Modulated spin-liquid and magnetic order from a Kondo-Heisenberg model applied to U Ru 2 Si 2
FERRAZ, A.
International Institute of Physics, Universidade Federal do Rio Grande do Norte [IIP-UFRN]
< Réduire
International Institute of Physics, Universidade Federal do Rio Grande do Norte [IIP-UFRN]
Langue
en
Article de revue
Ce document a été publié dans
Physical Review B: Condensed Matter and Materials Physics (1998-2015). 2014-07-22, vol. 90, n° 4, p. 045125 (1-18)
American Physical Society
Résumé en anglais
Using the Kondo-Heisenberg model framework, we analyze the effect of charge fluctuations in the modulated spin liquid (MSL) and in the antiferromagnetic (AF) ordering which were introduced by Pépin et al. [Phys. Rev. Lett. ...Lire la suite >
Using the Kondo-Heisenberg model framework, we analyze the effect of charge fluctuations in the modulated spin liquid (MSL) and in the antiferromagnetic (AF) ordering which were introduced by Pépin et al. [Phys. Rev. Lett. 106, 106601 (2011)] and Thomas et al. [Phys. Rev. B 87, 014422 (2013)]. Coupling the spin liquid to the charge sector enables us to discuss the formation of the Kondo effect in this system. As a result, we are able to observe the emergence of two phases showing the coexistence of the Kondo effect and the MSL (Kondo-MSL phase) and the coexistence of the Kondo-MSL-AF phases. We discuss the critical lines separating the coexisting Kondo-MSL and Kondo-MSL-AF phases. Our model produces promising results as regards to the experimental temperature-pressure phase diagram and to the two gap openings observed in URu2Si2.< Réduire
Mots clés en anglais
Transition-metal compounds
Quantum critical phenomena
Quantum spin liquids
valence bond phases and related phenomena
Orbital
charge and other orders
including coupling of these orders
Projet Européen
New Century of Superconductivity: Ideas, Materials, Technologies
Origine
Importé de halUnités de recherche