Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
1998-08-31
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
ZIP archive,10 pages, 3 ps figures, submitted to PRB
Scientific paper
10.1103/PhysRevB.59.7551
We investigated theoretically the Coulomb drag effect in coupled 2D electron gases in a wide interval of magnetic field and temperature $ 1/\tau \ll \omega_c \ll E_F/\hbar$, $T \ll E_F$, $\tau$ being intralayer scattering time, $\omega_c$ being the cyclotron frequency. We show that the quantization of the electron spectrum leads to rich parametric dependences of drag transresistance on temperature and magnetic field. This is in contrast to usual resistance. New small energy scales are found to cut typical excitation energies to values lower than temperature. This may lead to a linear temperature dependence of transresistance even in a relatively weak magnetic field and can explain some recent experimental data. We present a novel mechanism of Coulomb drag when the current in the active layer causes a magnetoplasmon wind and the magnetoplasmons are absorbed by the electrons of the passive layer providing a momentum transfer. We derived general relations that describe the drag as a result of resonant tunneling of magnetoplasmons.
Khaetskii Alexander V.
Nazarov Yuli V.
No associations
LandOfFree
Coulomb drag in intermediate magnetic fields 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 Coulomb drag in intermediate magnetic fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coulomb drag in intermediate magnetic fields will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-503103