Hassan, SR and Georges, A and Krishnamurthy, HR (2005) Sound Velocity Anomaly at the Mott Transition: Application to Organic Conductors and V2O3. In: Physical Review Letters, 94 (3).
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Close to the Mott transition, lattice degrees of freedom react to the softening of electron degrees of freedom. This results in a change of lattice spacing, a diverging compressibility, and a critical anomaly of the sound velocity. These effects are investigated within a simple model, in the framework of dynamical mean-field theory. The results compare favorably to recent experiments on the layered organic-conductor kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl. We predict that effects of a similar magnitude are expected for V2O3, despite the much larger value of the elastic modulus of this material.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to The American Physical Society.|
|Department/Centre:||Division of Physical & Mathematical Sciences > Physics|
|Date Deposited:||04 Jun 2010 10:28|
|Last Modified:||19 Sep 2010 06:01|
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