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Density dependent spin susceptibility and effective mass in interacting quasi-two dimensional electron systems

Ying Zhang·S. Das Sarma
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Abstract

Motivated by recent experimental reports, we carry out a Fermi liquid many-body calculation of the interaction induced renormalization of the spin susceptibility and effective mass in realistic two dimensional (2D) electron systems as a function of carrier density using the leading-order `ladder-bubble' expansion in the dynamically screened Coulomb interaction. Using realistic material parameters for various semiconductor-based 2D systems, we find reasonable quantitative agreement with recent experimental susceptibility and effective mass measurements. We point out a number of open questions regarding quantitative aspects of the comparison between theory and experiment in low-density 2D electron systems.

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Ying Zhang, S. Das Sarma. 2005-08-29. Density dependent spin susceptibility and effective mass in interacting quasi-two dimensional electron systems. https://doi.org/10.1103/physrevb.72.075308

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