Magneto-optics of two-dimensional electron systems in the ultraquantum limit: incompressible quantum liquids and the Wigner crystal

I.V. Kukushkin, V.B. Timofeev
Osipyan Institute of Solid State Physics, Russian Academy of Sciences, Akademika Osip'yana str. 2, Chernogolovka, Moscow Region, 142432, Russian Federation

Radiative recombination of 2D electrons with photoexcited holes in a single GaAlAs–GaAs heterojunction is used to illustrate the possibilities of the magneto-optic approach to the investigation of the ground state of strongly-correlated electrons in the ultraquantum limit. The method is used to determine the Coulomb gaps of quantum liquids and their hierarchy in the fractional quantum Hall effect. Wigner crystallization of 2D electrons is investigated and an analysis of time-resolved recombination spectra is used to reconstruct the phase boundary of the Wigner crystal.

PACS: 78.20.Ls, 73.43.−f, 78.60.−b (all)
DOI: 10.1070/PU1993v036n07ABEH002288
URL: https://ufn.ru/en/articles/1993/7/a/
Citation: Kukushkin I V, Timofeev V B "Magneto-optics of two-dimensional electron systems in the ultraquantum limit: incompressible quantum liquids and the Wigner crystal" Phys. Usp. 36 (7) 549–571 (1993)

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Оригинал: Кукушкин И В, Тимофеев В Б «Магнитооптика двумерных электронов в ультраквантовом пределе: несжимаемые квантовые жидкости и вигнеровский кристалл» УФН 163 (7) 1–28 (1993); DOI: 10.3367/UFNr.0163.199307a.0001

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