Abstract
Electron-heating measurements are used to compare the form of the electron-phonon interaction in two-dimensional, and quasi-one-dimensional, InGaAs quantum wires. Evidence for a strongly enhanced interaction is found in the quasi-one-dimensional wire, and is suggested to result from the presence of the singularities in its electronic density of states. The Bloch-Gruneisen criterion is easily violated in this wire, and its energy-loss function is found to show a weak temperature dependence, which is argued to result from a saturation of scattering processes in the uppermost one-dimensional subband.
Original language | English (US) |
---|---|
Pages (from-to) | 727-729 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 81 |
Issue number | 4 |
DOIs | |
State | Published - Jul 22 2002 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)