3 papers
nlin.CD2004★ 47 cited
Flooding of regular islands by chaotic states
A. Bäcker, R. Ketzmerick, A. G. Monastra
We introduce a criterion for the existence of regular states in systems with a mixed phase space. If this condition is not fulfilled chaotic eigenstates substantially extend into a…
nlin.CD2004★ 105 cited
Directed Chaotic Transport in Hamiltonian Ratchets
Holger Schanz, Thomas Dittrich, Roland Ketzmerick
We present a comprehensive account of directed transport in one-dimensional Hamiltonian systems with spatial and temporal periodicity. They can be considered as Hamiltonian ratchet…
cond-mat.mes-hall2004
Electrons in 2D periodic magnetic and electric fields: Avoided band crossings, metal-insulator transitions, and changes in the spreading direction
Björn Naundorf, Roland Ketzmerick
We study the energy spectrum and wave packet dynamics of electrons in a two-dimensional periodic potential subject to a perpendicular spatially modulated magnetic field. We observe…