Bound states of a localized magnetic impurity in a superfluid of paired ultracold fermions
Name
Vernier-2011-Bound states of a lo.pdf
Size
800.96 KB
Format
Adobe PDF
Checksum (MD5)
308a77d0288c8aeb2ab8a5c643b80ec0
Author(s)
Vernier, Eric
Pekker, David
Zwierlein, Martin Wolfram
Demier, Eugene
Date Issued
March 2011
Journal
Physical review A
Publisher
American Physical Society
Citation
Vernier, Eric et al. “Bound States of a Localized Magnetic Impurity in a Superfluid of Paired Ultracold Fermions.” Physical Review A 83.3 (2011) : n. pag. ©2011 American Physical Society
Version
Final published version
Abstract
We consider a localized impurity atom that interacts with a cloud of fermions in the paired state. We develop
an effective scattering length description of the interaction between an impurity and a fermionic atom using their
vacuum scattering length. Treating the pairing of fermions at the mean-field level, we show that the impurity
atom acts like a magnetic impurity in the condensed matter context, and leads to the formation of a pair of Shiba
bound states inside the superconducting gap. In addition, the impurity atom can lead to the formation of deeply
bound states below the Fermi sea.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
MIT-Harvard Center for Ultracold Atoms
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevA.83.033619
