Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session J40: Magnetic Spin Textures
3:00 PM–6:00 PM,
Tuesday, March 16, 2021
Sponsoring
Units:
GMAG DMP
Chair: Lazar Kish, University of Illinois at Urbana-Champaign
Abstract: J40.00005 : A general, microscopic model of B20 magnets*
3:48 PM–4:00 PM
Not Participating
Presenter:
Kyle Hall
(Memo Univ of Newfoundland)
Authors:
Kyle Hall
(Memo Univ of Newfoundland)
Stephanie Curnoe
(Memo Univ of Newfoundland)
In contrast to the standard continuum model used to describe these materials, we introduce a general, symmetry-invariant, microscopic model of nearest-neighbour exchange interactions constructed through group theoretical means. This model is determined up to the relative strength of nine model terms. Computational studies using the Effective Field Method are also presented and provide intuition into the role of each model term in determining the magnetic order of these materials. These simulations reveal atomic-scale features which are not adequately described by continuum models.
*This work was supported by NSERC through the CGS-M program.
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