Self-consistent slave rotor mean field theory for strongly correlated systems

Details Self-consistent slave rotor mean field theory for strongly correlated systems Self-consistent slave rotor mean field theory for strongly correlated systems

2007-06-18

arxiv.org/abs/0706.2657v5

Phys. Rev. B 76, 195101 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

final version, to appear in PRB; added reference to latest quantum oscillation experiments on YBa_2Cu_4O_8

Scientific paper

10.1103/PhysRevB.76.195101

Building on work by Florens and Georges, we formulate and study a self-consistent slave rotor mean field theory for strongly correlated systems. This approach views the electron, in the strong correlation regime, as a composite of a neutral spinon and a charged rotor field. We solve the coupled spinon-rotor model self-consistently using a cluster mean field theory for the rotors and various ansatzes for the spinon ground state. We illustrate this approach with a number of examples relevant to ongoing experiments in strongly correlated electronic systems such as: (i) the phase diagram of the isotropic triangular lattice organic Mott insulators, (ii) quasiparticle excitations and tunneling asymmetry in the weakly doped cuprate superconductors, and (iii) the cyclotron mass of carriers in commensurate spin-density wave and U(1) staggered flux (or d-density wave) normal states of the underdoped cuprates. We compare the estimated cyclotron mass with results from recent quantum oscillation experiments on ortho-II YBCO by N. Doiron-Leyraud et al (Nature 447, 565 [2007]) which appear to find hole pockets in the magnetic field induced normal state. We comment on the relation of this normal ground state to Fermi arcs seen in photoemission experiments above Tc. This slave rotor mean field theory can be generalized to study inhomogeneous states and strongly interacting models relevant to ultracold atoms in optical lattices.

Affiliated with

Also associated with

No associations

Rating

Self-consistent slave rotor mean field theory for strongly correlated systems 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 Self-consistent slave rotor mean field theory for strongly correlated systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-consistent slave rotor mean field theory for strongly correlated systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-280776