Local density of states in disordered two-dimensional electron gases at high magnetic field

Details Local density of states in disordered two-dimensional electron gases at high magnetic field Local density of states in disordered two-dimensional electron gases at high magnetic field

2009-04-21

arxiv.org/abs/0904.3262v2

Physical Review B 80, 161311(R) (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures ; typos corrected + one reference updated

Scientific paper

10.1103/PhysRevB.80.161311

Motivated by high-accuracy scanning tunneling spectroscopy measurements on disordered two-dimensional electron gases in strong magnetic field, we present an exact solution for the local density of states (LDoS) of electrons moving in an arbitrary potential smooth on the scale of the magnetic length, that can be locally described up to its second derivatives. We use a technique based on coherent state Green's functions, allowing us to treat on an equal footing confining and open quantum systems. The energy-dependence of the LDoS is found to be universal in terms of local geometric properties, such as drift velocity and potential curvature. We also show that thermal effects are quite important close to saddle points, leading to an overbroadening of the tunneling trajectories.

Affiliated with

Also associated with

No associations

Rating

Local density of states in disordered two-dimensional electron gases at high magnetic field 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 Local density of states in disordered two-dimensional electron gases at high magnetic field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Local density of states in disordered two-dimensional electron gases at high magnetic field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-371688