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Pis'ma v Zh. Èksper. Teoret. Fiz., 2014, Volume 100, Issue 11, Pages 847–852 (Mi jetpl4490)  

This article is cited in 1 scientific paper (total in 1 paper)

CONDENSED MATTER

Detecting the sign reversal of the $g$-factor of two-dimensional electrons in narrow GaAs/Al$_x$Ga$_{1-x}$As quantum wells

V. V. Solov'evab, W. Dietscheb, I. V. Kukushkinab

a Institute of Solid State Physics, Russian Academy of Sciences
b Max-Planck-Institute fur Festkorperforschung

Abstract: By means of polarization-resolved photoluminescence spectroscopy, the sign reversal of the $z$ component of the $g$-factor of two-dimensional electrons in a GaAs/Al$_{0.33}$Ga$_{0.67}$As quantum well in a strong perpendicular magnetic field in the vicinity of the filling factor $\nu=3$ is observed as the well width is reduced. The energy splitting between the spectral lines with opposite circular polarizations corresponding to the recombination of electrons from the lowest Landau level is analyzed. Owing to the exchange interaction, this splitting has either a maximum or a minimum as a function of the magnetic field in the vicinity of the electron filling factor $\nu=3$, the type of extremum depending on the sign of the $z$ component of the electron $g$-factor. The suggested method makes it possible to reliably recognize the sign reversal of the $g$-factor upon the variation of its magnitude by less than $\Delta g_e \approx 0.06$. It is found that the sign reversal occurs for a quantum-well width of $65\pm 3$ Å.

DOI: https://doi.org/10.7868/S0370274X1423012X

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English version:
Journal of Experimental and Theoretical Physics Letters, 2014, 100:11, 746–750

Bibliographic databases:

Document Type: Article
Received: 31.10.2014

Citation: V. V. Solov'ev, W. Dietsche, I. V. Kukushkin, “Detecting the sign reversal of the $g$-factor of two-dimensional electrons in narrow GaAs/Al$_x$Ga$_{1-x}$As quantum wells”, Pis'ma v Zh. Èksper. Teoret. Fiz., 100:11 (2014), 847–852; JETP Letters, 100:11 (2014), 746–750

Citation in format AMSBIB
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\paper Detecting the sign reversal of the $g$-factor of two-dimensional electrons in narrow GaAs/Al$_x$Ga$_{1-x}$As quantum wells
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
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    This publication is cited in the following articles:
    1. Toloza Sandoval M.A., de Andrada e Silva E.A., Ferreira da Silva A., La Rocca G.C., “Electron g factor anisotropy in asymmetric III–V semiconductor quantum wells”, Semicond. Sci. Technol., 31:11 (2016), 115008  crossref  mathscinet  isi  scopus
  •       Pis'ma v Zhurnal ksperimental'noi i Teoreticheskoi Fiziki
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