Quantum Lifetime of Two-Dimensional Holes
arXiv:0705.4072 · doi:10.1016/j.ssc.2007.06.010
Abstract
The quantum lifetime of two-dimensional holes in a GaAs/AlGaAs double quantum well is determined via tunneling spectroscopy. At low temperatures the lifetime is limited by impurity scattering but at higher temperatures hole-hole Coulomb scattering dominates. Our results are consistent with Fermi liquid theory, at least up to r_s = 11. At the highest temperatures the measured width of the hole spectral function becomes comparable to the Fermi energy. A new, tunneling-spectroscopic, method for determining the in-plane effective mass of the holes is also demonstrated.
5 pages, 4 figures. Published version
References in corpus (4)
- Lifetime of Two-Dimensional Electrons Measured by Tunneling Spectroscopy
- Coulomb scattering lifetime of a two-dimensional electron gas
- Electron-electron interactions and two-dimensional - two-dimensional tunneling
- Density and well width dependences of the effective mass of twodimensional holes in (100) GaAs quantum wells measured by cyclotron resonance at microwave frequencies
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- Quantum Lifetime Spectroscopy and Magnetotunneling in Double Bilayer Graphene Heterostructures
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