Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2004-03-18
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
8 pages, 5 figures Due to size limitations some figures are not included in high quality. A high quality pdf-version with high
Scientific paper
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 avoided band crossings, metal-insulator transitions, and changes in the spreading direction of wave packets in two new situations: (i) for a purely magnetic modulation and (ii) in the limit of weak electric and magnetic modulations, where the Landau band coupling can be neglected. In the second case the corresponding classical system is no longer chaotic but integrable, whereby these phenomena are not expected. We argue that they are due to tunneling.
Ketzmerick Roland
Naundorf Björn
No associations
LandOfFree
Electrons in 2D periodic magnetic and electric fields: Avoided band crossings, metal-insulator transitions, and changes in the spreading direction does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Electrons in 2D periodic magnetic and electric fields: Avoided band crossings, metal-insulator transitions, and changes in the spreading direction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrons in 2D periodic magnetic and electric fields: Avoided band crossings, metal-insulator transitions, and changes in the spreading direction will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-524878