Surface-induced phenomena in uncompensated collinear antiferromagnets
Abstract
The net spontaneous magnetization of antiferromagnets with modified surfaces was computed using mean-field theory. For ordinary phase transitions the net magnetization of uncompensated AFM is smaller than the surface magnetization and the Néel vector, whereas for extraordinary phase transitions the net magnetization is larger than the surface magnetization and the Néel vector at finite temperature. Moreover, the temperature dependence of these three observable internal parameters changes drastically with the surface properties, i.e. the surface exchange coupling JS. Based on these findings, contour plots showing different regions of magnetization and Néel vector behavior as functions of temperature and surface exchange strength are proposed.
- Authors:
-
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division; Univ. of California, Berkeley, CA (United States). Dept. of Physics
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1512174
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Physics. Condensed Matter
- Additional Journal Information:
- Journal Volume: 27; Journal Issue: 8; Journal ID: ISSN 0953-8984
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; antiferromagnet; surface; order parameter
Citation Formats
Charilaou, M., and Hellman, F. Surface-induced phenomena in uncompensated collinear antiferromagnets. United States: N. p., 2015.
Web. doi:10.1088/0953-8984/27/8/086001.
Charilaou, M., & Hellman, F. Surface-induced phenomena in uncompensated collinear antiferromagnets. United States. https://doi.org/10.1088/0953-8984/27/8/086001
Charilaou, M., and Hellman, F. Thu .
"Surface-induced phenomena in uncompensated collinear antiferromagnets". United States. https://doi.org/10.1088/0953-8984/27/8/086001. https://www.osti.gov/servlets/purl/1512174.
@article{osti_1512174,
title = {Surface-induced phenomena in uncompensated collinear antiferromagnets},
author = {Charilaou, M. and Hellman, F.},
abstractNote = {The net spontaneous magnetization of antiferromagnets with modified surfaces was computed using mean-field theory. For ordinary phase transitions the net magnetization of uncompensated AFM is smaller than the surface magnetization and the Néel vector, whereas for extraordinary phase transitions the net magnetization is larger than the surface magnetization and the Néel vector at finite temperature. Moreover, the temperature dependence of these three observable internal parameters changes drastically with the surface properties, i.e. the surface exchange coupling JS. Based on these findings, contour plots showing different regions of magnetization and Néel vector behavior as functions of temperature and surface exchange strength are proposed.},
doi = {10.1088/0953-8984/27/8/086001},
journal = {Journal of Physics. Condensed Matter},
number = 8,
volume = 27,
place = {United States},
year = {Thu Feb 05 00:00:00 EST 2015},
month = {Thu Feb 05 00:00:00 EST 2015}
}
Web of Science
Figures / Tables:
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