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arXiv · cond-mat/0301165

Spin Susceptibility of an Ultra-Low Density Two Dimensional Electron System

J. Zhu·H. L. Stormer·L. N. Pfeiffer·K. W. Baldwin·K. W. West
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Abstract

We determine the spin susceptibility in a two dimensional electron system in GaAs/AlGaAs over a wide range of low densities from 2$\times10^{9}$cm$^{-2}$ to 4$\times10^{10}$cm$^{-2}$. Our data can be fitted to an equation that describes the density dependence as well as the polarization dependence of the spin susceptibility. It can account for the anomalous g-factors reported recently in GaAs electron and hole systems. The paramagnetic spin susceptibility increases with decreasing density as expected from theoretical calculations.

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J. Zhu, H. L. Stormer, L. N. Pfeiffer, K. W. Baldwin, K. W. West. 2003-01-11. Spin Susceptibility of an Ultra-Low Density Two Dimensional Electron System. https://doi.org/10.1103/physrevlett.90.056805

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