Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session A30: Lattice Models of High-Tc Superconductors
8:00 AM–11:00 AM,
Monday, March 5, 2018
LACC Room: 406B
Sponsoring Unit: DCMP
Chair: Roser Valenti, Frankfurt University
Abstract: A30.00015 : Pairing correlation near Kondo-destruction quantum criticality*
10:48 AM–11:00 AM
(University of Florida)
How quantum criticality affects superconductivity is a central issue in strongly correlated systems. Particularly pressing is for the beyond-Landau quantum criticality, such as appearing in heavy fermion systems in the form of Kondo destruction . In addition, the superconducting Tc in systems such as Ce-115 is high as measured by the Fermi temperature. Thus motivated, we address the pairing instabilities near a Kondo destruction quantum critical point (QCP). We study the cluster Bose-Fermi Anderson model and, using the Cluster Extended-DMFT approach, the Anderson lattice model. We have identified a Kondo destruction QCP between a heavy Fermi liquid and an antiferromagnetic metal phase, and demonstrated enhanced pairing correlations in its vicinity . We also analyze the dependence of this effect on the spin anisotropy. Implications of our results for Ce-115 systems is discussed.
 Q. Si and F. Steglich, Science 329, 1161 (2010).
 A. Cai et al., to be published.
*NSF Grant No. DMR-1611392 & Robert A. Welch Foundation Grant No. C-1411.
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