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Electron-electron scattering probed by a collimated electron beam

1992; IOP Publishing; Volume: 7; Issue: 3B Linguagem: Inglês

10.1088/0268-1242/7/3b/054

1361-6641

L. W. Molenkamp, Marco J. P. Brugmans, H. van Houten, C. T. Foxon,

Semiconductor materials and devices

The authors compare the effects of current heating, hot-electron injection and lattice temperature on the attenuation of a collimated ballistic electron beam in a two-dimensional electron gas. In the electron gas heating and injection experiments, they use a quantum point contact as a local thermometer. They find that electron-electron scattering is the dominant factor determining the temperature dependence of the collimation signal.