First-principle studies on the ferroelectricity and gate-controlled Rashba spin-orbit coupling of d1T-phase transition-metal dichalcogenide monolayers

2021 ◽  
Vol 134 ◽  
pp. 114934
Author(s):  
Wenzhe Zhou ◽  
Aolin Li ◽  
Shenglin Peng ◽  
Fangping Ouyang
Keyword(s):  
Phase Transition ◽  
Transition Metal ◽  
Orbit Coupling ◽  
Transition Metal Dichalcogenide ◽  
First Principle ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Rashba Spin

scholarly journals Moiré Engineering of Spin-Orbit Coupling in Twisted Platinum Diselenide

2022 ◽  
Author(s):  
Lennart Klebl ◽  
Qiaoling Xu ◽  
Ammon Fischer ◽  
Lede Xian ◽  
Martin Claassen ◽  
...  
Keyword(s):  
Large Scale ◽  
Charge Density Waves ◽  
Orbit Coupling ◽  
Transition Metal Dichalcogenide ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Functional Renormalization Group ◽  
Ab Initio Simulations ◽  
Rashba Spin ◽  
Spin Orbit Interactions

Abstract We study the electronic structure and correlated phases of twisted bilayers of platinum diselenide using large-scale ab initio simulations combined with the functional renormalization group. PtSe2 is a group-X transition metal dichalcogenide, which hosts emergent flat bands at small twist angles in the twisted bilayer. Remarkably, we find that moiré engineering can be used to tune the strength of Rashba spin-orbit interactions, altering the electronic behavior in a novel manner. We reveal that an effective triangular lattice with a twist-controlled ratio between kinetic and spin-orbit coupling scales can be realized. Even dominant spin-orbit coupling can be accessed in this way and we discuss consequences for the interaction driven phase diagram, which features pronounced exotic superconducting and entangled spin-charge density waves.

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