Arthur J ko
dc.date.available 2015-08-11T00:07:56Z -
dc.date.created 2015-07-29 ko
dc.date.issued 2011-10 -
dc.identifier.citation PHYSICAL REVIEW B, v.84, no., pp.134408 - ko
dc.identifier.issn 2469-9950 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/13408 -
dc.identifier.uri http://journals.aps.org/prb/abstract/10.1103/PhysRevB.84.134408 ko
dc.description.abstract When topological insulators meet broken time-reversal symmetry, they bring forth many novel phenomena, such as topological magnetoelectric, half-quantum Hall, and quantum anomalous Hall effects. From the well-known quantum spin Hall state in Bi2Se3 thin films, we predict various topological and magnetic phases when the time-reversal symmetry is broken by magnetic ion doping. As the magnetic ion density increases, the system undergoes successive topological or magnetic phase transitions due to variation of the exchange field and the spin-orbit coupling. In order to identify the topological phases, we vary the spin-orbit coupling strength from zero to the original value of the system and count the number of band crossings between the conduction and valence bands, which directly indicates the change of the topological phase. This method provides a physically intuitive and abstract view to figure out the topological character of each phase and the phase transitions between them. ko
dc.description.statementofresponsibility open -
dc.language ENG ko
dc.publisher AMER PHYSICAL SOC ko
dc.subject SINGLE DIRAC CONE ko
dc.subject SURFACE-STATES ko
dc.subject INSULATORS ko
dc.title Topological and magnetic phase transitions in Bi2Se3 thin films with magnetic impurities ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-80155212658 ko
dc.identifier.wosid 000295794300002 ko
dc.type.rims ART ko
dc.description.wostc 12 *
dc.description.scopustc 11 *
dc.date.tcdate 2015-12-28 *
dc.date.scptcdate 2015-11-04 *
dc.identifier.doi 10.1103/PhysRevB.84.134408 ko
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