Metal-to-Insulator Transitions in Strongly Correlated Regime

Metal-to-Insulator Transitions in Strongly Correlated Regime

Transport results from measuring ultra-clean two-dimensional systems, containing tunable carrier densities from 7 × 10 8 cm − 2 to ∼ 1 × 10 10 cm − 2 , reveal a strongly correlated liquid up to r s &asym...

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Bibliographic Details
Main Authors: Jian Huang, Loren Pfeiffer, Ken West
Format: Article
Language:English
Published: MDPI AG 2018-12-01
Series:Applied Sciences
Subjects:
electron-electron interaction
metal-insulator transition
strongly correlated phenomena
Wigner crystal
liquid-solid phase transition
non-Fermi liquid
Online Access:http://www.mdpi.com/2076-3417/9/1/80
Description
Summary:Transport results from measuring ultra-clean two-dimensional systems, containing tunable carrier densities from 7 × 10 8 cm − 2 to ∼ 1 × 10 10 cm − 2 , reveal a strongly correlated liquid up to r s ≈ 40 where a Wigner crystallization is anticipated. A critical behavior is identified in the proximity of the metal-to-insulator transition. The nonlinear DC responses for r s > 40 captures hard pinning modes that likely undergo a first order transition into an intermediate phase in the course of melting.
ISSN:2076-3417

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