Universal Quantum Criticality at the Mott-Anderson Transition

M. C. O. Aguiar and V. Dobrosavljević
Phys. Rev. Lett. 110, 066401 – Published 5 February 2013

Abstract

We present a large N solution of a microscopic model describing the Mott-Anderson transition on a finite-coordination Bethe lattice. Our results demonstrate that strong spatial fluctuations, due to Anderson localization effects, dramatically modify the quantum critical behavior near disordered Mott transitions. The leading critical behavior of quasiparticle wave functions is shown to assume a universal form in the full range from weak to strong disorder, in contrast to disorder-driven non-Fermi liquid (“electronic Griffiths phase”) behavior, which is found only in the strongly correlated regime.

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  • Received 24 August 2012

DOI:https://doi.org/10.1103/PhysRevLett.110.066401

© 2013 American Physical Society

Authors & Affiliations

M. C. O. Aguiar1 and V. Dobrosavljević2

  • 1Departamento de Física, Universidade Federal de Minas Gerais, Avenida Antônio Carlos 6627, Belo Horizonte, Minas Gerais 31270-901, Brazil
  • 2Department of Physics and National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306, USA

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Vol. 110, Iss. 6 — 8 February 2013

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