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Measurement of Intrinsic Dirac Fermion Cooling on the Surface of the Topological Insulator Bi2Se3 Using Time-Resolved and Angle-Resolved Photoemission Spectroscopy

dc.contributor.authorWang, Y. H.
dc.contributor.authorHsieh, David
dc.contributor.authorSie, Edbert Jarvis
dc.contributor.authorSteinberg, Hadar
dc.contributor.authorGardner, Dillon Richard
dc.contributor.authorLee, Young S.
dc.contributor.authorJarillo-Herrero, Pablo
dc.contributor.authorGedik, Nuh
dc.date.accessioned2013-01-17T21:54:01Z
dc.date.available2013-01-17T21:54:01Z
dc.date.issued2012-09
dc.date.submitted2012-04
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.urihttp://hdl.handle.net/1721.1/76296
dc.description.abstractWe perform time- and angle-resolved photoemission spectroscopy of a prototypical topological insulator (TI) Bi[subscript 2]Se[subscript 3] to study the ultrafast dynamics of surface and bulk electrons after photoexcitation. By analyzing the evolution of surface states and bulk band spectra, we obtain their electronic temperature and chemical potential relaxation dynamics separately. These dynamics reveal strong phonon-assisted surface-bulk coupling at high lattice temperature and total suppression of inelastic scattering between the surface and the bulk at low lattice temperature. In this low temperature regime, the unique cooling of Dirac fermions in TI by acoustic phonons is manifested through a power law dependence of the surface temperature decay rate on carrier density.en_US
dc.description.sponsorshipUnited States. Army Research Office (ARO-DURIP Grant W911NF-09-1- 0170 ARTOF spectrometer)en_US
dc.description.sponsorshipNational Science Foundation (U.S.). Materials Research Science and Engineering Centers (Program) (Grant DMR-0819762)en_US
dc.description.sponsorshipUnited States. Dept. of Energy. Office of Basic Energy Sciences (Grant DE-SC0006423)en_US
dc.description.sponsorshipUnited States. Dept. of Energy. Office of Basic Energy Sciences (Grant DE-FG02-08ER46521)en_US
dc.description.sponsorshipUnited States. Dept. of Energy. Division of Materials Sciences and Engineeringen_US
dc.description.sponsorshipUnited States. Dept. of Energy (Early Career Award DE. SC0006418)en_US
dc.description.sponsorshipDavid & Lucile Packard Foundation (Fellowship)en_US
dc.language.isoen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevLett.109.127401en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAPSen_US
dc.titleMeasurement of Intrinsic Dirac Fermion Cooling on the Surface of the Topological Insulator Bi2Se3 Using Time-Resolved and Angle-Resolved Photoemission Spectroscopyen_US
dc.typeArticleen_US
dc.identifier.citationWang, Y. et al. “Measurement of Intrinsic Dirac Fermion Cooling on the Surface of the Topological Insulator Bi_{2}Se_{3} Using Time-Resolved and Angle-Resolved Photoemission Spectroscopy.” Physical Review Letters 109.12 (2012). © 2012 American Physical Societyen_US
dc.contributor.departmentMIT Materials Research Laboratoryen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.mitauthorWang, Y. H.
dc.contributor.mitauthorHsieh, David
dc.contributor.mitauthorSie, Edbert Jarvis
dc.contributor.mitauthorSteinberg, Hadar
dc.contributor.mitauthorGardner, Dillon Richard
dc.contributor.mitauthorLee, Young S.
dc.contributor.mitauthorJarillo-Herrero, Pablo
dc.contributor.mitauthorGedik, Nuh
dc.relation.journalPhysical Review Lettersen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsWang, Y.; Hsieh, D.; Sie, E.; Steinberg, H.; Gardner, D.; Lee, Y.; Jarillo-Herrero, P.; Gedik, N.en
dc.identifier.orcidhttps://orcid.org/0000-0003-2226-6443
dc.identifier.orcidhttps://orcid.org/0000-0003-3477-6459
dc.identifier.orcidhttps://orcid.org/0000-0002-6394-4987
dc.identifier.orcidhttps://orcid.org/0000-0002-7022-8313
dc.identifier.orcidhttps://orcid.org/0000-0001-8217-8213
dc.identifier.orcidhttps://orcid.org/0000-0002-0042-9195
dspace.mitauthor.errortrue
mit.licensePUBLISHER_POLICYen_US
mit.metadata.statusComplete


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