Journalartikel

Jahr der Veröffentlichung: 1995

Seiten: 5776-5780

Zeitschrift: The Journal of Chemical Physics

Bandnummer: 103

Heftnummer: 13

ISSN: 0021-9606

DOI Link: https://doi.org/10.1063/1.470458

Verlag: American Institute of Physics

Abstract: 
We investigate by Monte Carlo simulations the frequency dependent conductivity sigma(omega,T) and the spin lattice relaxation rate 1/T-1(omega,T) due to the hopping motion of noninteracting particles in an uncorrelated and correlated disordered energy landscape. The conductivity shows a pronounced dispersion at low temperatures in both the correlated and the uncorrelated case, reminiscent of the non-Debye behavior observed in many disordered materials. In contrast, 1/T-1(omega,T) exhibits the typical non-BPP form for uncorrelated energy disorder, but obeys an ordinary BPP-type behavior in the presence of finite correlations. Our results show that in general a simple relation between sigma(omega,T) and 1/T-1(omega,T) does not exist and that it might be difficult to account for the experimental findings, if interactions between the mobile particles are neglected. (C) 1995 American Institute of Physics.

Harvard-Zitierstil: MAASS, P. and MEYER, M. (1995) CONDUCTIVITY VERSUS SPIN-LATTICE RELAXATION - CONTRASTING BEHAVIOR IN A CORRELATED DISORDERED STRUCTURE, The Journal of Chemical Physics, 103(13), pp. 5776-5780. https://doi.org/10.1063/1.470458

APA-Zitierstil: MAASS, P., & MEYER, M. (1995). CONDUCTIVITY VERSUS SPIN-LATTICE RELAXATION - CONTRASTING BEHAVIOR IN A CORRELATED DISORDERED STRUCTURE. The Journal of Chemical Physics. 103(13), 5776-5780. https://doi.org/10.1063/1.470458