Lifetime of two-dimensional electrons measured by tunneling spectroscopy
Lifetime of two-dimensional electrons measured by tunneling spectroscopy
For electrons tunneling between parallel two-dimensional electron systems, conservation of in-plane momentum produces sharply resonant current-voltage characteristics and provides a uniquely sensitive probe of the underlying electronic spectral functions. We report here the application of this technique to accurate measurements of the temperature dependence of the electron-electron scattering rate in …