Diffusion of Positive Muon in Pure Iron II. Spin Relaxation

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概要

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• Spin relaxation time of positive muon diffusing by means of the hopping andthe coherent motions in ferromagnetic b.c.c. Iron is calculated. With decrease oftemperature, the relaxation time decreases in proportion to the diffusion constant,but it deviates from this behavior below about 100 K owing to an onset of thecoherent motion and finally it again decreases in inverse projvortion to a lifetimeof band states formed by the coherent motion, whereas the diffusion constantsimply turns increasing. The spin in a band state feels a definite magnetic fieldbecause of periodic internal fields and sees various fields when scattered to otherband states. These scattering processes result in the motional narrowing. Acomparison with experiment shows that positive muon in pure Iron performs thecoherent motion with a mean-free path being several times as long as the latticeconstant.

• 一般社団法人日本物理学会の論文
• 1979-06-15

著者

• FUJII Syuso

  Department of Physics, University of Tokyo

関連論文

• A Quantum Theory of Atomic Diffusion in a Model Crystal
• Spin Relaxation and Coherent Motion of Positive Muon in Antiferromagnetic Chromium
• Diffusion of Positive Muon in Pure Iron II. Spin Relaxation

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