Quantum Lifetime of Two-Dimensional Holes

J. P. Eisenstein; D. Syphers; L. N. Pfeiffer; K. W. West

doi:10.1016/j.ssc.2007.06.010

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arXiv · 0705.4072

Quantum Lifetime of Two-Dimensional Holes

J. P. Eisenstein·D. Syphers·L. N. Pfeiffer·K. W. West

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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.

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J. P. Eisenstein, D. Syphers, L. N. Pfeiffer, K. W. West. 2007-07-27. Quantum Lifetime of Two-Dimensional Holes. https://doi.org/10.1016/j.ssc.2007.06.010

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