Hall Coefficient and Resistivity in the Doped Bilayer Hubbard Model
arXiv:2308.03862 · doi:10.1103/PhysRevB.109.075114
Abstract
Finding and understanding non-Fermi liquid transport behaviors are at the core of condensed matter physics. Most of the existing studies were devoted to the monolayer Hubbard model, which is the simplest model that captures essential features of high-temperature superconductivity. Here we discover a new type of non-Fermi liquid behavior emergent in the hole-doped bilayer Hubbard model, using dynamical mean-field theory with a full consideration of the short-range interlayer electron correlation. We find that at low temperatures, the Hall coefficient has a strong nonmonotonic dependence on temperature, leading to a double or quadruple reversal of its sign depending on the doping level. At the same time, the resistivity exhibits two plateaus rather than linearity in its temperature dependence. We show that these intriguing transport behaviors stem from the formation of coherent interlayer singlets, which scatter off gapped collective modes arising from short-range interlayer antiferromagnetic fluctuations.
6 pages, 3 figures
References in corpus (13)
- Continuous-time Monte Carlo methods for quantum impurity models
- Continuous-time auxiliary field Monte Carlo for quantum impurity models
- Planckian Dissipation in Metals
- Optical conductivity in cluster dynamical mean field theory: formalism and application to high temperature superconductors
- Charge transport in the Hubbard model at high temperatures: triangular versus square lattice
- Two-particle response in Cluster Dynamical Mean-Field Theory: Formalism and application to the Raman Response of High-temperature Superconductors
- Negative Hall coefficients of heavily overdoped La2-xSrxCuO4
- Multiple crossovers and coherent states in a Mott-Peierls insulator
- Bilayer Hubbard model: Analysis based on the fermionic sign problem
- Optical Conductivity of the two dimensional Hubbard model: vertex corrections, emergent Galilean invariance and the accuracy of the single-site dynamical mean field approximation
- Universal magnetic oscillations of DC conductivity in the incoherent regime of correlated systems
- Hall effect in doped Mott insulator: DMFT-approximation
- Superconductivity in bilayer - Hubbard models