Spin-Droplet State of an Interacting 2D Electron System

Abstract

We report thermodynamic magnetization measurements of two-dimensional electrons in several high mobility Si metal-oxide-semiconductor field-effect transistors. We provide evidence for an easily polarizable electron state in a wide density range from insulating to deep into the metallic phase. The temperature and magnetic field dependence of the magnetization is consistent with the formation of large-spin droplets in the insulating phase. These droplets melt in the metallic phase with increasing density and temperature, although they survive up to large densities.

5 pages, 4 figures

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Cited by in corpus (28)

• Strongly correlated two-dimensional plasma explored from entropy measurements
• Electronic phase separation: recent progress in the old problem
• Transport evidence for a sliding two-dimensional quantum electron solid
• Probing Electron Interactions in a Two-Dimensional System by Quantum Magneto-Oscillations
• Novel Energy Scale in the Interacting 2D Electron System Evidenced from Transport and Thermodynamic Measurements
• Spin-Valley Coherent Phases of the $\nu =0$ Quantum Hall State in Bilayer Graphene
• Metal-insulator transition and low-density phases in a strongly-interacting two-dimensional electron system
• Interaction-induced metallicity in a two-dimensional disordered non-Fermi liquid
• Quantum Interference of Hydrodynamic Modes in a Dirty Marginal Fermi Liquid
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• Spin polarization and exchange-correlation effects in transport properties of two-dimensional electron systems in silicon
• Two-dimensional system of strongly interacting electrons in silicon (100) structures
• Evidence for mixed phases and percolation at the metal-insulator transition in two dimensions
• Droplets of the order parameter in a low density attracting electron system in the presence of a strong random potential
• Measurements of the magnetic properties of conduction electrons
• Orbital and spin order in oxide two-dimensional electron gases
• Interacting spin-droplets and magnetic properties of a low-density two-dimensional electron gas
• Temperature derivative of the chemical potential and its magnetooscillations in two-dimensional system
• Spin effect on the low-temperature resistivity maximum in a strongly interacting 2D electron system
• Phase Separation in Two-Dimensional Electron Systems: Experimental View
• Density of states measurements for heavy subband of holes in HgTe quantum wells
• Inelastic electron scattering off a quantum dot in the cotunneling regime: the signature of mesoscopic Stoner instability
• Magnetic-field-driven redistribution between extended and localized electronic states in high-mobility Si MOSFETs at low temperatures
• Two-loop renormalization of the Finkel'stein theory: The specific heat
• Tunneling density of states in quantum dots with anisotropic exchange
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• Stoner-type theory of Magnetism in Silicon MOSFETs
• Spin and valley effects on the quantum phase transition in two dimensions