Physics of the Insulating Phase in the Dilute Two-Dimensional Electron Gas

Abstract

We propose to use the radio-frequency single-electron transistor as an extremely sensitive probe to detect the time-periodic ac signal generated by sliding electron lattice in the insulating state of the dilute two-dimensional electron gas. We also propose to use the optically-pumped NMR technique to probe the electron spin structure of the insulating state. We show that the electron effective mass and spin susceptibility are strongly enhanced by critical fluctuations of electron lattice in the vicinity of the metal-insulator transition, as observed in experiment.

arXiv comment5 pages, 2 figures, uses jetpl.cls (included). v.4: After publication in JETP Letters, two plots comparing theory and experiment are added, and a minor error is corrected

References in corpus (18)

• Metallic behavior and related phenomena in two dimensions
• Spin Degree of Freedom in a Two-Dimensional Electron Liquid
• The low-density spin susceptibility and effective mass of mobile electrons in Si inversion layers
• Wigner crystallization and metal-insulator transition of two-dimensional holes in GaAs/AlGaAs at B=0
• Indication of the ferromagnetic instability in a dilute two-dimensional electron system
• Sharp increase of the effective mass near the critical density in a metallic 2D electron system
• Unexpected Behavior of the Local Compressibility Near the B=0 Metal-Insulator Transition
• Wigner Glass, Spin-liquids, and the Metal-Insulator Transition
• Thermodynamic Signature of a Two-Dimensional Metal-Insulator Transition
• Highly anisotropic g-factor of two-dimensional hole systems
• The thermodynamic spin magnetization of strongly correlated 2d electrons in a silicon inversion layer
• Phase separation in the two-dimensional electron liquid in MOSFETs
• Optically Pumped NMR Measurements of the Electron Spin Polarization in GaAs Quantum Wells near Landau Level Filling Factor nu=1/3
• Metal-insulator transition in a 2D electron gas: Equivalence of two approaches for determining the critical point
• The Droplet State and the Compressibility Anomaly in Dilute 2D Electron Systems
• Properties of strongly correlated two-dimensional electron gas in semiconductor layers
• Spin polarization of strongly interacting 2D electrons: the role of disorder
• Compressibility of a two-dimensional hole gas in tilted magnetic field

Cited by in corpus (7)

• Self-generated locality near a ferromagnetic quantum-critical point
• Quantum critical behavior near a density-wave instability in an isotropic Fermi liquid
• Two Types of the Effective Mass Divergence and the Grüneisen Ratio in Heavy Fermion Metals
• Quasiparticles of strongly correlated Fermi liquids at high temperatures and in high magnetic fields
• Dispersion Instability in Strongly Interacting Electron Liquids
• Universal low-temperature behavior of the CePd_{1-x}Rh_x ferromagnet
• Fermion Condensation Quantum Phase Transition versus Conventional Quantum Phase Transitions