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Title
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Possible (bi) polaron effects in the high- superconductors
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Author
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Abstract
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| In the present paper, the theory of the large bipolaron is reviewed and the possibility of bipolaron formation in the high-T(c) superconductors is indicated. Operator and path-integral formulations of the large bipolaron problem are compared. In the strong-coupling limit, the effect of non-optimal upper-bounds to the single-polaron groundstate energy is emphasized. The fact that the interaction with multiple phonon branches enhances the electron-phonon interaction and might result in a larger stability region for bipolaron formation is indicated. Experimental values for the static and high-frequency dielectric constants are used to discuss the relevance of bipolaron formation as a pair-forming mechanism in the high-T(c) superconductors. |
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Language
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English
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Source (journal)
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Physica scripta / Kungliga Svenska Vetenskaps Akademien. - Stockholm, 1970, currens
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Source (book)
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11TH General Conf. Of the Condensed Matter Division of the European Physical Society, April 08-11, 1991, Exeter, England
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Publication
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Stockholm
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Royal Swedish Acad. Sciences
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1991
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ISSN
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0031-8949
[print]
1402-4896
[online]
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DOI
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10.1088/0031-8949/1991/T39/007
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Volume/pages
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T39
(1991)
, p. 66-70
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ISI
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A1991GV57300008
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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