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Host Nuclear Magnetic Resonance in Copper‐Based Magnetic Alloys
Author(s) -
Thiemann J.
Publication year - 1978
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220880204
Subject(s) - condensed matter physics , impurity , copper , conduction electron , electron , magnetic impurity , materials science , electron paramagnetic resonance , spin (aerodynamics) , thermal conduction , anderson impurity model , amplitude , coupling (piping) , kondo effect , coupling constant , coherence (philosophical gambling strategy) , chemistry , nuclear magnetic resonance , physics , thermodynamics , organic chemistry , quantum mechanics , particle physics , metallurgy , composite material
The lineshape of the bulk Cu 63 NMR signal of the Kondo systems _Cu—Mn, _Cu—Fe, and _Cu—Co is investigated experimentally as a function of the temperature and of the concentration of the dilute magnetic impurities. The measurements are compared with Monte‐Carlo simulated line‐shapes broadened by charge density oscillations as well as spin density oscillations of the conduction electrons in the surrounding of the impurity atoms. The increasing coupling between the impurity and the conduction electrons with decreasing temperatures ( T < T K ) leads to a reduction in the amplitude of charge density oscillations in the range of the coherence length. The analysis of the experimental data gives the coupling constant | J sd | of the different Kondo systems, showing the minimum value of | J sd | in the middle of the 3d series for _Cu—Mn.