@article{f272d9f547a847cb97baf58deb6bd45e,
title = "Critical local moment fluctuations and enhanced pairing correlations in a cluster Anderson model",
abstract = "The appearance of unconventional superconductivity near heavy-fermion quantum critical points (QCPs) motivates investigation of pairing correlations close to a {"}beyond Landau{"} Kondo-destruction QCP. We focus on a two-Anderson-impurity cluster in which Kondo destruction is induced by a pseudogap in the conduction-electron density of states. Analysis via continuous-time quantum Monte Carlo and the numerical renormalization group reveals a previously unstudied QCP that both displays the critical-local moment fluctuations characteristic of Kondo destruction and leads to a strongly enhanced singlet-pairing susceptibility. Our results provide insights into the mechanism for superconductivity in quantum critical metals.",
author = "Ang Cai and Pixley, {J. H.} and Kevin Ingersent and Qimiao Si",
note = "Funding Information: We acknowledge useful discussions with Y. Chou, S. Kirchner, E. M. Nica, Z. Wang, and H. Xie, as well as technical support from the Center for Research Computing at Rice University. This work was supported in part by NSF Grant No. DMR-1920740 and the Robert A. Welch Foundation Grant No. C-1411 (A.C. and Q.S.), by JQI-NSF-PFC, LPS-MPO-CMTC, and Microsoft Q (J.H.P.), Grant No. 2018058 from the United States-Israel Binational Science Foundation (BSF), Jerusalem, Israel and by NSF Grant No. DMR-1508122 (K.I.). The computation was performed through the Extreme Science and Engineering Discovery Environment (XSEDE) under the support of the NSF Grant No. DMR170109, and on the Shared Computing Infrastructure funded by NSF under Grant No. OCI-0959097, NIH Award No. NCRR S10RR02950, and an IBM Shared University Research (SUR) Award in partnership with CISCO, Qlogic and Adaptive Computing, and Rice University. Publisher Copyright: {\textcopyright} 2020 American Physical Society.",
year = "2020",
month = jan,
day = "31",
doi = "10.1103/PhysRevB.101.014452",
language = "English (US)",
volume = "101",
journal = "Physical Review B-Condensed Matter",
issn = "0163-1829",
publisher = "American Institute of Physics",
number = "1",
}