scholarly journals All-optical materials design of chiral edge modes in transition-metal dichalcogenides

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Martin Claassen ◽  
Chunjing Jia ◽  
Brian Moritz ◽  
Thomas P. Devereaux
Keyword(s):  
Transition Metal ◽  
Optical Materials ◽  
Transition Metal Dichalcogenides ◽  
Materials Design ◽  
All Optical ◽  
Metal Dichalcogenides

scholarly journals All-optical nonreciprocity due to valley polarization pumping in transition metal dichalcogenides

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Sriram Guddala ◽  
Yuma Kawaguchi ◽  
Filipp Komissarenko ◽  
Svetlana Kiriushechkina ◽  
Anton Vakulenko ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Vital Role ◽  
Practical Applications ◽  
Propagation Of Light ◽  
Intervalley Scattering ◽  
All Optical ◽  
Valley Polarization ◽  
Metal Dichalcogenides ◽  
Pass Through

AbstractNonreciprocity and nonreciprocal optical devices play a vital role in modern photonic technologies by enforcing one-way propagation of light. Here, we demonstrate an all-optical approach to nonreciprocity based on valley-selective response in transition metal dichalcogenides (TMDs). This approach overcomes the limitations of magnetic materials and it does not require an external magnetic field. We provide experimental evidence of photoinduced nonreciprocity in a monolayer WS2 pumped by circularly polarized (CP) light. Nonreciprocity stems from valley-selective exciton population, giving rise to nonlinear circular dichroism controlled by CP pump fields. Our experimental results reveal a significant effect even at room temperature, despite considerable intervalley-scattering, showing promising potential for practical applications in magnetic-free nonreciprocal platforms. As an example, here we propose a device scheme to realize an optical isolator based on a pass-through silicon nitride (SiN) ring resonator integrating the optically biased TMD monolayer.

Lithium adsorption on 2D transition metal dichalcogenides: towards a descriptor for machine learned materials design

2020 ◽  
Vol 8 (44) ◽  
pp. 23511-23518 ◽  
Author(s):  
Maofeng Dou ◽  
Maria Fyta
Keyword(s):  
Transition Metal ◽  
Adsorption Energy ◽  
Transition Metal Dichalcogenides ◽  
Materials Design ◽  
Single Atom ◽  
P Adsorption ◽  
Metal Dichalcogenides

Adsorption energy: an efficient descriptor for prediction of single-atom adsorption on 2D TMDs.

scholarly journals Super-resolved Optical Mapping of Reactive Sulfur-Vacancies in Two-Dimensional Transition Metal Dichalcogenides

ACS Nano ◽  
2021 ◽  
Author(s):  
Miao Zhang ◽  
Martina Lihter ◽  
Tzu-Heng Chen ◽  
Michal Macha ◽  
Archith Rayabharam ◽  
...  
Keyword(s):  
Transition Metal ◽  
Optical Mapping ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
Metal Dichalcogenides

Highly electroconductive and uniform WS2 film growth by sulfurization of W film using diethyl sulfide

2021 ◽  
Author(s):  
Yoobeen Lee ◽  
Jin Won Jung ◽  
Jin Seok Lee
Keyword(s):  
Transition Metal ◽  
Grain Boundaries ◽  
High Performance ◽  
Film Growth ◽  
Transition Metal Dichalcogenides ◽  
Electronic Systems ◽  
Intrinsic Defects ◽  
Diethyl Sulfide ◽  
Metal Dichalcogenides

The reduction of intrinsic defects, including vacancies and grain boundaries, remains one of the greatest challenges to produce high-performance transition metal dichalcogenides (TMDCs) electronic systems. A deeper comprehension of the...

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