Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2001-08-14
Phys. Rev. B, 65 (2002) 125326
Physics
Condensed Matter
Disordered Systems and Neural Networks
9 pages, 4 figures
Scientific paper
10.1103/PhysRevB.65.125326
We study the dynamical properties of an electron gas scattered by impenetrable antidots in the presence of a strong magnetic field. We find that the lineshape of the cyclotron resonance is very different from the Lorentzian and is not characterized by the Drude scattering rate. We show that the dissipative dynamical response of skipping orbits, $S_c(\omega)$, is broadened on a scale of the cyclotron frequency $\omega_c$ and has a sharp dip $\propto |\omega-\omega_c|$. For small antidots, $S_c(\omega)$ is strongly modulated with a period equal to $\omega_c$ and has sharp square-root singularities for a series of resonant frequencies. For large antidots, $S_c(\omega)$ has a hard gap at $\omega<\omega_c$ between two sharp peaks, associated respectively with edge states and free cyclotron orbits.
Evers Ferdinand
Gornyi Igor V.
Polyakov D. G.
No associations
LandOfFree
Cyclotron resonance in antidot arrays 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 Cyclotron resonance in antidot arrays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cyclotron resonance in antidot arrays will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-75867