Variational study of conduction in doped Mott insulator in terms of kinetic energy

H. Yokoyama, S. Tamura, K. Kobayashi, M. Ogata

Research output: Contribution to journalConference articlepeer-review


The kinetic features of holes (electrons) in the Hubbard model are studied using a variational Monte Carlo method. In doped Mott insulators (U>U co), holes are classified, in the sense of conduction, into two categories: (i) The holes appearing in doublon-holon pairs are localized, encourage singlet pair formation, and gain the energy to induce a superconducting transition. (ii) The doped holes become carriers, make the system itinerant (superconducting or metallic), but lose the energy in the transition. These two roles are distinguished in correlated superconductivity. This feature is common to antiferromagnetic transitions at large.

Original languageEnglish
Pages (from-to)9-12
Number of pages4
JournalPhysics Procedia
Publication statusPublished - 2013
Event25th International Symposium on Superconductivity, ISS 2012 - Tokyo, Japan
Duration: 2012 Dec 32012 Dec 5


  • Cuprate
  • Doped Mott insulator
  • Doublon-holon binding
  • Hubbard model
  • Kinetic energy
  • Superconductivity
  • Variational Monte Carlo

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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