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Thurn, Christoph ; Axt, Vollrath Martin ; Winter, Andreas ; Pascher, H. ; Krenn, H. ; Liu, X. ; Furdyna, J. K. ; Wojtowicz, T.:
Origin of resonance structures in magneto-optical spectra of InSb and In₁-ₓMnₓSb.
In: Physical Review B.
Bd. 80
(2009)
Heft 19
.
- 195210.
ISSN 0163-1829
DOI: https://doi.org/10.1103/PhysRevB.80.195210
Abstract
InSb and InMnSb samples have been investigated by means of magneto-optical Kerr effect and magnetic circular dichroism. In binary semiconductor compounds such as InSb the observed magneto-optical spectra exhibit narrow and distinct resonances which can be associated with dipole-allowed transitions between the Landau levels in conduction and valence bands. With increasing magnetic field the Landau splitting increases and the observed peaks change their position and amplitude accordingly. In contrast to this observation, the magneto-optical spectra of the diluted magnetic semiconductor InMnSb show only one strong and broad resonance. Contrary to what one expects, particularly in narrow gap materials with large g factors and small effective masses, the shape and position of this resonance do not change with the applied magnetic field. It is found, however, that the amplitude depends linearly on the magnetization of the samples. In this paper we describe how these observations can be understood by means of a k⋅p theory incorporating the exchange interaction of free carriers with localized electrons in the Mn ions.
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| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | quantum wells; ultrafast dynamics; spintronics; intervalenceband transitions; Mn doped semiconductors; spectra; optical response; InSb; InMnSb; magneto-optical Kerr effect; magnetic circular dichroism; diluted magnetic semiconductors; DMS; k⋅p theory; exchange interaction |
| Institutionen der Universität: | Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Lehrstuhl Theoretische Physik III > Lehrstuhl Theoretische Physik III - Univ.-Prof. Dr. Martin Axt Fakultäten Fakultäten > Fakultät für Mathematik, Physik und Informatik Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Lehrstuhl Theoretische Physik III |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Eingestellt am: | 30 Okt 2017 12:36 |
| Letzte Änderung: | 02 Aug 2023 13:23 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/40208 |