%0 Journal Article %1 PhysRevB.109.045118 %A Poli, Arianna %A Wagner, Niklas %A Fischer, Max %A Toschi, Alessandro %A Sangiovanni, Giorgio %A Ciuchi, Sergio %D 2024 %I American Physical Society %J Phys. Rev. B %K a %N 4 %P 045118 %R 10.1103/PhysRevB.109.045118 %T Interacting nodal semimetals with nonlinear bands %U https://link.aps.org/doi/10.1103/PhysRevB.109.045118 %V 109 %X We investigate the quasiparticle and transport properties of a model describing interacting Dirac and Weyl semimetals in the presence of local Hubbard repulsion U, where we explicitly include a deviation from the linearity of the energy-momentum dispersion through an intermediate-energy scale Λ. Our focus lies on the correlated phase of the semimetal. At the nodal point, the renormalization of spectral weight at a fixed temperature T exhibits a weak dependence on Λ but is sensitive to the proximity to the Mott transition. Conversely, the scattering rate of quasiparticles and the resistivity display high-temperature exponents that crucially rely on Λ, leading to a crossover towards a conventional Fermi-liquid behavior at finite T. Finally, by employing the Nernst-Einstein relation for conductivity, we identify a corresponding density crossover as a function of the chemical potential.

@article{PhysRevB.109.045118, abstract = {We investigate the quasiparticle and transport properties of a model describing interacting Dirac and Weyl semimetals in the presence of local Hubbard repulsion U, where we explicitly include a deviation from the linearity of the energy-momentum dispersion through an intermediate-energy scale Λ. Our focus lies on the correlated phase of the semimetal. At the nodal point, the renormalization of spectral weight at a fixed temperature T exhibits a weak dependence on Λ but is sensitive to the proximity to the Mott transition. Conversely, the scattering rate of quasiparticles and the resistivity display high-temperature exponents that crucially rely on Λ, leading to a crossover towards a conventional Fermi-liquid behavior at finite T. Finally, by employing the Nernst-Einstein relation for conductivity, we identify a corresponding density crossover as a function of the chemical potential.}, added-at = {2024-03-26T10:20:05.000+0100}, author = {Poli, Arianna and Wagner, Niklas and Fischer, Max and Toschi, Alessandro and Sangiovanni, Giorgio and Ciuchi, Sergio}, biburl = {https://www.bibsonomy.org/bibtex/245b73df05154633b33ccbb7f192386f7/ctqmat}, day = 10, doi = {10.1103/PhysRevB.109.045118}, interhash = {1554238b7a2ac88ae285d75b320a13f8}, intrahash = {45b73df05154633b33ccbb7f192386f7}, journal = {Phys. Rev. B}, keywords = {a}, month = {01}, number = 4, numpages = {16}, pages = 045118, publisher = {American Physical Society}, timestamp = {2024-03-26T10:20:05.000+0100}, title = {Interacting nodal semimetals with nonlinear bands}, url = {https://link.aps.org/doi/10.1103/PhysRevB.109.045118}, volume = 109, year = 2024 }