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Article: Resonant coupling of bound excitons with LO phonons in ZnO: Excitonic polaron states and Fano interference

TitleResonant coupling of bound excitons with LO phonons in ZnO: Excitonic polaron states and Fano interference
Authors
KeywordsPhysics Chemistry
physical chemistry
Issue Date2005
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jcp.aip.org/jcp/staff.jsp
Citation
Journal Of Chemical Physics, 2005, v. 123 n. 22 How to Cite?
AbstractWe report on a photoluminescence observation of robust excitonic polarons due to resonant coupling of exciton and longitudinal optical (LO) phonon as well as Fano-type interference in high quality ZnO crystal. At low enough temperatures, resonant coupling of excitons and LO phonons leads to not only traditional Stokes lines (SLs) but also up to second-order anti-Stokes lines (ASLs) besides the zero-phonon line (ZPL). The SLs and ASLs are found to be not mirror symmetric with respect to the ZPL, strongly suggesting that they are from different coupling states of exciton and phonons. Besides these spectral features showing the quasiparticle properties of exciton-phonon coupling system, the first-order SL is found to exhibit characteristic Fano lineshape, caused by quantum interference between the LO components of excitonic polarons and the continuous phonon bath. These findings lead to a new insight into fundamental effects of exciton-phonon interactions. © 2005 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/45247
ISSN
2015 Impact Factor: 2.894
2015 SCImago Journal Rankings: 0.959
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorXu, SJen_HK
dc.contributor.authorXiong, SJen_HK
dc.contributor.authorShi, SLen_HK
dc.date.accessioned2007-10-30T06:20:57Z-
dc.date.available2007-10-30T06:20:57Z-
dc.date.issued2005en_HK
dc.identifier.citationJournal Of Chemical Physics, 2005, v. 123 n. 22en_HK
dc.identifier.issn0021-9606en_HK
dc.identifier.urihttp://hdl.handle.net/10722/45247-
dc.description.abstractWe report on a photoluminescence observation of robust excitonic polarons due to resonant coupling of exciton and longitudinal optical (LO) phonon as well as Fano-type interference in high quality ZnO crystal. At low enough temperatures, resonant coupling of excitons and LO phonons leads to not only traditional Stokes lines (SLs) but also up to second-order anti-Stokes lines (ASLs) besides the zero-phonon line (ZPL). The SLs and ASLs are found to be not mirror symmetric with respect to the ZPL, strongly suggesting that they are from different coupling states of exciton and phonons. Besides these spectral features showing the quasiparticle properties of exciton-phonon coupling system, the first-order SL is found to exhibit characteristic Fano lineshape, caused by quantum interference between the LO components of excitonic polarons and the continuous phonon bath. These findings lead to a new insight into fundamental effects of exciton-phonon interactions. © 2005 American Institute of Physics.en_HK
dc.format.extent157844 bytes-
dc.format.extent6153 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jcp.aip.org/jcp/staff.jspen_HK
dc.relation.ispartofJournal of Chemical Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysics Chemistryen_HK
dc.subjectphysical chemistryen_HK
dc.titleResonant coupling of bound excitons with LO phonons in ZnO: Excitonic polaron states and Fano interferenceen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-9606&volume=123&issue=22&spage=221105&epage=&date=2005&atitle=Resonant+coupling+of+bound+excitons+with+LO+phonons+in+ZnO:+excitonic+polaron+states+and+Fano+interferenceen_HK
dc.identifier.emailXu, SJ: sjxu@hku.hken_HK
dc.identifier.authorityXu, SJ=rp00821en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1063/1.2140701en_HK
dc.identifier.pmid16375462en_HK
dc.identifier.scopuseid_2-s2.0-29144520530en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-29144520530&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume123en_HK
dc.identifier.issue22en_HK
dc.identifier.isiWOS:000234120800005-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridXu, SJ=7404439005en_HK
dc.identifier.scopusauthoridXiong, SJ=7202791585en_HK
dc.identifier.scopusauthoridShi, SL=9532439000en_HK

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