This title appears in the Scientific Report :
2009
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevLett.102.056802 in citations.
Please use the identifier: http://hdl.handle.net/2128/7195 in citations.
Kondo Decoherence: finding the right spin model for iron impurities in gold and silver
Kondo Decoherence: finding the right spin model for iron impurities in gold and silver
We exploit the decoherence of electrons due to magnetic impurities, studied via weak localization, to resolve a long-standing question concerning the classic Kondo systems of Fe impurities in the noble metals gold and silver: which Kondo-type model yields a realistic description of the relevant mult...
Saved in:
Personal Name(s): | Costi, T. A. |
---|---|
Bergqvist, L. / Weichselbaum, A. / von Delft, J. / Micklitz, T / Rosch, A. / Mavropoulos, Ph. / Dederichs, P. H. / Mallet, F. / Saminadayar, L. / Bäuerle, C | |
Contributing Institute: |
Theorie der Strukturbildung; IFF-3 Quanten-Theorie der Materialien; IFF-1 Theoretische Nanoelektronik; IAS-3 Quanten-Theorie der Materialien; IAS-1 JARA-HPC JARA-FIT; JARA-FIT |
Published in: | Physical review letters, 102 (2009) S. 056802 |
Imprint: |
College Park, Md.
APS
2009
|
Physical Description: |
056802 |
DOI: |
10.1103/PhysRevLett.102.056802 |
Document Type: |
Journal Article |
Research Program: |
Non-equilibrium dynamics of fermionic atoms in optical lattices; transport at oxide interfaces (jiff23_20090701) Kondensierte Materie |
Series Title: |
Physical Review Letters
102 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/7195 in citations.
We exploit the decoherence of electrons due to magnetic impurities, studied via weak localization, to resolve a long-standing question concerning the classic Kondo systems of Fe impurities in the noble metals gold and silver: which Kondo-type model yields a realistic description of the relevant multiple bands, spin, and orbital degrees of freedom? Previous studies suggest a fully screened spin S Kondo model, but the value of S remained ambiguous. We perform density functional theory calculations that suggest S = 3/2. We also compare previous and new measurements of both the resistivity and decoherence rate in quasi-one-dimensional wires to numerical renormalization group predictions for S = 1/2, 1, and 3/2, finding excellent agreement for S = 3/2. |