Magnetooptics of composite fermions

I.V. Kukushkin^а, б, J.H. Smet^б, Klitzing Klaus von^б, K. Eberl^б
^аИнститут физики твердого тела имени Ю.А. Осипьяна РАН, ул. Академика Осипьяна 2, Черноголовка, Московская обл., 142432, Российская Федерация
^бMax-Planck Institut für Festkörperforschung, Stuttgart, Germany

The Fermi energy and the Zeeman splitting of composite fermions are measured from the temperature dependence of the electron spin polarization at $\nu=1/2$. We demonstrate that the Zeeman splitting of composite fermions is enhanced by a factor of $2.5$ due to the interaction between CFs. The latter is very sensitive on the finite width of the $\mathrm{2D}$ channel. The spin polarization at $\nu=1/3$ and $\nu=2/3$ displays an activated behavior and the derived spin-wave gaps are compared with simultaneously measured transport values.

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English fulltext is available at DOI: 10.1070/1063-7869/44/10S/S06

PACS: 73.43.−f, 73.43.Cd, 71.70.−d (все)
DOI: 10.1070/1063-7869/44/10S/S06
URL: https://ufn.ru/ru/articles/2001/13/f/
Цитата: Kukushkin I V, Smet J H, Klitzing Klaus von, Eberl K "Magnetooptics of composite fermions" УФН 171 36–39 (2001)

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%0 Journal Article
%T Magnetooptics of composite fermions
%A I. V. Kukushkin
%A J. H. Smet
%A Klitzing Klaus von
%A K. Eberl
%I Uspekhi Fizicheskikh Nauk
%D 2001
%J Usp. Fiz. Nauk
%V 171
%N 13
%P 36-39
%U https://ufn.ru/ru/articles/2001/13/f/
%U https://doi.org/10.1070/1063-7869/44/10S/S06

English citation: Kukushkin I V, Smet J H, Klitzing Klaus von, Eberl K “Magnetooptics of composite fermions” Phys. Usp. 44 36–39 (2001); DOI: 10.1070/1063-7869/44/10S/S06