Novel Phenomena in Dilute Electron Systems in Two Dimensions

Abstract

We review recent experiments that provide evidence for a transition to a conducting phase in two dimensions at very low electron densities. The nature of this phase is not understood, and is currently the focus of intense theoretical and experimental attention.

To appear as a Perspective in the Proceedings of the National Academy of Sciences. Reference to Chakravarty, Kivelson, Nayak, and Voelker's paper added (Phil. Mag., in press)

References in corpus (26)

• Continuous Quantum Phase Transitions
• Metallic behavior and related phenomena in two dimensions
• Possible Metal/Insulator Transition at B=0 in Two Dimensions
• Electric field scaling at a B=0 metal-insulator transition in two dimensions
• Magnetic Field Suppression of the Conducting Phase in Two Dimensions
• Metal-insulator transition at B=0 in a dilute two dimensional GaAs-AlGaAs hole gas
• The Metallic-Like Conductivity of a Two-Dimensional Hole System
• Scaling theory of two-dimensional metal-insulator transitions
• Metal Insulator transition at B=0 in p-SiGe
• Metallic Phase and Metal-insulator Transition in 2d Electronic Systems
• On the Theory of Metal-Insulator Transitions in Gated Semiconductors
• Instability of the Two-Dimensional Metallic Phase to Parallel Magnetic Field
• Interaction-Induced Enhancement of Spin-Orbit Coupling in Two-Dimensional Electronic System
• Superconductivity in a two-dimensional Electron Gas
• Weak localisation, hole-hole interactions and the "metal"-insulator transition in two dimensions
• Apparent Metallic Behavior at B = 0 of a two-dimensional electron system in AlAs
• A New Liquid Phase and Metal-Insulator Transition in Si MOSFETs
• Metal-Insulator Transition of Disordered Interacting Electrons
• Re-entrant insulator-metal-insulator transition at B=0 in a two dimensional hole gas
• Observation of the Metal-Insulator Transition in Two-Dimensional n-type GaAs
• Possible triplet superconductivity in MOSFETs
• Interactions and Scaling in a Disordered Two-Dimensional Metal
• Properties of strongly correlated two-dimensional electron gas in semiconductor layers
• Metal-insulator transition at B=0 in an ultra-low density ($r_s=23$) two dimensional GaAs/AlGaAs hole gas
• Superconductivity in correlated disordered two-dimensional electron gas
• From the magnetic-field-driven transitions to the zero-field transition in two-dimensions

Cited by in corpus (25)

• Metallic behavior and related phenomena in two dimensions
• Metal-insulator transition in two-dimensional electron systems
• Singular Fermi Liquids
• Hydrodynamic description of transport in strongly correlated electron systems
• Transport in strongly correlated two dimensional electron fluids
• Metal-insulator transitions and the effects of electron-electron interactions in two-dimensional electron systems
• Small Angle Shubnikov-de Haas Measurements in Silicon MOSFET's: the Effect of Strong In-Plane Magnetic Field
• Phase separation in the two-dimensional electron liquid in MOSFETs
• Metal-insulator transition in 2D: resistance in the critical region
• Metal-insulator transition in a 2D electron gas: Equivalence of two approaches for determining the critical point
• Metallic low-temperature resistivity in 2D over an extended temperature range
• Properties of strongly correlated two-dimensional electron gas in semiconductor layers
• Temperature-Dependence of the Resistivity of a Dilute 2D Electron System in High Parallel Magnetic Field
• Coherent back-scattering near the two-dimensional metal-insulator transition
• Turning insulators into superconductors
• Metal-insulator transition and low-density phases in a strongly-interacting two-dimensional electron system
• Hall Coefficient of a Dilute 2D Electron System in Parallel Magnetic Field
• Two-dimensional system of strongly interacting electrons in silicon (100) structures
• Hall Coefficient and electron-electron interaction of 2D electrons in Si-MOSFET's
• The metal-insulator transition in 2D systems at T = 0: one-particle approach
• Two-Component Scaling near the Metal-Insulator Bifurcation in Two-Dimensions
• "Unusual" metals in two dimensions: one-particle model of the metal-insulator transition at T=0
• Metal-insulator transition in 2D: the role of interactions and disorder
• Metal-insulator transition in a two-dimensional electron system: the orbital effect of in-plane magnetic field
• Novel coexisting density wave ground state in strongly correlated, two-dimensional electronic materials