Effect of zero point motion on the hyperfine field at an interstitial positive muon site in ferromagnetic Ni |
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Authors: | J. Rath M. Manninen P. Jena C.S. Wang |
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Affiliation: | Medidata, Searle Laboratory Inc., Skokie, IL 60076, U.S.A.;Argonne National Laboratory, Argonne, IL 60439, U.S.A.;Physics Department, Michigan Technological University, Houghton, MI 49931, U.S.A.;Physics Department, Northwestern University Evanston, IL 60201, U.S.A. |
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Abstract: | Using the inhomogeneous electron charge and spin density distribution around the octahedral site in ferromagnetic nickel from a self-consistent band structure scheme, and the abiabatic approximation, we have calculated the muon hyperfine field as a function of the muon displacement. By folding the electron spin density at the vibrating muon site obtained in a self-consistent Kohn-Sham scheme with the finite width of the muon wave function, we find a striking effect on the average muon hyperfine field. The result agrees better with the experiment than earlier calculations based on the jellium model. |
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