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