Theory of Spin Relaxation for Arbitrary Time Scale.IV.Numerical Analysis and Simple Formulae
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概要
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Detailed numerical analysis is made on the transverse relaxation process and onthe power spectrum. These are expressed in terms of a superposition of 2J-func-lions fJ the magnitude of spine. For the transverse relaxation process with initialconditions far from equilibrium state, these 2J functions do contribute especiallyat an early stage of time-evolution; near the equilibrium, only a single functionwith the minimum eigenvalue survives.Due to the nonlinearities, under certain circumstances, average of the tran-sverse component of spins enhances itself to reach a maximum value and decreasesas the time evolves : This is recognized as a phase coherence phenomenon inducedby the nonlinear effect and is out of the scope of the usual linear theory.The power spectrum is, however, determined essentially by the single functionand consequently, simple rules are deduced from the numerical analysis, even forarbitrary value of J. Analysis on the "Cole-Cole" diagram suggests a sort ofuniversality in the relaxation process.
- 社団法人日本物理学会の論文
- 1982-09-15
著者
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Hamano Yoko
Department Of Physics Faculty Of Science Ochanomizu University
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Hamano Yoko
Department Of Physics Faculty Of Science Ochanomizu University:department Of Pure And Applied Scienc
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Shibata Fumiaki
Department Of Physices Faculty Of Science Ochanomizu University
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