Possible Sliding Regimes in Twisted Bilayer WTe_{2}.

Area of Science:

• Condensed Matter Physics
• Materials Science

Background:

• Twisted transition metal dichalcogenides (tTMDs) exhibit rich electronic properties.
• One-dimensional (1D) behavior is observed in twisted WTe2 (tWTe2) at low temperatures.

Purpose of the Study:

• Theoretically investigate exotic sliding regimes in tWTe2.
• Explore potential electronic phases in both hole- and electron-doped tWTe2.
• Analyze dimensional crossovers and interwire transport phenomena.

Main Methods:

• Theoretical modeling of coupled one-dimensional electron gases (1DEGs).
• Analysis of different doping regimes (hole vs. electron) and their implications.
• Consideration of interwire couplings and their effects on electronic phases.

Main Results:

• Hole-doped tWTe2 behaves as coupled two-flavor 1DEGs.
• Electron-doped tWTe2 acts as coupled four-flavor 1DEGs, enabling novel phases.
• Identified potential for 4kF charge-density-wave and charge-4e superconductivity in electron-doped systems.
• A sliding Luther-Emery liquid model aligns with experimental observations in hole-doped tWTe2.

Conclusions:

• tWTe2 offers a platform for realizing diverse 1D electronic phases.
• The interplay of doping, dimensionality, and interwire coupling dictates emergent phenomena.
• Theoretical findings provide a framework for understanding and predicting tWTe2 behavior.