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Surface polaron formation in the holstein model

Nourafkan, R ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1103/PhysRevB.80.155130
  3. Publisher: 2009
  4. Abstract:
  5. The effect of a solid-vacuum interface on the properties of a strongly coupled electron-phonon system is analyzed using dynamical mean-field theory to solve the Holstein model in a semi-infinite cubic lattice. Polaron formation is found to occur more easily, i.e., for a weaker electron-phonon coupling, on the surface than in the bulk. On the other hand, the metal-insulator transition associated with the binding of polarons takes place at a unique critical strength in the bulk and at the surface. © 2009 The American Physical Society
  6. Keywords:
  7. Strongly Correlated Electrons (cond-mat.str-el)
  8. Source: Physical Review B - Condensed Matter and Materials Physics ; Volume 80, Issue 15 , 2009 ; 10980121 (ISSN)
  9. URL: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.80.155130