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Quantum Hall effect
Magnetooptics of composite fermions
I. V. Kukushkinab, J. H. Smetb, K. von Klitzingb, K. Eberlb a Institute of Solid State Physics, Russian Academy of Sciences, 142432 Chernogolovka, Moscow Region, Russian Federation
b Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, 70569 Stuttgart, Germany
Abstract:
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.
Citation:
I. V. Kukushkin, J. H. Smet, K. von Klitzing, K. Eberl, “Magnetooptics of composite fermions”, UFN, 171, supplement № 10 (2001), 36–39; Phys. Usp., 44:10 suppl. (2001), s36–s39
Linking options:
https://www.mathnet.ru/eng/ufn5625 https://www.mathnet.ru/eng/ufn/v171/i13/p36
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Statistics & downloads: |
Abstract page: | 95 | Full-text PDF : | 32 |
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