Theoretical analysis of the Jahn-Teller effect in the La-Ba-Cu-O superconductor

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Show simple item record Calles, A Castro, JJ Soto, JR Yépez, E 2011-01-22T10:27:54Z 2011-01-22T10:27:54Z 1997
dc.identifier.issn 0921-4534
dc.description.abstract We just commemorated the 10 years anniversary of the discovery of the high T-c superconductivity of Bednorz and Muller (BM). In their celebrated paper BM mentioned the possible role of the Jahn-Teller (JT) effect in the enhancement of the transition temperature to the superconducting state. In the present work we analize, under the quasi-molecular approximation, the conditions for the existence of the JT effect in the CuO6 cluster belonging to the La-Ba-Cu-O superconductor of BM. The electronic part is obtained from self consistent ab initio calculations and the force constants are calculated taking the second derivatives of the energy using the Hartree-Fock approximation for the electronic part. Both, the electronic and vibrational parts are classified accordingly to the irreducible representations of the D-4h group in order to establish the JT theorem. The physical consecuences of the presence of the JT effect in CuO6 cluster are discussed. en_US
dc.language.iso en en_US
dc.title Theoretical analysis of the Jahn-Teller effect in the La-Ba-Cu-O superconductor en_US
dc.type Article en_US
dc.identifier.idprometeo 2923
dc.source.novolpages 282:1623-1624
dc.subject.wos Physics, Applied
dc.description.index WoS: SCI, SSCI o AHCI
dc.relation.journal Physica C

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