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dc.contributor.authorSenger, R. T.en_US
dc.contributor.authorErçelebi, A.en_US
dc.date.accessioned2016-02-08T10:33:35Z
dc.date.available2016-02-08T10:33:35Z
dc.date.issued2002en_US
dc.identifier.issn1434-6028
dc.identifier.urihttp://hdl.handle.net/11693/24731
dc.description.abstractIn the limit of strong electron-phonon coupling, we analyze the stability of two dimensional bipolarons in a two-axis elliptic potential well of harmonic boundaries. The confined two-polaron wavefunction adopted here makes the electrons to form either a bipolaronic bound state or go into a composite state of two separated polarons bounded inside the same potential well. The methodology involves the mean polaron-polaron separation treated as an adjustable parameter to be determined variationally. By tuning the barrier slopes of the confining potential we obtain an explicit tracking of the criterion for bipolaron stability encompassing the particular cases of a two dimensional circular dot or a planar strip-like quantum well wire. We observe that, while an increased degree of confinement enhances bipolaronic stability, the effect of anisotropy is to inhibit bipolaron formation.en_US
dc.language.isoEnglishen_US
dc.source.titleEuropean Physical Journal Ben_US
dc.subject71.38.Fp Large or Fröhlich polaronsen_US
dc.subject71.38.Mx Bipolaronsen_US
dc.titleStrong-coupling theory of two dimensional large bipolarons in elliptical quantum dotsen_US
dc.typeArticleen_US
dc.departmentDepartment of Physicsen_US
dc.citation.spage253en_US
dc.citation.epage260en_US
dc.citation.volumeNumber26en_US
dc.citation.issueNumber2en_US
dc.publisherSpringeren_US


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