Strongly correlated fermions on a kagome lattice

A. O’Brien, F. Pollmann, and P. Fulde
Phys. Rev. B 81, 235115 – Published 15 June 2010

Abstract

We study a model of strongly correlated spinless fermions on a kagome lattice at 1/3 filling with interactions described by an extended Hubbard Hamiltonian. An effective Hamiltonian in the desired strong correlation regime is derived, from which the spectral functions are calculated by means of exact diagonalization techniques. We present our numerical results with a view to discussion of possible signatures of confinement/deconfinement of fractional charges.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
3 More
  • Received 19 February 2010

DOI:https://doi.org/10.1103/PhysRevB.81.235115

©2010 American Physical Society

Authors & Affiliations

A. O’Brien

  • Max Planck Institute for the Physics of Complex Systems, 38 Nöthnitzer Str., 01187 Dresden, Germany and Institut für Physik, Technische Universität Chemnitz, D-09107 Chemnitz, Germany

F. Pollmann

  • Department of Physics, University of California, Berkeley, California 94720, USA

P. Fulde

  • Max Planck Institute for the Physics of Complex Systems, 38 Nöthnitzer Str., 01187 Dresden, Germany and The Asia Pacific Center for Theoretical Physics, Pohang, Korea

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 81, Iss. 23 — 15 June 2010

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×