Phonon-limited resistivity of multilayer graphene systems

Abstract

We calculate the theoretical contribution to the doping and temperature ($T$) dependence of electrical resistivity due to scattering by acoustic phonons in Bernal bilayer graphene (BBG) and rhombohedral trilayer graphene (RTG). We focus on the role of nontrivial geometric features of the detailed, anisotropic $k\cdot p$ band structures of these systems - e.g. Van Hove singularities, Lifshitz transitions, Fermi surface anisotropy, and band curvature near the gap - whose effects on transport have not yet been systematically studied. We find that these geometric features strongly influence the temperature and doping dependencies of the resistivity. In particular, the band geometry leads to a nonlinear $T$-dependence in the high-$T$ equipartition regime, complicating the usual $T^4$ to $T$ Bloch-Grüneisen crossover. Our focus on BBG and RTG is motivated by recent experiments in these systems that have discovered several exotic low-$T$ superconductivity proximate to complicated hierarchies of isospin-polarized phases. These interaction-driven phases are intimately related to the geometric features of the band structures, highlighting the importance of understanding the influence of band geometry on transport. While resolving the effects of the anisotropic band geometry on the scattering times requires nontrivial numerical solution, our approach is rooted in intuitive Boltzmann theory. We compare our results with recent experiment and discuss how our predictions can be used to elucidate the relative importance of various scattering mechanisms in these systems.

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• Unconventional quantum Hall effect and Berry's phase of 2pi in bilayer graphene
• Controlling electron-phonon interactions in graphene at ultra high carrier densities
• Flat Bands in Slightly Twisted Bilayer Graphene
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• Band Structure of ABC-Stacked Graphene Trilayers
• Phonon-limited resistivity of graphene by first-principle calculations: electron-phonon interactions, strain-induced gauge field and Boltzmann equation
• Acoustic-phonon-mediated superconductivity in rhombohedral trilayer graphene
• Chirality-dependent phonon-limited resistivity in multiple layers of graphene
• Acoustic-phonon-mediated superconductivity in moiréless graphene multilayers

Cited by in corpus (4)

• Theory of phonon spectroscopy with the quantum twisting microscope
• Acoustic phonon contribution to the resistivity of twisted bilayer graphene
• Fluctuating magnetism and Pomeranchuk effect in multilayer graphene
• The kinetic theory of ultra-subsonic fermion systems and applications to flat band magic angle twisted bilayer graphene