Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session S08: Superconductivity in Heavy Fermion Compounds and Other Platforms
8:00 AM–11:00 AM,
Thursday, March 7, 2024
Room: L100I
Sponsoring
Unit:
DCMP
Chair: Peter Czajka, NIST
Abstract: S08.00010 : Screening clouds in Superconductors*
9:48 AM–10:00 AM
Presenter:
Anand Manaparambil
(Adam Mickiewicz University in Poznan)
Authors:
Anand Manaparambil
(Adam Mickiewicz University in Poznan)
Pascu Moca
(University of Oradea, Romania)
Gergely Zarand
(Budapest University of Technology and Ec)
Ireneusz Weymann
(Adam Mickiewicz University)
Magnetic impurities coupled to conduction band can generate a many-body correlated screening cloud known as the Kondo cloud. In the presence of superconducting correlations, there can exist Yu-Shiba-Rusinov (YSR) phase in addition to the Kondo phase that can also generate screening clouds across the superconductor. Since, a conduction band can only screen one-half spin per channel, a large spin impurity coupled to the conduction band can generate what is known as the Underscreened Kondo effect. The spatial extension of the screening cloud in such a partially screened impurity coupled to a superconductor remains to be described.
Therefore, in this work, we focus on a large spin impurity coupled to a superconducting reservoir. We observe a doublet to triplet phase transition corresponding to the underscreened Kondo and YSR states in the system. Interestingly, the underscreened Kondo screening cloud shows additional properties resulting from the unscreened part of the impurity interacting with the superconductor. The screening imparted by the clouds and its spatial extension have been extracted using the Numerical Renormalization Group (NRG) method and the Density Matrix Renormalization Group (DMRG) method respectively.
*This work was supported by the National Science Center of Poland through the Grant Nr: 2021/41/N/ST3/02098.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700