Phonon Emission from a 2D Electron Gas: Evidence of Transition to the Hydrodynamic Regime

Details Phonon Emission from a 2D Electron Gas: Evidence of Transition to the Hydrodynamic Regime Phonon Emission from a 2D Electron Gas: Evidence of Transition to the Hydrodynamic Regime

1996-05-08

arxiv.org/abs/cond-mat/9605055v1

Physics

Condensed Matter

4 pages, 2 Postscript figures uuencoded with TeX file uses psfig macro. Submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.77.1143

Using as a thermometer the temperature dependent magneto-transport of a two-dimensional electron gas, we find that effective temperature scales with current as $T_{\rm e} \sim I^a$, where $a=0.4 \pm 2\%$ in the {\it Shubnikov de-Haas} regime, and $0.53 \pm 2\%$ in both the {\it integer and fractional} quantum Hall effect. This implies the phonon energy emission rate changes from the expected $P\sim T^5$ to $P\sim T^4$. We explain this, as well as the dramatic enhancement in phonon emission efficiency using a hydrodynamic model.

Affiliated with

Also associated with

No associations

Rating

Phonon Emission from a 2D Electron Gas: Evidence of Transition to the Hydrodynamic Regime 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 from a 2D Electron Gas: Evidence of Transition to the Hydrodynamic Regime, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phonon Emission from a 2D Electron Gas: Evidence of Transition to the Hydrodynamic Regime will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-265983