Toroidal order in a partially disordered state on a layered triangular lattice: Implication to UNi4B

Satoru Hayami, Hiroaki Kusunose, Yukitoshi Motome

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

A partial disorder on a layered triangular lattice is theoretically investigated from a viewpoint of toroidal ordering and magnetoelectric effects. We consider an extended periodic Anderson model including a site-dependent antisymmetric spin-orbit coupling between conduction and localized electrons. We show that, by the mean-field approximation, the model exhibits a coplanar vortex-lattice-type magnetic order as observed in a hexagonal uranium compound UNi4B, in the parameter region with intermediate hybridization and electron correlation. This peculiar state accommodates a toroidal order, which leads to the linear magnetoelectric effect. We discuss the implications of our results to UNi4B, focusing on the possible source of the site-dependent antisymmetric spin-orbit coupling.

Original languageEnglish
Article number012101
JournalJournal of Physics: Conference Series
Volume592
Issue number1
DOIs
Publication statusPublished - 2014
Event2014 International Conference on Strongly Correlated Electron Systems, SCES 2014 - Grenoble, France
Duration: 7 Jul 201414 Jul 2014

Fingerprint Dive into the research topics of 'Toroidal order in a partially disordered state on a layered triangular lattice: Implication to UNi<sub>4</sub>B'. Together they form a unique fingerprint.

Cite this