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dc.contributor.authorTakhtamirov, E.
dc.contributor.authorMelnik, R. 
dc.date.accessioned2017-02-21T08:16:49Z
dc.date.available2017-02-21T08:16:49Z
dc.date.issued2011-12-31
dc.identifier.issn1098-0121
dc.identifier.urihttp://hdl.handle.net/20.500.11824/435
dc.description.abstractWe develop an analytical method to find plasmons generated by microwaves in a two-dimensional electron gas with defects. The excitations are expressed in terms of the wake field of a charged particle moving in plasma. The result explicitly addresses the efficiency of the photon-to-plasmon conversion and the type of excitation. While strong absorption of the radiation by the excitations is reached at larger plasmon wave numbers, intense persistent plasma waves are created at optimal ones. The latter wave numbers depend on the spectrum of plasmons and the distance that the waves are required to travel without being substantially attenuated. Their type, which can be traveling or standing, is governed by the geometry of the defects and the polarization of the radiation. We identify such types of traveling plasmons as circular plasmons, excited at dot defects, and traverse plasmons, excited at straight wire defects and traveling away from (toward) the wires if their group velocity is positive (negative). Nonlinear excitations are also accounted for. In particular, we analyze the zeroth harmonic, linear in the microwave intensity, which has the character of a frozen charge density wave. The interference of elementary wakes from defects arranged in truncated periodic sets can produce amplified plasmons, which are easily portrayed.
dc.formatapplication/pdf
dc.language.isoengen_US
dc.rightsReconocimiento-NoComercial-CompartirIgual 3.0 Españaen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/es/en_US
dc.titleExcitation of plasmons in a two-dimensional electron gas with defects by microwaves: Wake-field method
dc.typeinfo:eu-repo/semantics/articleen_US
dc.identifier.doi10.1103/PhysRevB.84.045313
dc.relation.publisherversionhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-79961181841&doi=10.1103%2fPhysRevB.84.045313&partnerID=40&md5=e372b8c4a98b7206ab36385d5e370e90
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessen_US
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersionen_US
dc.journal.titlePhysical Review B - Condensed Matter and Materials Physicsen_US


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