Magnetic ground state of semiconducting transition-metal trichalcogenide monolayers
Abstract
Layered transition-metal trichalcogenides with the chemical formula ABX3 have attracted recent interest as potential candidates for two-dimensional magnets. Using first-principles calculations within density functional theory, we investigate the magnetic ground states of monolayers of Mn- and Cr-based semiconducting trichalcogenides.We show that the second and third nearest-neighbor exchange interactions (J2 and J3) between magnetic ions, which have been largely overlooked in previous theoretical studies, are crucial in determining the magnetic ground state. Specifically, we find that monolayer CrSiTe3 is an antiferromagnet with a zigzag spin texture due to significant contribution from J3, whereas CrGeTe3 is a ferromagnet with a Curie temperature of 106 K. Monolayers of Mn compounds (MnPS3 and MnPSe3) always show antiferromagnetic N eel order. We identify the physical origin of various exchange interactions, and demonstrate that strain can be an effective knob for tuning the magnetic properties. Possible magnetic ordering in the bulk is also discussed. In conclusion, our study suggests that ABX3 can be a promising platform to explore two-dimensional magnetic phenomena.
- Authors:
-
- Carnegie Mellon Univ., Pittsburgh, PA (United States). Dept. of Physics
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); US Air Force Office of Scientific Research (AFOSR)
- OSTI Identifier:
- 1185963
- Alternate Identifier(s):
- OSTI ID: 1184889
- Grant/Contract Number:
- AC05-00OR22725; EFRI-1433496; FA9550-12-1-0479; FA9550- 14-1-0277
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B, Condensed Matter and Materials Physics
- Additional Journal Information:
- Journal Volume: 91; Journal Issue: 23; Journal ID: ISSN 1098-0121
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Sivadas, Nikhil, Daniels, Matthew W., Swendsen, Robert H., Okamoto, Satoshi, and Xiao, Di. Magnetic ground state of semiconducting transition-metal trichalcogenide monolayers. United States: N. p., 2015.
Web. doi:10.1103/PhysRevB.91.235425.
Sivadas, Nikhil, Daniels, Matthew W., Swendsen, Robert H., Okamoto, Satoshi, & Xiao, Di. Magnetic ground state of semiconducting transition-metal trichalcogenide monolayers. United States. https://doi.org/10.1103/PhysRevB.91.235425
Sivadas, Nikhil, Daniels, Matthew W., Swendsen, Robert H., Okamoto, Satoshi, and Xiao, Di. Tue .
"Magnetic ground state of semiconducting transition-metal trichalcogenide monolayers". United States. https://doi.org/10.1103/PhysRevB.91.235425. https://www.osti.gov/servlets/purl/1185963.
@article{osti_1185963,
title = {Magnetic ground state of semiconducting transition-metal trichalcogenide monolayers},
author = {Sivadas, Nikhil and Daniels, Matthew W. and Swendsen, Robert H. and Okamoto, Satoshi and Xiao, Di},
abstractNote = {Layered transition-metal trichalcogenides with the chemical formula ABX3 have attracted recent interest as potential candidates for two-dimensional magnets. Using first-principles calculations within density functional theory, we investigate the magnetic ground states of monolayers of Mn- and Cr-based semiconducting trichalcogenides.We show that the second and third nearest-neighbor exchange interactions (J2 and J3) between magnetic ions, which have been largely overlooked in previous theoretical studies, are crucial in determining the magnetic ground state. Specifically, we find that monolayer CrSiTe3 is an antiferromagnet with a zigzag spin texture due to significant contribution from J3, whereas CrGeTe3 is a ferromagnet with a Curie temperature of 106 K. Monolayers of Mn compounds (MnPS3 and MnPSe3) always show antiferromagnetic N eel order. We identify the physical origin of various exchange interactions, and demonstrate that strain can be an effective knob for tuning the magnetic properties. Possible magnetic ordering in the bulk is also discussed. In conclusion, our study suggests that ABX3 can be a promising platform to explore two-dimensional magnetic phenomena.},
doi = {10.1103/PhysRevB.91.235425},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 23,
volume = 91,
place = {United States},
year = {Tue Jun 16 00:00:00 EDT 2015},
month = {Tue Jun 16 00:00:00 EDT 2015}
}
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