Grüneisen ratio at the Kondo breakdown quantum critical point

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dc.creatorKim, K. -S.
dc.creatorBenlagra, A.
dc.creatorPépin, C.
dc.date2008-08-28
dc.date2008-10-15
dc.date.accessioned2026-07-07T12:27:29Z
dc.date.available2026-07-07T12:27:29Z
dc.descriptionWe show that the scenario of multi-scale Kondo breakdown quantum critical point (QCP) gives rise to a divergent Grüneisen ratio with an anomalous exponent 0.7. In particular, we fit the experimental data of $YbRh_{2}(Si_{0.95}Ge_{0.05})_{2}$ for specific heat, thermal expansion, and Grüneisen ratio based on our simple analytic expressions. A reasonable agreement between the experiment and theory is found for the temperature range between 0.4 K and 10 K. We discuss how the Grüneisen ratio is a key measurement to discriminate between the Kondo breakdown and spin-density wave theories.
dc.identifierhttps://arxiv.org/abs/0808.3908
dc.identifierhttp://arxiv.org/abs/0808.3908
dc.identifierPhys. Rev. Lett. 101, 246403 (2008)
dc.identifierdoi:10.1103/PhysRevLett.101.246403
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215226
dc.subjectStrongly Correlated Electrons
dc.titleGrüneisen ratio at the Kondo breakdown quantum critical point
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