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DOE OSTI · 23183166

Metal–insulator transition and low-density phases in a strongly-interacting two-dimensional electron system

Shashkin, A. A.
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Abstract

Highlights: • Quantum phase transition observed in ultrahigh mobility SiGe/Si/SiGe quantum wells. • Metallic state observed in a strongly interacting spinless two-valley electron system. • Indication of band flattening at the Fermi level reported. • Transport evidence for a sliding two-dimensional quantum electron solid reported. We review recent experimental results on the metal–insulator transition and low-density phases in strongly-interacting, low-disordered silicon-based two-dimensional electron systems. Special attention is given to the metallic state in ultra-clean SiGe quantum wells and to the evidence for a flat band at the Fermi level and a quantum electron solid.

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36 MATERIALS SCIENCE74 ATOMIC AND MOLECULAR PHYSICSCRYSTALLIZATIONDENSITYELECTRON CORRELATIONELECTRONSFERMI LEVELGERMANIUM SILICIDESMETALSMOBILITYQUANTUM WELLSSILICONSOLIDSSPIN ORIENTATIONTWO-DIMENSIONAL SYSTEMS

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Shashkin, A. A.. 2021-12-15. Metal–insulator transition and low-density phases in a strongly-interacting two-dimensional electron system. https://doi.org/10.1016/j.aop.2021.168542

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36 MATERIALS SCIENCE↗