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

2003/01/11 by J. Zhu, H. L. Störmer, H. L. Stormer +3 · 7 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevlett.90.056805

5 pages, 2 eps figures, to appear in PRL

arxiv created 2003/01/11 · openalex publication_date 2003/02/07 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30

Abstract

We determine the spin susceptibility in a two-dimensional electron system in GaAs/AlGaAs over a wide range of low densities from 2\ifmmode×\else\texttimes\fi10⁹ cm^\ensuremath-2 to 4\ifmmode×\else\texttimes\fi10¹⁰ cm^\ensuremath-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.

Citations

• On the Interaction of Electrons in Metals
• Sharp increase of the effective mass near the critical density in a metallic two-dimensional electron system
• Metallic behavior and related phenomena in two dimensions
• Indication of the Ferromagnetic Instability in a Dilute Two-Dimensional Electron System

Cited by

• Spin susceptibility and effective mass of two-dimensional electrons inMgxZn1−xO/ZnOheterostructures
• Spin susceptibility of two-dimensional hole gases in GaAs/AlGaAs heterostructures
• Correlation energy of a two-dimensional electron gas from static and dynamic exchange-correlation kernels
• Spin polarization and metallic behavior in a silicon two-dimensional electron system
• Nonanalytic paramagnetic response of itinerant fermions away and near a ferromagnetic quantum phase transition
• Thermodynamics of a Fermi liquid in a magnetic field
• Similarities and differences in two-dimensional metallicity induced by temperature and a parallel magnetic field: Effect of screening