Scattering between minivalleys in a moiré material

Abstract

A unique feature of the complex band structures of moiré materials is the presence of minivalleys, their hybridization, and scattering between them. Here we investigate magneto-transport oscillations caused by scattering between minivalleys - a phenomenon analogous to magneto-intersubband oscillations - in a twisted double bilayer graphene sample with a twist angle of 1.94°. We study and discuss the potential scattering mechanisms and find an electron-phonon mechanism and valley conserving scattering to be likely. Finally, we discuss the relevance of our findings for different materials and twist angles.

4 figures

References in corpus (7)

• The electronic properties of graphene
• Temperature dependent transport in suspended graphene
• High-temperature quantum oscillations caused by recurring Bloch states in graphene superlattices
• Hofstadter butterfly and the quantum Hall effect in twisted double bilayer graphenes
• Strong interminivalley scattering in twisted bilayer graphene revealed by high-temperature magnetooscillations
• Full Slonczewski-Weiss-McClure parametrization of few-layer twistronic graphene
• Electron transport in dual-gated three-layer MoS${}_2$

Cited by in corpus (13)

• Mixed-Stacking Few-Layer Graphene as an Elemental Weak Ferroelectric Material
• Spectroscopic signatures of tetralayer graphene polytypes
• Strange metallicity of moiré twisted bilayer graphene
• High-mobility compensated semimetals, orbital magnetization, and umklapp scattering in bilayer graphene moire superlattices
• Interplay of Landau quantization and interminivalley scatterings in a weakly coupled moiré superlattice
• Quantum oscillations in field-induced correlated insulators of a moiré superlattice
• Kagomé quantum oscillations in graphene superlattices
• Weak localization on moiré superlattice in twisted double bilayer graphene
• Perpendicular electronic transport and moiré-induced resonance in twisted interfaces of three-dimensional graphite
• Heavy fermion phase diagram in magic-angle twisted trilayer graphene
• Shift current response in twisted double bilayer graphenes
• Weak Localization and Antilocalization in Twisted Bilayer Graphene
• Electronic Reconstruction at the Quasicrystal-Moiré Crossover in Twisted Bilayer Graphene