Critical quasiparticle theory: Scaling, thermodynamic and transport properties

Abstract

We use the recently developed critical quasiparticle theory to derive the scaling behavior associated with a quantum critical point (QCP) in a correlated metal. This is applied to the magnetic-field induced QCP observed in YbRh${}_2$Si${}_2$ (YRS), for which we also derive the critical behavior of the specific heat, resistivity, Gr{\" u}neisen coefficient, and the thermopower. The theory accounts very well for the experimental results

7 pages, 5 figures

References in corpus (5)

• Multiple energy scales at a quantum critical point
• Divergence of the Magnetic Grüneisen Ratio at the Field-Induced Quantum Critical Point in YbRh${}_2$Si${}_2$
• Quasiparticles beyond the Fermi liquid and heavy fermion criticality
• Separation of energy scales in undoped YbRh${}_2$Si${}_2$ under hydrostatic pressure
• Break up of heavy fermions at an antiferromagnetic instability