Self-limiting evolution of seeded quantum wires and dots on patterned substrates

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Show simple item record Dimastrodonato, Valeria Pelucchi, Emanuele Vvedensky, D. D. 2017-09-04T09:02:30Z 2017-09-04T09:02:30Z 2012
dc.identifier.citation Dimastrodonato, V., Pelucchi, E. and Vvedensky, D. D. (2012) 'Self-limiting evolution of seeded quantum wires and dots on patterned substrates', Physical Review Letters, 108(25), 256102 (5pp). doi: 10.1103/PhysRevLett.108.256102 en
dc.identifier.volume 108
dc.identifier.issued 25
dc.identifier.issn 0031-9007
dc.identifier.doi 10.1103/PhysRevLett.108.256102
dc.description.abstract Extensive experimental data and an accompanying theoretical model are presented for the self-limiting profiles and Ga segregation on patterned GaAs(111)B substrates during metalorganic vapor-phase epitaxy of A1(x)Ga1-As-x. Self-limiting widths and segregation of Ga produce quantum dots along the base of pyramidal recesses bounded by (111)A planes and quantum wires along the vertical axis of the template, respectively. Coupled reaction-diffusion equations for precursor and adatom kinetics reproduce the measured concentration and temperature dependence of the self-limiting width and segregation. Our model can be extended to other patterned systems, providing a new paradigm for predicting the morphology of surface nanostructures and inferring their quantum optical properties. en
dc.description.sponsorship Higher Education Authority (INSPIRE programme); Science Foundation Ireland (SFI/05/IN.1/I25, SFI/10/IN.1/I3000) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Physical Society en
dc.rights © 2012, American Physical Society en
dc.subject Molecular beam epitaxy en
dc.subject Growth en
dc.subject GaAs en
dc.subject Heterostructures en
dc.subject Emission en
dc.subject Surface en
dc.title Self-limiting evolution of seeded quantum wires and dots on patterned substrates en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Emanuele Pelucchi, Tyndall National Institute, University College Cork, Cork, Ireland. +353-21-490-3000 Email: en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.internal.wokid WOS:000305569000011
dc.contributor.funder Science Foundation Ireland
dc.contributor.funder Higher Education Authority
dc.description.status Peer reviewed en
dc.identifier.journaltitle Physical Review Letters en
dc.internal.IRISemailaddress en
dc.identifier.articleid 256102

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