Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Harald Böttger"'
Publikováno v:
physica status solidi (b). 241:13-19
We discuss a kinetic model for glass-like relaxation processes in a strongly localized electron system. In our hopping model we assume that the charge carriers can exchange maximally an amount ω of energy in one hop. The investigation of the system
Publikováno v:
physica status solidi (c). 1:84-87
An area of large current interest is the interplay of charge and spin transport of carriers in extended states. The study of this problem is of intrinsic scientific interest and is further motivated by the prospect of possible applications, e.g. a sp
Publikováno v:
physica status solidi (b). 230:177-181
We argue that hopping transport in the presence of Hubbard interaction is affected by a relaxation mode. The relaxation mode governs the diffusion and the decay of excitations of the system. We discuss the new problems that result from the considerat
Publikováno v:
physica status solidi (b). 230:21-24
We outline results on the calculation of the transport coefficients for a non-equilibrium charge carrier moving in an arbitrary density of states. The equations for the calculation of the transport coefficients are completed by constitutive equations
Publikováno v:
Philosophical Magazine B. 81:925-940
In the paper we show how separation of scales can be used for the calculation of the critical hopping length and its dispersion in the whole range of frequencies. The separation of scales that we use is already present in the pair approximation of Po
Publikováno v:
Materials Science and Engineering: A. :568-571
The influence of single phason flips on the electronic properties of quasicrystalline model systems is investigated instead of using random tiling models. In a tight binding model of the Penrose lattice there are seven different types of possible pha
Publikováno v:
Physical Review B. 62:11450-11459
The magnetic-field dependence of the magnetoconductivity due to quantum interferences of isotropic three-dimensional samples in the strongly localized regime is investigated at high frequencies. To this end the three-site model is used. The investiga
Publikováno v:
physica status solidi (b). 218:63-66
Publikováno v:
Physical Review B. 59:8626-8638
Publikováno v:
Physical Review B. 59:861-870