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Article: Anisotropic hole spins in single and coupled self-assembled quantum dots

TitleAnisotropic hole spins in single and coupled self-assembled quantum dots
Authors
Issue Date2010
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B: Condensed Matter and Materials Physics, 2010, v. 82 n. 7, article no. 073308 How to Cite?
AbstractAnisotropy of hole spins in single and coupled self-assembled InAs/GaAs quantum dots is studied theoretically by means of an effective bond-orbital method. Compared with isotropic electron spins within the growth plane, it is found that the hole spins, although with much smaller positive g factors, can be highly anisotropic in single quantum dots. It is shown that the in-plane anisotropy of the hole spins can even reverse its sign as the height of the dots varies. In vertically coupled quantum dots, the in-plane hole g factors become comparable to the electrons, almost one order of magnitude larger than those in the single dots. Our result agrees qualitatively with the recent experiment [S. A. Crooker et al., Phys. Rev. Lett. 104, 036601 (2010)].
Persistent Identifierhttp://hdl.handle.net/10722/129345
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID
Funding AgencyGrant Number
NSFC10774025
60876087
MOST of China2006CB921506
STCSM08jc14019
Funding Information:

This work is supported by the NSFC (Grants No. 10774025 and No. 60876087), the 973 project of MOST of China (Grant No. 2006CB921506), the STCSM (Grant No. 08jc14019)

 

DC FieldValueLanguage
dc.contributor.authorSheng, Wen_US
dc.contributor.authorWang, Jen_US
dc.date.accessioned2010-12-23T08:35:41Z-
dc.date.available2010-12-23T08:35:41Z-
dc.date.issued2010en_US
dc.identifier.citationPhysical Review B: Condensed Matter and Materials Physics, 2010, v. 82 n. 7, article no. 073308en_US
dc.identifier.issn1098-0121-
dc.identifier.urihttp://hdl.handle.net/10722/129345-
dc.description.abstractAnisotropy of hole spins in single and coupled self-assembled InAs/GaAs quantum dots is studied theoretically by means of an effective bond-orbital method. Compared with isotropic electron spins within the growth plane, it is found that the hole spins, although with much smaller positive g factors, can be highly anisotropic in single quantum dots. It is shown that the in-plane anisotropy of the hole spins can even reverse its sign as the height of the dots varies. In vertically coupled quantum dots, the in-plane hole g factors become comparable to the electrons, almost one order of magnitude larger than those in the single dots. Our result agrees qualitatively with the recent experiment [S. A. Crooker et al., Phys. Rev. Lett. 104, 036601 (2010)].-
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_US
dc.relation.ispartofPhysical Review B: Condensed Matter and Materials Physicsen_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysical Review B: Condensed Matter and Materials Physics. Copyright © American Physical Society.-
dc.titleAnisotropic hole spins in single and coupled self-assembled quantum dotsen_US
dc.typeArticleen_US
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=82&issue=7, article no. 073308&spage=&epage=&date=2010&atitle=Anisotropic+hole+spins+in+single+and+coupled+self-assembled+quantum+dots-
dc.identifier.emailSheng, W: shengw@HKUCC-COM.hku.hken_US
dc.identifier.emailWang, J: jianwang@hkusub.hku.hken_US
dc.identifier.authorityWang, J=rp00799en_US
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevB.82.073308-
dc.identifier.scopuseid_2-s2.0-77957341236-
dc.identifier.hkuros183425en_US
dc.identifier.volume82en_US
dc.identifier.issue7, article no. 073308-
dc.identifier.isiWOS:000281365800003-

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