Mott physics and first-order transition between two metals in the normal state phase diagram of the two-dimensional Hubbard model

Details Mott physics and first-order transition between two metals in the normal state phase diagram of the two-dimensional Hubbard model Mott physics and first-order transition between two metals in the normal state phase diagram of the two-dimensional Hubbard model

2011-02-02

arxiv.org/abs/1102.0463v2

Phys. Rev. B 84, 075161 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

27 pages, 16 figures, LaTeX, published version

Scientific paper

10.1103/PhysRevB.84.075161

For doped two-dimensional Mott insulators in their normal state, the challenge is to understand the evolution from a conventional metal at high doping to a strongly correlated metal near the Mott insulator at zero doping. To this end, we solve the cellular dynamical mean-field equations for the two-dimensional Hubbard model using a plaquette as the reference quantum impurity model and continuous-time quantum Monte Carlo method as impurity solver. The normal-state phase diagram as a function of interaction strength $U$, temperature $T$, and filling $n$ shows that, upon increasing $n$ towards the Mott insulator, there is a surface of first-order transition between two metals at nonzero doping. That surface ends at a finite temperature critical line originating at the half-filled Mott critical point. Associated with this transition, there is a maximum in scattering rate as well as thermodynamic signatures. These findings suggest a new scenario for the normal-state phase diagram of the high temperature superconductors. The criticality surmised in these systems can originate not from a T=0 quantum critical point, nor from the proximity of a long-range ordered phase, but from a low temperature transition between two types of metals at finite doping. The influence of Mott physics therefore extends well beyond half-filling.

Affiliated with

Also associated with

No associations

Rating

Mott physics and first-order transition between two metals in the normal state phase diagram of the two-dimensional Hubbard model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Mott physics and first-order transition between two metals in the normal state phase diagram of the two-dimensional Hubbard model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mott physics and first-order transition between two metals in the normal state phase diagram of the two-dimensional Hubbard model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-81359