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Magnetotransport in low-densityp−Si∕SiGeheterostructures: From metal through hopping insulator to Wigner glass

“…Most of experiments were done using high-quality heterostructures such as n-GaAs/AlGaAs, 10 inversion highmobility Si films, 11 InGaAs/InP heterostructures. 12 The most popular experimental method here is studies of DC I − V curves. 8,11,12 The conventional point of view resulting from the above works is that in realistic 2D systems the Wigner crystal is strongly distorted by disorder and consists of correlated regions sometimes called "the domains".…”

“…12 The most popular experimental method here is studies of DC I − V curves. 8,11,12 The conventional point of view resulting from the above works is that in realistic 2D systems the Wigner crystal is strongly distorted by disorder and consists of correlated regions sometimes called "the domains". The whole structure is pinned by disorder forming a glasslike system see, e. g., Ref.…”

Low‐temperature conductance mechanisms in p‐Si/SiGe heterostructures in high magnetic fields

“…As a result, in the presence of sufficiently strong magnetic field 2DES can form the Wigner crystal even at relatively high electron concentration for which at B=0 the system is liquid [4]. Since then the Wigner crystallization in magnetic field was studied by many research groups, both experimentally and theoretically -mostly using high-quality heterostructures such as n-GaAs/AlGaAs [5], inversion high-mobility Si films [6], InGaAs/InP heterostructures [7]. The most popular experimental method here is studies of DC I-V curves [3,6,7].…”