Li, Xinru ; Zhang, Zeying ; Zhang, Hongbin (2020)
High throughput study on magnetic ground states with Hubbard U corrections in transition metal dihalide monolayers.
In: Nanoscale Advances, 2 (1)
doi: 10.1039/C9NA00588A
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We present a high throughput study of the magnetic ground states for 90 transition metal dihalide monolayers TMX2 using density functional theory based on a collection of Hubbard U values. Stable geometrical phases between 2H and 1T are first determined. Spin-polarized calculations show that 50 out of 55 magnetic TMX2 monolayers are energetically prone to the 1T phase. Further, the magnetic ground states are determined by considering four local spin models with respect to different U values. Interestingly, 23 out of 55 TMX2 monolayers exhibit robust magnetic ground orderings which will not be changed by the U values. Among them, NiCl2 with a magnetic moment of 2 μB is a ferromagnetic (FM) insulator, while the VX2, MnX2 (X = Cl, Br and I), PtCl2 and CoI2 monolayers have noncollinear antiferromagnetic (120°-AFM) ground states with a tiny in-plane magnetic anisotropic energy, indicating flexible magnetic orientation rotation. The exchange parameters for both robust FM and 120°-AFM systems are analyzed in detail with the Heisenberg model. Our high-throughput calculations give a systematic study of the electronic and magnetic properties of TMX2 monolayers, and these two-dimensional materials with versatile magnetic behavior may have great potential for spintronic applications.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2020 |
| Autor(en): | Li, Xinru ; Zhang, Zeying ; Zhang, Hongbin |
| Art des Eintrags: | Bibliographie |
| Titel: | High throughput study on magnetic ground states with Hubbard U corrections in transition metal dihalide monolayers |
| Sprache: | Englisch |
| Publikationsjahr: | Januar 2020 |
| Verlag: | Royal Society of Chemistry (RSC) |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Nanoscale Advances |
| Jahrgang/Volume einer Zeitschrift: | 2 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1039/C9NA00588A |
| Kurzbeschreibung (Abstract): | We present a high throughput study of the magnetic ground states for 90 transition metal dihalide monolayers TMX2 using density functional theory based on a collection of Hubbard U values. Stable geometrical phases between 2H and 1T are first determined. Spin-polarized calculations show that 50 out of 55 magnetic TMX2 monolayers are energetically prone to the 1T phase. Further, the magnetic ground states are determined by considering four local spin models with respect to different U values. Interestingly, 23 out of 55 TMX2 monolayers exhibit robust magnetic ground orderings which will not be changed by the U values. Among them, NiCl2 with a magnetic moment of 2 μB is a ferromagnetic (FM) insulator, while the VX2, MnX2 (X = Cl, Br and I), PtCl2 and CoI2 monolayers have noncollinear antiferromagnetic (120°-AFM) ground states with a tiny in-plane magnetic anisotropic energy, indicating flexible magnetic orientation rotation. The exchange parameters for both robust FM and 120°-AFM systems are analyzed in detail with the Heisenberg model. Our high-throughput calculations give a systematic study of the electronic and magnetic properties of TMX2 monolayers, and these two-dimensional materials with versatile magnetic behavior may have great potential for spintronic applications. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Theorie magnetischer Materialien |
| Hinterlegungsdatum: | 30 Mär 2020 07:47 |
| Letzte Änderung: | 13 Jan 2024 16:44 |
| PPN: | |
| Projekte: | This work was supported by the Priority Program 1666 of the Deutsche Forschungsgemeinschaft (DFG)., Xinru Li gratefully acknowledges the financial support by the Sino-German (CSC-DAAD) postdoc scholarship program and the special funds for theoretical physics of National Natural Science Foundation of China (No. 11947121)., We acknowledge computing time on the Lichtenberg supercomputer at TU Darmstadt. |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum