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

Yashar Komijani and Piers Coleman
Phys. Rev. Lett. 120, 157206 – Published 13 April 2018
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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.

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  • Received 17 November 2017

DOI:https://doi.org/10.1103/PhysRevLett.120.157206

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Yashar Komijani1 and Piers Coleman1,2

  • 1Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
  • 2Department of Physics, Royal Holloway, University of London, Egham, Surrey TW20 0EX, United Kingdom

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Issue

Vol. 120, Iss. 15 — 13 April 2018

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