Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Kehr, K. W."'
Autor:
Kehr, K. W., Koza, Z.
Publikováno v:
Phys. Rev. E 61, 2319-2326 (2000)
The hopping motion of lattice gases through potentials without mirror-reflection symmetry is investigated under various bias conditions. The model of 2 particles on a ring with 4 sites is solved explicitly; the resulting current in a sawtooth potenti
Externí odkaz:
http://arxiv.org/abs/cond-mat/9909154
Publikováno v:
Physica A 253 (1998) 9-22
A length dependence of the effective mobility in the form of a power law, B ~ L^(1-1/alpha) is observed in dispersive transport in amorphous substances, with 0 < \alpha < 1. We deduce this behavior as a simple consequence of the statistical theory of
Externí odkaz:
http://arxiv.org/abs/cond-mat/9901047
Autor:
Ambaye, H., Kehr, K. W.
A hopping model for molecular motors is presented consisting of a state with asymmetric hopping rates with period 2 and a state with uniform hopping rates. State changes lead to a stationary unidirectional current of a particle. The current is explic
Externí odkaz:
http://arxiv.org/abs/cond-mat/9901034
Publikováno v:
Annalen Phys.7:732-736,1998
The tunneling of Gaussian wave packets has been investigated by numerically solving the one-dimensional Schr\"odinger equation. The shape of wave packets interacting with a square barrier has been monitored for various values of the barrier width, he
Externí odkaz:
http://arxiv.org/abs/quant-ph/9809041
The diffusion coefficient of single particles in the presence of Ehrlich-Schwoebel barriers (ESB)is considered. An exact expression is given for the diffusion coefficient on linear chains with random arrangements of ESB. The results are extended to s
Externí odkaz:
http://arxiv.org/abs/cond-mat/9710026
Autor:
Murthy, K. P. N., Kehr, K. W.
The ground state dynamics of an entropy barrier model proposed recently for describing relaxation of glassy systems is considered. At stages of evolution the dynamics can be described by a simple variant of the Ehrenfest urn model. Analytical express
Externí odkaz:
http://arxiv.org/abs/cond-mat/9707343
The temperature dependence of the diffusion coefficient of particles is studied on lattices with disorder. A model is investigated with both trap and barrier disorder that was introduced before by Limoge and Bocquet (1990 Phys. Rev. Lett. (65) 60) to
Externí odkaz:
http://arxiv.org/abs/cond-mat/9610191
Autor:
Kehr, K. W., Wichmann, T.
A survey is given on asymptotic diffusion coefficients of particles in lattices with random transition rates. Exact and approximate results for single particles are reviewed. A recent exact expression in $d = 1$ which includes occupation factors is d
Externí odkaz:
http://arxiv.org/abs/cond-mat/9602121
Publikováno v:
Physical review / E 63, 021104 (2001).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3364::b8a551b9f1b4b690153c583b46719d14
https://hdl.handle.net/2128/1530
https://hdl.handle.net/2128/1530
Autor:
Kehr, K. W., Koza, Z.
Publikováno v:
Physical review / E 61, 2319-2326 (2000).
The hopping motion of lattice gases through potentials without mirror-reflection symmetry is investigated under various bias conditions. The model of two particles on a ring with four sites is solved explicitly; the resulting current in a sawtooth po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3364::2a386e88604a288e0fbff043790f5ee2
https://hdl.handle.net/2128/811
https://hdl.handle.net/2128/811