Phonon emission and absorption in the fractional quantum Hall effect

Details Phonon emission and absorption in the fractional quantum Hall effect Phonon emission and absorption in the fractional quantum Hall effect

2000-09-22

arxiv.org/abs/cond-mat/0009346v1

Physica B 298, 164 (2001)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures; 14th International Conference on High Magnetic Fields in Semiconductor Physics, September 24-29, 2000, Mat

Scientific paper

10.1016/S0921-4526(01)00293-9

We investigate the time dependent thermal relaxation of a two-dimensional electron system in the fractional quantum Hall regime where ballistic phonons are used to heat up the system to a non-equilibrium temperature. The thermal relaxation of a 2DES at $\nu=1/2$ can be described in terms of a broad band emission of phonons, with a temperature dependence proportional to $T^4$. In contrast, the relaxation at fractional filling $\nu=2/3$ is characterized by phonon emission around a single energy, the magneto-roton gap. This leads to a strongly reduced energy relaxation rate compared to $\nu=1/2$ with only a weak temperature dependence for temperatures 150 mK $< T <$ 400 mK.

Affiliated with

Also associated with

No associations

Rating

Phonon emission and absorption in the fractional quantum Hall effect 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 Phonon emission and absorption in the fractional quantum Hall effect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phonon emission and absorption in the fractional quantum Hall effect will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-532016