Electronic Properties of MoS2-S/N Structure

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What kind of gap do single-layer and multi-layer transition metal dichalcogenides (TMD) have?

Direct gap for single-layer samples, indirect gap for multi-layer samples (correct)

Direct gap for both single-layer and multi-layer samples

Indirect gap for single-layer samples, direct gap for multi-layer samples

No gap for single-layer samples, direct gap for multi-layer samples

Why are semiconducting Transition Metal Dichalcogenides (TMD) particularly interesting for device applications?

They have promising electrical and optical properties (correct)

They are not sensitive to external conditions

They have a direct band gap in both single-layer and multi-layer samples

They are difficult to exfoliate

What property of two-dimensional materials has garnered significant attention recently?

Their resistance to external factors

Their structural and electronic properties (correct)

Their ability to form complex structures

Their high thermal conductivity

What is the focus of the discussion in the text related to excitonic effects?

The presence of excitonic effects in the discussed systems Signup and view all the answers

Which external conditions can significantly affect the electronic properties of Transition Metal Dichalcogenides (TMD)?

Temperature, pressure, or stress Signup and view all the answers

What differentiates the band structure of transition metal dichalcogenides in single-layer and multi-layer samples?

Multi-layer samples have a direct band gap, while single-layer samples have an indirect one Signup and view all the answers

What property of monolayer and few-layer samples of TMDs makes excitonic effects especially relevant in these compounds?

Reduced dielectric screening Signup and view all the answers

How can metallic behavior be induced in semiconducting TMDs similar to graphene?

By means of electric field effects or by doping Signup and view all the answers

What happens to the critical temperature Tc for superconductivity in MoS2 as carrier concentration increases?

It exhibits a superconducting dome with a maximum for a certain range of doping n Signup and view all the answers

What is one of the main limitations for the mobility of chemical vapor deposition grown single-layer MoS2?

Short-range disorder caused by vacancies or adatoms Signup and view all the answers

Which method has been used to study the effect of disorder on TMDs, including ab initio calculations and simulations of realistic samples?

Real space tight-binding (TB) methods Signup and view all the answers

Which material enhances the Andreev conductance of the MoS2-based S/N structure?

Tungsten disulfide Signup and view all the answers

What makes the existence of neutral and charged excitons in TMDs attractive for optoelectronic applications?

Their possible manipulation for optoelectronic applications Signup and view all the answers

In which publication did R.Roldán and colleagues explore the electronic properties of transition metal dichalcogenides?

Nano Letters Signup and view all the answers

Who conducted a study on the quantum properties of graphene in 2014?

X.Xu Signup and view all the answers

Which team focused on the applications of graphene in electronics in 2013?

K.F.Mak et al. Signup and view all the answers

In which publication did Z.Y.Zhu, Y.C.Cheng, and U.Schwingenschlögl examine graphene properties?

Physical Review B Signup and view all the answers

Who conducted experimental studies on graphene properties in 2012 in the journal Nature Physics?

G.Sallen et al. Signup and view all the answers