Bulletin of the American Physical Society
2018 Annual Meeting of the APS Four Corners Section
Volume 63, Number 16
Friday–Saturday, October 12–13, 2018; University of Utah, Salt Lake City, Utah
Session G01: Poster Session
5:00 PM,
Friday, October 12, 2018
CSC
Room: 205/206
Chair: David Kieda, University of Utah
Abstract ID: BAPS.2018.4CS.G01.37
Abstract: G01.00037 : Effects of Rashba spin-orbit coupling on low energy magnetization dynamics of the Hubbard model
Presenter:
Christopher Ard
(Colorado State Univ)
Authors:
Christopher Ard
(Colorado State Univ)
Hua Chen
(Colorado State Univ)
In the presence of strong spin-orbit coupling or magnetic fields, magnetization dynamics may involve nontrivial electronic corrections beyond the LLG equation. To address this problem we consider a microscopic Hubbard model on a 2D square lattice at half filling, which has a Neel antiferromagnetic ground state. The low energy magnetization dynamics can be obtained through perturbation theory based on the mean field ground state in the path integral formalism. We add a Rashba spin-orbit coupling to the standard Hubbard model and examine its modification on the Neel state. We then calculate the low-energy excitations by treating small variations on the order parameters as a perturbation. The study will shed light on effects of competing interactions and spin-orbit coupling on magnetization dynamics.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.4CS.G01.37
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