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Spin-polarized two-dimensional electron gas in undoped MgxZn1−xO/ZnO heterostructures

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dc.contributor.authorHan, K.
dc.contributor.authorTang, N.
dc.contributor.authorYe, J. D.
dc.contributor.authorDuan, J. X.
dc.contributor.authorLiu, Y. C.
dc.contributor.authorTeo, K. L.
dc.contributor.authorShen, B.
dc.date.accessioned2015-10-29T00:06:46Z
dc.date.available2015-10-29T00:06:46Z
dc.date.issued2012-05-08
dc.date.updated2016-02-24T10:19:20Z
dc.description.abstractQuantum transport properties of two-dimensional electron gas(2DEG) in undoped MgₓZn₁ˍₓO/ZnO heterostructures grown by metal organic vapor phase epitaxy have been investigated. A large zero-field spin-splitting energy more than 15 meV in the 2DEG is determined at 1.6 K. Meanwhile, ferromagnetism is observed in the heterostructures. The findings reveal that the 2DEG is spin polarized at zero magnetic fields. It is believed that the exchange interaction between the itinerant electrons in the two-dimensional channel and the magnetic polarons in the MgₓZn₁ˍₓO barrier around the interface results in the spin polarization of the 2DEG.
dc.description.sponsorshipThis work was supported by National Basic Research Program of China (Nos. 2012CB921304 and 2012CB619306), the National Natural Science Foundation of China (Nos. 60806042, 11174008, and 60990313), the Research Fund for the Doctoral Program of Higher Education in China (200800011021), the Wuhan National High Magnetic Field Center (WHMFCKF2011004), Singapore Agency for Science, Technology and Research (A*STAR) (No. 052- 126-0095) and Infuse Project No. I01-0911-06.en_AU
dc.identifier.issn0003-6951en_AU
dc.identifier.urihttp://hdl.handle.net/1885/16158
dc.publisherAmerican Institute of Physics (AIP)
dc.rightshttp://www.sherpa.ac.uk/romeo/issn/0003-6951..."Publishers version/PDF may be used on author's personal website, institutional website or institutional repository" from SHERPA/RoMEO site (as at 29/10/15). Copyright 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters and may be found at https://doi.org/10.1063/1.4711775
dc.sourceApplied Physics Letters
dc.subjectKeywords: Itinerant electrons; Magnetic polarons; Metal-organic vapor phase epitaxy; Quantum transport properties; Spin splittings; Spin-polarized; Two dimensional channels; Two-dimensional electron gas (2DEG); Zero fields; Zero magnetic fields; Electron gas; Magne
dc.titleSpin-polarized two-dimensional electron gas in undoped MgxZn1−xO/ZnO heterostructures
dc.typeJournal article
local.bibliographicCitation.issue19en_AU
local.bibliographicCitation.lastpage4
local.bibliographicCitation.startpage192105en_AU
local.contributor.affiliationHan, K., Peking University, Chinaen_AU
local.contributor.affiliationTang, N., Peking University, Chinaen_AU
local.contributor.affiliationYe, Jiandong, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National Universityen_AU
local.contributor.affiliationDuan, J.X., Peking University, Chinaen_AU
local.contributor.affiliationLiu, Y.C., Peking University, Chinaen_AU
local.contributor.affiliationTeo, Kie Leong, National University of Singapore, Singaporeen_AU
local.contributor.affiliationShen, B., Peking University, Chinaen_AU
local.contributor.authoruidu4920827en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor091205en_AU
local.identifier.absfor090605en_AU
local.identifier.absfor020406en_AU
local.identifier.absseo850700en_AU
local.identifier.absseo850404en_AU
local.identifier.absseo810107en_AU
local.identifier.ariespublicationU3594520xPUB493en_AU
local.identifier.citationvolume100en_AU
local.identifier.doi10.1063/1.4711775en_AU
local.identifier.scopusID2-s2.0-84862063502
local.publisher.urlhttps://www.aip.org/en_AU
local.type.statusPublished Versionen_AU

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