Spin-orbit coupling and electronic charge effects in Mott insulators
Abstract
We derive the effective charge- and current-density operators for the strong-coupling limit of a single-band Mott insulator in the presence of spin-orbit coupling and show that the spin-orbit contribution to the effective charge density leads to novel mechanisms for multiferroic behavior. In some sense, these mechanisms are the electronic counterpart of the ionic-based mechanisms, which have been proposed for explaining the electric polarization induced by spiral spin orderings. In addition, the new electronic mechanisms are illustrated by considering cycloidal and proper-screw magnetic orderings on sawtooth and kagome lattices. As for the isotropic case, geometric frustration is crucial for achieving this purely electronic coupling between spin and charge degrees of freedom.
- Authors:
-
- Zhejiang Univ., Hangzhou (People's Republic of China)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1234260
- Alternate Identifier(s):
- OSTI ID: 1180285
- Report Number(s):
- LA-UR-14-28062
Journal ID: ISSN 1098-0121; PRBMDO
- Grant/Contract Number:
- 11074216; 11274272; AC52-06NA25396; PHYS-1066293
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B, Condensed Matter and Materials Physics
- Additional Journal Information:
- Journal Volume: 90; Journal Issue: 19; Journal ID: ISSN 1098-0121
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Zhu, Shan, Li, You -Quan, and Batista, Cristian D. Spin-orbit coupling and electronic charge effects in Mott insulators. United States: N. p., 2014.
Web. doi:10.1103/PhysRevB.90.195107.
Zhu, Shan, Li, You -Quan, & Batista, Cristian D. Spin-orbit coupling and electronic charge effects in Mott insulators. United States. https://doi.org/10.1103/PhysRevB.90.195107
Zhu, Shan, Li, You -Quan, and Batista, Cristian D. Tue .
"Spin-orbit coupling and electronic charge effects in Mott insulators". United States. https://doi.org/10.1103/PhysRevB.90.195107. https://www.osti.gov/servlets/purl/1234260.
@article{osti_1234260,
title = {Spin-orbit coupling and electronic charge effects in Mott insulators},
author = {Zhu, Shan and Li, You -Quan and Batista, Cristian D.},
abstractNote = {We derive the effective charge- and current-density operators for the strong-coupling limit of a single-band Mott insulator in the presence of spin-orbit coupling and show that the spin-orbit contribution to the effective charge density leads to novel mechanisms for multiferroic behavior. In some sense, these mechanisms are the electronic counterpart of the ionic-based mechanisms, which have been proposed for explaining the electric polarization induced by spiral spin orderings. In addition, the new electronic mechanisms are illustrated by considering cycloidal and proper-screw magnetic orderings on sawtooth and kagome lattices. As for the isotropic case, geometric frustration is crucial for achieving this purely electronic coupling between spin and charge degrees of freedom.},
doi = {10.1103/PhysRevB.90.195107},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 19,
volume = 90,
place = {United States},
year = {Tue Nov 04 00:00:00 EST 2014},
month = {Tue Nov 04 00:00:00 EST 2014}
}
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Works referencing / citing this record:
Frustration and chiral orderings in correlated electron systems
journal, July 2016
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