scholarly journals Strong coupling between excitons in transition metal dichalcogenides and optical bound states in the continuum

2018 ◽  
Vol 98 (16) ◽  
Author(s):  
K. L. Koshelev ◽  
S. K. Sychev ◽  
Z. F. Sadrieva ◽  
A. A. Bogdanov ◽  
I. V. Iorsh
Keyword(s):  
Transition Metal ◽  
Strong Coupling ◽  
Bound States ◽  
Transition Metal Dichalcogenides ◽  
Metal Dichalcogenides ◽  
The Continuum

scholarly journals Exciton condensate in bilayer transition metal dichalcogenides: Strong coupling regime

2017 ◽  
Vol 96 (17) ◽  
Author(s):  
Bishwajit Debnath ◽  
Yafis Barlas ◽  
Darshana Wickramaratne ◽  
Mahesh R. Neupane ◽  
Roger K. Lake
Keyword(s):  
Transition Metal ◽  
Strong Coupling ◽  
Transition Metal Dichalcogenides ◽  
Strong Coupling Regime ◽  
Exciton Condensate ◽  
Metal Dichalcogenides

scholarly journals Valley excitons in two-dimensional semiconductors

2015 ◽  
Vol 2 (1) ◽  
pp. 57-70 ◽  
Author(s):  
Hongyi Yu ◽  
Xiaodong Cui ◽  
Xiaodong Xu ◽  
Wang Yao
Keyword(s):  
Transition Metal ◽  
Bound States ◽  
Degrees Of Freedom ◽  
Transition Metal Dichalcogenides ◽  
Visible Range ◽  
Two Dimensional ◽  
New Class ◽  
Strong Coulomb ◽  
Metal Dichalcogenides ◽  
Direct Band

Abstract Monolayer group-VIB transition-metal dichalcogenides have recently emerged as a new class of semiconductors in the two-dimensional limit. The attractive properties include the visible range direct band gap ideal for exploring optoelectronic applications; the intriguing physics associated with spin and valley pseudospin of carriers which implies potentials for novel electronics based on these internal degrees of freedom; the exceptionally strong Coulomb interaction due to the two-dimensional geometry and the large effective masses. The physics of excitons, the bound states of electrons and holes, has been one of the most actively studied topics on these two-dimensional semiconductors, where the excitons exhibit remarkably new features due to the strong Coulomb binding, the valley degeneracy of the band edges and the valley-dependent optical selection rules for interband transitions. Here, we give a brief overview of the experimental and theoretical findings on excitons in two-dimensional transition-metal dichalcogenides, with focus on the novel properties associated with their valley degrees of freedom.

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