scholarly journals Tunable Rashba spin splitting in Janus transition-metal dichalcogenide monolayers via charge doping

RSC Advances ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 6388-6394
Author(s):  
Jiajia Chen ◽  
Kai Wu ◽  
Huanhuan Ma ◽  
Wei Hu ◽  
Jinlong Yang
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Spin Splitting ◽  
Hole Doping ◽  
Transition Metal Dichalcogenide ◽  
Rashba Effect ◽  
Rashba Spin ◽  
Rashba Spin Splitting ◽  
Charge Doping ◽  
Metal Dichalcogenides

Two-dimensional Janus transition-metal dichalcogenides possess an intrinsic Rashba effect, which can be manipulated by charge doping. Electron doping can effectively strengthen the Rashba effect, while hole doping would weaken it.

Nonlinear Rashba spin splitting in transition metal dichalcogenide monolayers

Nanoscale ◽  
2016 ◽  
Vol 8 (41) ◽  
pp. 17854-17860 ◽  
Author(s):  
Cai Cheng ◽  
Jia-Tao Sun ◽  
Xiang-Rong Chen ◽  
Hui-Xia Fu ◽  
Sheng Meng
Keyword(s):  
Transition Metal ◽  
Spin Splitting ◽  
Transition Metal Dichalcogenide ◽  
Rashba Spin ◽  
Rashba Spin Splitting

Intrinsic and anisotropic Rashba spin splitting in Janus transition-metal dichalcogenide monolayers

2018 ◽  
Vol 97 (23) ◽  
Author(s):  
Tao Hu ◽  
Fanhao Jia ◽  
Guodong Zhao ◽  
Jiongyao Wu ◽  
Alessandro Stroppa ◽  
...  
Keyword(s):  
Transition Metal ◽  
Spin Splitting ◽  
Transition Metal Dichalcogenide ◽  
Rashba Spin ◽  
Rashba Spin Splitting

First-principles study of electronic and sodium-ion transport properties of transition-metal dichalcogenides

2018 ◽  
Vol 32 (20) ◽  
pp. 1850215 ◽  
Author(s):  
Zheng-Hai Liu ◽  
Ying Lin ◽  
Can Cao ◽  
Shu-Liang Zou ◽  
Jian-Tian Xiao ◽  
...  
Keyword(s):  
Transition Metal ◽  
Electric Field ◽  
Energy Gap ◽  
Transition Metal Dichalcogenides ◽  
Spin Splitting ◽  
Fast Diffusion ◽  
2D Layered Materials ◽  
Wide Range ◽  
Rashba Spin Splitting ◽  
Metal Dichalcogenides

Two-dimensional (2D) layered materials such as transition-metal dichalcogenides TS[Formula: see text]X[Formula: see text] (T = Mo, W; X = Se, Te) are available in mono and bilayers forms. The Rashba spin splitting is induced by the breaking of inversion symmetry in monolayer. The electronic structure of TS[Formula: see text]X[Formula: see text] is sensitive to an applied electric field. The perpendicular electric field can tune the energy gap. The semiconductor–metal transition appears under the critical electric field in the MoSSe/WSSe heterobilayer, and MoSTe/WSTe heterobilayer exhibits metal character due to spin–orbit coupling. Moreover, the results show that during sodiation/desodiation processes single-phase transition occurs with one one-dimensional (1D) transportation paths of sodium ions in MoS2, suggesting fast diffusion. Our results provide important insights into a wide range of applications of spin-polarized semiconductors and energy storage for transition-metal dichalcogenides TS[Formula: see text]X[Formula: see text].

scholarly journals Second-harmonic generation enhancement in monolayer transition-metal dichalcogenides by using an epsilon-near-zero substrate

2021 ◽  
Vol 3 (1) ◽  
pp. 272-278
Author(s):  
Pilar G. Vianna ◽  
Aline dos S. Almeida ◽  
Rodrigo M. Gerosa ◽  
Dario A. Bahamon ◽  
Christiano J. S. de Matos
Keyword(s):  
Dielectric Constant ◽  
Transition Metal ◽  
Harmonic Generation ◽  
Nonlinear Effect ◽  
Second Harmonic ◽  
2D Materials ◽  
Transition Metal Dichalcogenides ◽  
Transition Metal Dichalcogenide ◽  
Metal Dichalcogenides ◽  
Epsilon Near Zero

The scheme illustrates a monolayer transition-metal dichalcogenide on an epsilon-near-zero substrate. The substrate near-zero dielectric constant is used as the enhancement mechanism to maximize the SHG nonlinear effect on monolayer 2D materials.

Size-dependent phase stability in transition metal dichalcogenide nanoparticles controlled by metal substrates

Nanoscale ◽  
2021 ◽  
Author(s):  
Albert Bruix ◽  
Jeppe Vang Lauritsen ◽  
Bjork Hammer
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Phase Stability ◽  
Transition Metal Dichalcogenides ◽  
Transition Metal Dichalcogenide ◽  
Metal Substrates ◽  
Size Dependent ◽  
Metal Dichalcogenides

Nanomaterials based on MoS2 and related transition metal dichalcogenides are remarkably versatile; MoS2 nanoparticles are proven catalysts for processes such as hydrodesulphurization and the hydrogen evolution reaction, and transition metal...

scholarly journals Polarity tuning of spin-orbit-induced spin splitting in two-dimensional transition metal dichalcogenides

2017 ◽  
Vol 122 (15) ◽  
pp. 153905 ◽  
Author(s):  
Moh. Adhib Ulil Absor ◽  
Iman Santoso ◽  
Harsojo ◽  
Kamsul Abraha ◽  
Hiroki Kotaka ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Spin Splitting ◽  
Spin Orbit ◽  
Two Dimensional ◽  
Metal Dichalcogenides

scholarly journals Exciton g-factors in monolayer and bilayer WSe2 from experiment and theory

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Jonathan Förste ◽  
Nikita V. Tepliakov ◽  
Stanislav Yu. Kruchinin ◽  
Jessica Lindlau ◽  
Victor Funk ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Transition Metal Dichalcogenide ◽  
Layer Transition ◽  
General Terms ◽  
Indirect Excitons ◽  
Metal Dichalcogenides ◽  
Experimental Findings ◽  
Experimental And Theoretical Studies

Abstract The optical properties of monolayer and bilayer transition metal dichalcogenide semiconductors are governed by excitons in different spin and valley configurations, providing versatile aspects for van der Waals heterostructures and devices. Here, we present experimental and theoretical studies of exciton energy splittings in external magnetic field in neutral and charged WSe2 monolayer and bilayer crystals embedded in a field effect device for active doping control. We develop theoretical methods to calculate the exciton g-factors from first principles for all possible spin-valley configurations of excitons in monolayer and bilayer WSe2 including valley-indirect excitons. Our theoretical and experimental findings shed light on some of the characteristic photoluminescence peaks observed for monolayer and bilayer WSe2. In more general terms, the theoretical aspects of our work provide additional means for the characterization of single and few-layer transition metal dichalcogenides, as well as their heterostructures, in the presence of external magnetic fields.

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