Giant Rashba spin splitting in Bi2Se3: Tl

Handle URI:
http://hdl.handle.net/10754/575605
Title:
Giant Rashba spin splitting in Bi2Se3: Tl
Authors:
Singh, Nirpendra ( 0000-0001-8043-0403 ) ; Saeed, Yasir ( 0000-0003-3080-7385 ) ; Schwingenschlögl, Udo ( 0000-0003-4179-7231 )
Abstract:
First-principles calculations are employed to demonstrate a giant Rashba spin splitting in Bi2Se3:Tl. Biaxial tensile and compressive strain is used to tune the splitting by modifying the potential gradient. The band gap is found to increase under compression and decreases under tension, whereas the dependence of the Rashba spin splitting on the strain is the opposite. Large values of αR = 1.57 eV Å at the bottom of the conduction band (electrons) and αR = 3.34 eV Å at the top of the valence band (holes) are obtained without strain. These values can be further enhanced to αR = 1.83 eV Å and αR = 3.64 eV Å, respectively, by 2% tensile strain. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Computational Physics and Materials Science (CPMS)
Publisher:
Wiley-Blackwell
Journal:
physica status solidi (RRL) - Rapid Research Letters
Issue Date:
25-Jul-2014
DOI:
10.1002/pssr.201409183
Type:
Article
ISSN:
18626254
Sponsors:
Research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST). We thank KAUST research computing for supplying the computational resources for this study. N.S. acknowledges SABIC for financial support.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Computational Physics and Materials Science (CPMS)

Full metadata record

DC FieldValue Language
dc.contributor.authorSingh, Nirpendraen
dc.contributor.authorSaeed, Yasiren
dc.contributor.authorSchwingenschlögl, Udoen
dc.date.accessioned2015-08-24T08:34:01Zen
dc.date.available2015-08-24T08:34:01Zen
dc.date.issued2014-07-25en
dc.identifier.issn18626254en
dc.identifier.doi10.1002/pssr.201409183en
dc.identifier.urihttp://hdl.handle.net/10754/575605en
dc.description.abstractFirst-principles calculations are employed to demonstrate a giant Rashba spin splitting in Bi2Se3:Tl. Biaxial tensile and compressive strain is used to tune the splitting by modifying the potential gradient. The band gap is found to increase under compression and decreases under tension, whereas the dependence of the Rashba spin splitting on the strain is the opposite. Large values of αR = 1.57 eV Å at the bottom of the conduction band (electrons) and αR = 3.34 eV Å at the top of the valence band (holes) are obtained without strain. These values can be further enhanced to αR = 1.83 eV Å and αR = 3.64 eV Å, respectively, by 2% tensile strain. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.en
dc.description.sponsorshipResearch reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST). We thank KAUST research computing for supplying the computational resources for this study. N.S. acknowledges SABIC for financial support.en
dc.publisherWiley-Blackwellen
dc.subjectBand structuresen
dc.subjectBi2Se3:Tlen
dc.subjectFirst-principles calculationsen
dc.subjectRashba spin splittingen
dc.subjectSemiconductorsen
dc.subjectTensile strainen
dc.titleGiant Rashba spin splitting in Bi2Se3: Tlen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentComputational Physics and Materials Science (CPMS)en
dc.identifier.journalphysica status solidi (RRL) - Rapid Research Lettersen
kaust.authorSingh, Nirpendraen
kaust.authorSaeed, Yasiren
kaust.authorSchwingenschlögl, Udoen
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