Transition-metal adatoms on 2D-GaAs: a route to chiral magnetic 2D materials by design. (18th February 2021)

• Record Type: Journal Article
• Authors: González-García, A; López-Pérez, W; González-Hernández, R; Bacaksiz, C; Šabani, D; Milošević, M V; Peeters, F M
• Is Part Of: Journal of physics. Volume 33:Number 14(2021)
• Publication Date: 2021-02-18
• Subjects: DFT -- 2D-GaAs -- transition metal atom -- magneto-electronics -- MAE; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/abe077
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: Using relativistic density-functional calculations, we examine the magneto-crystalline anisotropy and exchange properties of transition-metal atoms adsorbed on 2D-GaAs. We show that single Mn and Mo atom (Co and Os) strongly bind on 2D-GaAs, and induce local out-of-plane (in-plane) magnetic anisotropy. When a pair of TM atoms is adsorbed on 2D-GaAs in a close range from each other, magnetisation properties change (become tunable) with respect to concentrations and ordering of the adatoms. In all cases, we reveal presence of strong Dzyaloshinskii–Moriya interaction. These results indicate novel pathways towards two-dimensional chiral magnetic materials by design, tailored for desired applications in magneto-electronics.