Dynamical Breakup of the Fermi Surface in a doped Mott Insulator

ORAL

Abstract

The evolution from an anomalous metallic phase to a Mott insulator within the two-dimensional Hubbard model is investigated by means of the Cellular Dynamical Mean-Field Theory. We show that the density-driven Mott metal-insulator transition is approached in a non-uniform way in different regions of the momentum space. This gives rise to a breakup of the Fermi surface and to the formation of {\it hot} and {\it cold} regions, whose position depends on the hole or electron like nature of the carriers in the system.

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Authors

  • Marcello Civelli

    • Dept of Physics, Rutgers University, Piscataway NJ USA
    • Physics Department and Center for Materials, Rutgers University, Piscataway NJ USA

  • Massimo Capone

    • INFM-SMC and Istituto dei Sistemi Complessi CNR and Department of Physics University of Rome ``La Sapenza" , Rome ITALY

  • Srivenkateswara Kancharla

    • Departement de physique and Regroupement quebecois sur les materiaux de pointe, Universit\'e de Sherbrooke, Sherbrooke, QUEBEC J1K 2R1, CANADA

  • Olivier Parcollet

    • CEA-Saclay
    • SPhT CEA Saclay
    • CEA-Saclay. FRANCE
    • Service de Physique Theorique, CEA Saclay , 91191, Gif-Sur Yvette, France

  • Gabriel Kotliar

    • Rutgers University
    • Center for Materials Theory, Department of Physics and Astronomy, Rutgers University
    • Department of Physics, Rutgers University, Piscataway NJ USA
    • Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854-8019, USA
    • Center for Materials Theory, Serin Physics Laboratory, Rutgers University, 136 Frelinghuysen Road, Piscataway, New Jersey 08854
    • Physics Department and Center for Materials, Rutgers University, Piscataway NJ USA