Field-induced transitions in anisotropic kondo lattice - Application to CeT2Al10

Taku Kikuchi, Shintaro Hoshino, Naokazu Shibata, Yoshio Kuramoto

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5 Citations (Scopus)

Abstract

The magnetic properties of an anisotropic Kondo lattice are investigated under a magnetic field using dynamical mean field theory and the continuous-time quantum Monte Carlo method. The magnetic phase diagram is determined from the temperature dependence of both uniform and staggered magnetizations in magnetic fields. We find a spin-flop transition inside the antiferromagnetic (AF) phase, whose transition field increases with increasing Kondo coupling while the AF transition temperature decreases. These results cannot be described by a simple spin Hamiltonian and are consistent with the experimental results of the field-induced transition observed in CeT2Al10 (T = Ru, Os). The anisotropic susceptibilities of CeT2Al10 are reproduced in the whole temperature range by incorporating the effects of the crystalline electric field (CEF) in the anisotropic Kondo lattice. We also propose a possible explanation for the difference in anisotropies between the magnetic susceptibility and AF moments observed in experiments.

Original languageEnglish
Article number094602
Journaljournal of the physical society of japan
Volume86
Issue number9
DOIs
Publication statusPublished - 2017 Sep 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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