Electronic Correlation and Magnetism in the Ferromagnetic Metal Fe3GeTe2
Abstract
Motivated by the search for design principles of rare-earth-free strong magnets, we present a study of electronic structure and magnetic properties of the ferromagnetic metal Fe3GeTe2 within local density approximation (LDA) of the density functional theory, and its combination with dynamical mean-field theory (DMFT). For comparison to these calculations, we have measured magnetic and thermodynamic properties as well as X-ray magnetic circular dichroism and the photoemission spectrum of single crystal Fe3GeTe2. We find that the experimentally determined Sommerfeld coefficient is enhanced by an order of magnitude with respect to the LDA value. This enhancement can be partially explained by LDA+DMFT. Additionally, the inclusion of dynamical electronic correlation effects provides the experimentally observed magnetic moments, and the spectral density is in better agreement with photoemission data. Lastly, these results establish the importance of electronic correlations in this ferromagnet.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- National Center for Research in Energy and Materials (CNPEM), Campinas (Brazil). Brazil Synchrotron Light Lab. (LNLS)
- Uppsala Univ. (Sweden). Dept. of Physics & Astronomy
- Paul Scherrer Inst., Villigen (Switzerland). Lab. for Neutron Scattering and Imaging; KTH Royal Inst. of Technology, Stockholm (Sweden). Dept. of Materials and Nanophysics
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1338733
- Alternate Identifier(s):
- OSTI ID: 1245639
- Report Number(s):
- LA-UR-15-29522
Journal ID: iSSN 2469-9950
- Grant/Contract Number:
- AC52-06NA25396; INCA-2014-6426
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 93; Journal Issue: 14
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Material Science
Citation Formats
Zhu, Jian-Xin, Janoschek, Marc, Chaves, D. S., Cezar, J. C., Durakiewicz, Tomasz, Ronning, Filip, Sassa, Yasmine, Mansson, Martin, Scott, B. L., Wakeham, N., Bauer, Eric Dietzgen, and Thompson, Joe David. Electronic Correlation and Magnetism in the Ferromagnetic Metal Fe3GeTe2. United States: N. p., 2016.
Web. doi:10.1103/PhysRevB.93.144404.
Zhu, Jian-Xin, Janoschek, Marc, Chaves, D. S., Cezar, J. C., Durakiewicz, Tomasz, Ronning, Filip, Sassa, Yasmine, Mansson, Martin, Scott, B. L., Wakeham, N., Bauer, Eric Dietzgen, & Thompson, Joe David. Electronic Correlation and Magnetism in the Ferromagnetic Metal Fe3GeTe2. United States. https://doi.org/10.1103/PhysRevB.93.144404
Zhu, Jian-Xin, Janoschek, Marc, Chaves, D. S., Cezar, J. C., Durakiewicz, Tomasz, Ronning, Filip, Sassa, Yasmine, Mansson, Martin, Scott, B. L., Wakeham, N., Bauer, Eric Dietzgen, and Thompson, Joe David. Tue .
"Electronic Correlation and Magnetism in the Ferromagnetic Metal Fe3GeTe2". United States. https://doi.org/10.1103/PhysRevB.93.144404. https://www.osti.gov/servlets/purl/1338733.
@article{osti_1338733,
title = {Electronic Correlation and Magnetism in the Ferromagnetic Metal Fe3GeTe2},
author = {Zhu, Jian-Xin and Janoschek, Marc and Chaves, D. S. and Cezar, J. C. and Durakiewicz, Tomasz and Ronning, Filip and Sassa, Yasmine and Mansson, Martin and Scott, B. L. and Wakeham, N. and Bauer, Eric Dietzgen and Thompson, Joe David},
abstractNote = {Motivated by the search for design principles of rare-earth-free strong magnets, we present a study of electronic structure and magnetic properties of the ferromagnetic metal Fe3GeTe2 within local density approximation (LDA) of the density functional theory, and its combination with dynamical mean-field theory (DMFT). For comparison to these calculations, we have measured magnetic and thermodynamic properties as well as X-ray magnetic circular dichroism and the photoemission spectrum of single crystal Fe3GeTe2. We find that the experimentally determined Sommerfeld coefficient is enhanced by an order of magnitude with respect to the LDA value. This enhancement can be partially explained by LDA+DMFT. Additionally, the inclusion of dynamical electronic correlation effects provides the experimentally observed magnetic moments, and the spectral density is in better agreement with photoemission data. Lastly, these results establish the importance of electronic correlations in this ferromagnet.},
doi = {10.1103/PhysRevB.93.144404},
journal = {Physical Review B},
number = 14,
volume = 93,
place = {United States},
year = {Tue Apr 05 00:00:00 EDT 2016},
month = {Tue Apr 05 00:00:00 EDT 2016}
}
Web of Science
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