Lattice softening effects at the Mott critical point of Cr-doped V$_2$O$_3$

Details Lattice softening effects at the Mott critical point of Cr-doped V$_2$O$_3$ Lattice softening effects at the Mott critical point of Cr-doped V$_2$O$_3$

2010-12-02

arxiv.org/abs/1012.0515v2

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

We have performed sound velocity measurements in (V$_{1-x}$Cr$_x$)$_2$O$_3$ in the vicinity of the critical point of the first order Mott transition line. The pressure sweeps at constant temperature reveal a large dip in the $c_{33}$ compression modulus, this dip sharpens as the critical point is approached. We do not observe signs of criticality on the shear modulus $c_{44}$ which is consistent with a transition governed by a scalar order parameter, in accordance with the DMFT description of the transition. However, the amplitude of the effect is an order of magnitude smaller than the one obtained from DMFT calculations for a single band Hubbard model. We analyze our results using a simple model with the electronic response function obtained from the scaling relations for the conductivity.

Affiliated with

Also associated with

No associations

Rating

Lattice softening effects at the Mott critical point of Cr-doped V$_2$O$_3$ 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 Lattice softening effects at the Mott critical point of Cr-doped V$_2$O$_3$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lattice softening effects at the Mott critical point of Cr-doped V$_2$O$_3$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-604491