Article Dans Une Revue Journal de Physique Année : 1990

One and two dimensional high temperature spin diffusion in molecular semiconductors

P. Petit
P. Spegt
  • Fonction : Auteur

Résumé

The frequency dependence of the proton spin lattice relaxation rate as a probe of the electron spin dynamics shows that the spin diffusion in the spin localized systems Pc2Y . CH2Cl2 and Pc2Lu is quasi one- and two-dimensional, respectively. The relaxation rates are measured in the frequency range 25-200 MHz. In both systems, the spin diffusion occurs only in the electronic frequency range. The diffusion rates and the anisotropies in these molecular semiconductors are quantitatively estimated and comparable to other spin localized systems. Pc2Lu is found to be a « highly two-dimensional » exchange coupled paramagnet.

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jpa-00212474 , version 1 (04-02-2008)

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P. Petit, P. Spegt. One and two dimensional high temperature spin diffusion in molecular semiconductors. Journal de Physique, 1990, 51 (15), pp.1645-1654. ⟨10.1051/jphys:0199000510150164500⟩. ⟨jpa-00212474⟩

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