Microscopic understanding of magnetic interactions in bilayer CrI3
| Autor: | Myung Joon Han, Siheon Ryee, Min Yong Jeong, Hongkee Yoon, Seung Woo Jang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) Magnetism FOS: Physical sciences 02 engineering and technology 01 natural sciences Condensed Matter - Strongly Correlated Electrons symbols.namesake 0103 physical sciences Antiferromagnetism General Materials Science 010306 general physics Condensed Matter - Materials Science Strongly Correlated Electrons (cond-mat.str-el) Condensed matter physics Materials Science (cond-mat.mtrl-sci) Order (ring theory) 021001 nanoscience & nanotechnology Magnetic field Ferromagnetism symbols Condensed Matter::Strongly Correlated Electrons van der Waals force 0210 nano-technology Ground state Monoclinic crystal system |
| Zdroj: | Physical Review Materials. 3 |
| ISSN: | 2475-9953 |
| DOI: | 10.1103/physrevmaterials.3.031001 |
| Popis: | We performed the detailed microscopic analysis of the inter-layer magnetic couplings for bilayer CrI$_3$. As the first step toward understanding the recent experimental observations and utilizing them for device applications, we estimated magnetic force response as well as total energy. Various van der Waals functionals equivocally point to the ferromagnetic ground state for the low-temperature structured bilayer CrI$_3$ which is further confirmed independently by magnetic force response calculations. The calculated orbital-dependent magnetic forces clearly show that $e_g$-$t_{2g}$ interaction is the key to stabilize this ferromagnetic order. By suppressing this ferromagnetic interaction and enhancing antiferromagnetic orbital channels of $e_g$-$e_g$ and $t_{2g}$-$t_{2g}$, one can realize the desirable antiferromagnetic order. We showed that high-temperature monoclinic stacking can be the case. Our results provide unique information and insight to understand the magnetism of multi-layer CrI$_3$ paving the way to utilize it for applications. Comment: 15 pages, 3 figures, one-column |
| Databáze: | OpenAIRE |
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