Model for Ferromagnetic Quantum Critical Point in a 1D Kondo Lattice

ORAL

Abstract

Motivated by recent experiments, we study a quasi-one dimensional model of a Kondo lattice with Ferromagnetic coupling between the spins. Using bosonization and dynamical large-N techniques we establish the presence of a Fermi liquid and a magnetic phase separated by a local quantum critical point, governed by the Kondo breakdown picture. Thermodynamic properties are studied and a gapless charged mode at the quantum critical point is highlighted.

*This work was supported by a Rutgers University Materials Theory postdoctoral fellowhsip (YK), and by NSF grant DMR-1309929 (PC).

–

Presenters

  • Yashar Komijani

    • Department of Physics and Astronomy, Rutgers Univ
    • Department of Physics and Astronomy, Rutgers University

Authors

  • Yashar Komijani

    • Department of Physics and Astronomy, Rutgers Univ
    • Department of Physics and Astronomy, Rutgers University

  • Piers Coleman

    • Department of Physics and Astronomy, Rutgers Univ
    • Rutgers University
    • Department of Physics and Astronomy, Rutgers University
    • Department of Physics, 136 Frelinghuysen Road, Rutgers University
    • Physics and Astronomy, Rutgers University
    • Rutgers Univ