Regensburg 2010 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 7: Graphene 1 (Joint Session with TT)
HL 7.2: Talk
Monday, March 22, 2010, 10:30–10:45, H18
Revivals of quantum wave packets in graphene — •Viktor Krückl1 and Tobias Kramer1,2 — 1Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg — 2Department of Physics, Harvard University, Cambridge, MA 02138, USA
We investigate the propagation of wave-packets on graphene in a perpendicular magnetic field.
The wave-packet evolution in graphene differs drastically from the one in an electron gas and shows
a rich revival structure similar to the dynamics of highly excited Rydberg states [1].
We present a detailed analysis of the occurring collapses, revivals and fractional
revivals analytically as well as numerically.
In order to study the impact of disorder on the effect
we apply our novel numerical scheme to solve the wave-packet propagation
on the effective single-particle Dirac-Hamiltonian
of graphene in the presence of random impurity potentials.
Viktor Krueckl and Tobias Kramer, New J. Phys. 11 093010 (2009)