%0 Journal Article %1 PhysRevLett.130.066401 %A Chatzieleftheriou, Maria %A Kowalski, Alexander %A Berović, Maja %A Amaricci, Adriano %A Capone, Massimo %A De Leo, Lorenzo %A Sangiovanni, Giorgio %A de' Medici, Luca %D 2023 %I American Physical Society %J Phys. Rev. Lett. %K a %N 6 %P 066401 %R 10.1103/PhysRevLett.130.066401 %T Mott quantum critical points at finite doping %U https://link.aps.org/doi/10.1103/PhysRevLett.130.066401 %V 130 %X We demonstrate that a finite-doping quantum critical point (QCP) naturally descends from the existence of a first-order Mott transition in the phase diagram of a strongly correlated material. In a prototypical case of a first-order Mott transition the surface associated with the equation of state for the homogeneous system is “folded” so that in a range of parameters stable metallic and insulating phases exist and are connected by an unstable metallic branch. Here we show that tuning the chemical potential, the zero-temperature equation of state gradually unfolds. Under general conditions, we find that the Mott transition evolves into a first-order transition between two metals, associated with a phase separation region ending in the finite-doping QCP. This scenario is here demonstrated solving a minimal multiorbital Hubbard model relevant for the iron - based superconductors, but its origin - the splitting of the atomic ground state multiplet by a small energy scale, here Hund’s coupling-is much more general. A strong analogy with cuprate superconductors is traced.

@article{PhysRevLett.130.066401, abstract = {We demonstrate that a finite-doping quantum critical point (QCP) naturally descends from the existence of a first-order Mott transition in the phase diagram of a strongly correlated material. In a prototypical case of a first-order Mott transition the surface associated with the equation of state for the homogeneous system is “folded” so that in a range of parameters stable metallic and insulating phases exist and are connected by an unstable metallic branch. Here we show that tuning the chemical potential, the zero-temperature equation of state gradually unfolds. Under general conditions, we find that the Mott transition evolves into a first-order transition between two metals, associated with a phase separation region ending in the finite-doping QCP. This scenario is here demonstrated solving a minimal multiorbital Hubbard model relevant for the iron - based superconductors, but its origin - the splitting of the atomic ground state multiplet by a small energy scale, here Hund’s coupling-is much more general. A strong analogy with cuprate superconductors is traced.}, added-at = {2023-05-16T10:53:27.000+0200}, author = {Chatzieleftheriou, Maria and Kowalski, Alexander and Berović, Maja and Amaricci, Adriano and Capone, Massimo and De Leo, Lorenzo and Sangiovanni, Giorgio and de' Medici, Luca}, biburl = {https://www.bibsonomy.org/bibtex/2564055e586a9497c61b0146c0b063bac/ctqmat}, day = 07, description = {Mott quantum critical points at finite doping}, doi = {10.1103/PhysRevLett.130.066401}, interhash = {a0edc3900c433965e846c1a29b6b8cda}, intrahash = {564055e586a9497c61b0146c0b063bac}, journal = {Phys. Rev. Lett.}, keywords = {a}, month = {02}, number = 6, numpages = {7}, pages = 066401, publisher = {American Physical Society}, timestamp = {2023-05-16T10:53:27.000+0200}, title = {Mott quantum critical points at finite doping}, url = {https://link.aps.org/doi/10.1103/PhysRevLett.130.066401}, volume = 130, year = 2023 }