Abstract
This paper shows that two-dimensional Ising-type ferromagnetic semiconductors TcSiTe3, TcGeSe3 and TcGeTe3 with high Curie temperatures around 200~500 K possess large magnetocrystalline anisotropy energy, large anomalous Hall conductivity, and large magneto-optical Kerr angles due to their large spin-orbit couplings.
Highlights
Spin-orbit coupling (SOC) describes the relativistic interaction between the spin and orbital momentum of electrons [1]
The crystal structure of TcSiTe3, TcGeSe3, and TcGeTe3 monolayers from the prototypal CrGeTe3 monolayer is depicted in Fig. 1(a), where the space group is P3 ̄1m (No 191)
Using first-principles calculations, we proposed three stable 2D Ising-type ferromagnetic semiconductors of TcSiTe3, TcGeSe3, and TcGeTe3 with high Curie temperatures of
Summary
Spin-orbit coupling (SOC) describes the relativistic interaction between the spin and orbital momentum of electrons [1]. Spin-orbit coupling can drive rich phenomena, such as magnetic anisotropy [2], spin relaxation [3], magnetic damping [4], anisotropic magnetoresistance [5], and the anomalous Hall effect [6]. The term spin orbitronics was proposed to cover the expanding research field, where SOC is a key concept [1,7,8]. Magnetic anisotropy is one of the fundamental properties of magnetic materials. It is a key issue in recent advances in two-dimensional (2D) magnetic semiconductors [17,18,19,20]. To stabilize long-range ferromagnetic order in 2D magnetic semiconductors at finite temperature, a large
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