Electronic and magnetic properties of SnSe monolayers doped by Ga, In, As, and Sb: a first-principles study
Literature Information
Qingxia Wang, Xiaonan Fu, Chong Qiao, Congxin Xia, Yu Jia
A SnSe monolayer with an orthorhombic Pnma GeS structure is an important two-dimensional (2D) indirect band gap material at room temperature. Based on first-principles density functional theory calculations, we present systematic studies on the electronic and magnetic properties of X (X = Ga, In, As, Sb) atom doped SnSe monolayers. The calculated electronic structures show that the Ga-doped system maintains its semiconducting properties while the In-doped SnSe monolayer is half-metal. The As- and Sb-doped SnSe systems present the characteristics of an n-type semiconductor. Moreover, all considered substitutional doping cases induce magnetic ground states with a magnetic moment of ∼1 μB. In addition, the calculated formation energies also show that four types of doped systems are thermodynamically stable. These results provide a new route for the potential applications of doped SnSe monolayers in 2D photoelectronic and magnetic semiconductor devices.
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.













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