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Strain-tunable phase transition and doping-induced magnetism in iodinene
- Source :
- Applied Physics Letters. 119:102403
- Publication Year :
- 2021
- Publisher :
- AIP Publishing, 2021.
-
Abstract
- Two-dimensional (2D) ferromagnetic materials with high Curie temperatures (TC) and tunable physical properties are crucial to the development of nanoscale spintronics devices. Here, we investigate the newly synthesized iodinene using first-principles calculations. Our results show that doping carriers in monolayer and bilayer iodinene can easily introduce itinerant ferromagnetism due to a flatband structure near the Fermi level, and that the associated TC is higher than room temperature. Moreover, we find that a structural phase transition can be achieved through the application of moderate tensile strain for both monolayer and bilayer iodinene. The magnetic moment, Curie temperature, band structure, carrier effective mass, and optical absorption can be changed significantly through this phase transition, and the transition can also lead to a magnetic phase transition with an appropriate doping concentration. Our work provides a feasible approach for designing 2D magnetic materials with potential for application in microelectronics devices.
- Subjects :
- Phase transition
Materials science
Physics and Astronomy (miscellaneous)
Condensed matter physics
Spintronics
Magnetism
Fermi level
Condensed Matter::Materials Science
symbols.namesake
Effective mass (solid-state physics)
Ferromagnetism
Monolayer
symbols
Curie temperature
Condensed Matter::Strongly Correlated Electrons
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 119
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........ec3ebeee66fa8d378f364aecd2d122a4
- Full Text :
- https://doi.org/10.1063/5.0063802