Measurements of electron-spin density near Co atoms in Cu
- 1 April 1974
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 9 (7), 3077-3085
- https://doi.org/10.1103/physrevb.9.3077
Abstract
We report nuclear-magnetic-resonance studies of Cu Co in which we resolve and identify satellites due to three shells of Cu near neighbors around isolated Co impurities. The satellite positions show that the spatial form of the spin polarization oscillates with distance and that the conduction electrons on these atoms contribute about —8% of the total impurity susceptibility. The splittings are measured from 1.5 to 450°K and from 6.4 to 63 kG and compared with the susceptibility of singles. The width of the main line is decomposed into contributions and from isolated Co atoms and pairs of Co atoms, respectively, by use of the temperature variation of the splitting and of the pair susceptibility . the theory of Walstedt and Walker is used to show that agrees with what one would expect from the satellite splittings, and that is reasonable in terms of the magnitude and temperature dependence of and . The results are scaled to CuFe to show that much of the observed linewidth anomaly is of the same origin, and must be included before possible conclusions can be made about Kondo correlation effects.
Keywords
This publication has 22 references indexed in Scilit:
- Magnetic hyperfine interaction studies of magnetic impurities in metalsC R C Critical Reviews in Solid State Sciences, 1972
- Spin polarization around magnetic impuritiesPhysics Letters A, 1972
- AuVandAlMn: Kondo Systems or Localized Spin-Fluctuation Systems?Physical Review Letters, 1971
- Magnetic Field Effects in theExchange Model of Dilute Magnetic AlloysPhysical Review B, 1970
- Exact Results in the Kondo Problem. II. Scaling Theory, Qualitatively Correct Solution, and Some New Results on One-Dimensional Classical Statistical ModelsPhysical Review B, 1970
- Exact Results for the Kondo Problem: One-Body Theory and Extension to Finite TemperaturePhysical Review B, 1970
- Equivalence of Localized Spin Fluctuations and the Kondo-Nagaoka Spin-Compensated StatePhysical Review Letters, 1968
- Localized Magnetic Impurity States In Metals: Some Experimental RelationshipsReviews of Modern Physics, 1968
- Self-Consistent Treatment of Kondo's Effect in Dilute AlloysPhysical Review B, 1965
- Resistance Minimum in Dilute Magnetic AlloysProgress of Theoretical Physics, 1964