Mapping the dynamic properties of electron spins in the organic conductor (FA)2PF6
| Autor: | Elmar Dormann, A Feintuch, J. Gmeiner, A. Grayevsky, A. Gabay, Noam Kaplan, T. Tashma |
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| Rok vydání: | 2003 |
| Předmět: |
Condensed matter physics
Spins Chemistry Mechanical Engineering Relaxation (NMR) Metals and Alloys Spin–lattice relaxation Electron Condensed Matter Physics Electronic Optical and Magnetic Materials Conductor Spin–spin relaxation Mechanics of Materials Materials Chemistry Spin diffusion Spin (physics) |
| Zdroj: | Synthetic Metals. 132:161-171 |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/s0379-6779(02)00210-2 |
| Popis: | Pulsed ESR is used for microscopic three-dimensional imaging of the conduction electron spin properties in the organic crystal (FA) 2 PF 6 (FA: fluoranthene). The measurements enable a study of the local properties of the electron spins on the scale of ∼30 μm. The ‘local’ aspect of the information gained is found to be important, as the images generally exhibit pronounced inhomogeneity. The properties investigated so far are spin relaxation times and mobility. The relaxation times, T 1 and T 2 , were found each to vary by a factor of ∼2 within the samples, and their variations are highly correlated with one another. The spin diffusion might be varying too, in negative correlation with the relaxation times. Viewing the relaxation maps, surface effects are also discernible in some of the samples. |
| Databáze: | OpenAIRE |
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