Assisted hopping and interaction effects in impurity models

L. Borda, F. Guinea

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We study, using numerical renormalization-group methods, the generalization of the Anderson impurity model where the hopping depends on the filling of the impurity. We show that the model, for sufficiently large values of the assisted hopping term, shows a regime where local pairing correlations are enhanced. These correlations involve pairs fluctuating between on-site and nearest-neighbor positions.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume70
Issue number12
DOIs
Publication statusPublished - Sep 2004

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Impurities
impurities
renormalization group methods
interactions

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Assisted hopping and interaction effects in impurity models. / Borda, L.; Guinea, F.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 70, No. 12, 09.2004.

Research output: Contribution to journalArticle

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