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Coulomb-interaction Induced Coupling Of Landau Levels In Intrinsic And Modulation-doped Quantum Wells

Title: Coulomb-interaction Induced Coupling Of Landau Levels In Intrinsic And Modulation-doped Quantum Wells.
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Name(s): Paul, J., author
Stevens, C. E., author
Zhang, H., author
Dey, P., author
McGinty, D., author
McGill, S. A., author
Smith, R. P., author
Reno, J. L., author
Turkowski, V., author
Perakis, I. E., author
Hilton, D. J., author
Karaiskaj, D., author
Type of Resource: text
Genre: Journal Article
Text
Journal Article
Date Issued: 2017-06-28
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: We have performed two- dimensional Fourier transform spectroscopy on intrinsic and modulation doped quantum wells in external magnetic fields up to 10 T. In the undoped sample, the strong Coulomb interactions and the increasing separations of the electron and hole charge distributions with increasing magnetic fields lead to a nontrivial in-plane dispersion of the magneto-excitons. Thus, the discrete and degenerate Landau levels are coupled to a continuum. The signature of this continuum is the emergence of elongated spectral line shapes at the Landau level energies, which are exposed by the multidimensional nature of our technique. Surprisingly, the elongation of the peaks is completely absent in the lowest Landau level spectra obtained from the modulation doped quantum well at high fields.
Identifier: FSU_libsubv1_wos_000404469700004 (IID), 10.1103/PhysRevB.95.245314 (DOI)
Keywords: 2-dimensional electron-gas, magnetic-fields, cyclotron-resonance, light-scattering, 2 dimensions, collective excitations, exchange enhancement, fourier-transform spectroscopy, hall regime, many-body
Publication Note: The publisher's version of record is available at https://doi.org/10.1103/PhysRevB.95.245314
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000404469700004
Owner Institution: FSU
Is Part Of: Physical Review B.
2469-9950
Issue: iss. 24, vol. 95

Choose the citation style.
Paul, J., Stevens, C. E., Zhang, H., Dey, P., McGinty, D., McGill, S. A., … Karaiskaj, D. (2017). Coulomb-interaction Induced Coupling Of Landau Levels In Intrinsic And Modulation-doped Quantum Wells. Physical Review B. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000404469700004