Importance of electron-phonon coupling near the electron-liquid to Wigner-crystal transition in two-dimensional atomically thin materials

Abstract

We study the effect of electron-phonon coupling on the location of the Fermi Liquid to Wigner Crystal transition in the two-dimensional electron gas realized in various material platforms. Based on dimensional estimates of the relevant parameters, we conclude that (as conventionally assumed) phonons are negligible in traditional semiconductor quantum well systems, but likely play a significant role in various recently synthesized atomically thin two-dimensional materials.

4 + 4 pages, 2 figures

References in corpus (10)

• Signatures of bilayer Wigner crystals in a transition metal dichalcogenide heterostructure
• Observation of Wigner crystal of electrons in a monolayer semiconductor
• Phase Diagram of the Low-Density Two-Dimensional Homogeneous Electron Gas
• Melting of a 2D Quantum Electron Solid in High Magnetic Field
• Direct observation of a magnetic field-induced Wigner crystal
• Microwave Resonance of 2D Wigner Crystal around integer Landau fillings
• Generalized Wigner crystallization in moiré materials
• NMR profiling of quantum electron solids in high magnetic fields
• Melting of generalized Wigner crystals in transition metal dichalcogenide heterobilayer Moiré systems
• Upper bound on the window of density occupied by microemulsion phases in two-dimensional electron systems