Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-05-05
Phys. Rev. Lett. 98, 026402 (2007)
Physics
Condensed Matter
Strongly Correlated Electrons
new Figure 2, new results on spin susceptibility, some minor changes to text
Scientific paper
We study the deconfined quantum critical point of the Kondo-Heisenberg lattice in three dimensions using a fermionic representation for the localized spins. The mean-field phase diagram exhibits a zero temperature quantum critical point separating a spin liquid phase where the hybridization vanishes and a Kondo phase where it does not. Two solutions can be stabilized in the Kondo phase, namely a uniform hybridization when the band masses of the conduction electrons and the spinons have the same sign, and a modulated one when they have opposite sign. For the uniform case, we show that above a very small temperature scale, the critical fluctuations associated with the vanishing hybridization have dynamical exponent z=3, giving rise to a resistivity that has a T log T behavior. We also find that the specific heat coefficient diverges logarithmically in temperature, as observed in a number of heavy fermion metals.
Norman Michael R.
Paul Indranil
Pepin Catherine
No associations
LandOfFree
Kondo Breakdown and Hybridization Fluctuations in the Kondo-Heisenberg Lattice 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 Kondo Breakdown and Hybridization Fluctuations in the Kondo-Heisenberg Lattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kondo Breakdown and Hybridization Fluctuations in the Kondo-Heisenberg Lattice will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-607835