Conduction-band electron effective mass in Zn 0.87 Mn 0.13 Se measured by terahertz and far-infrared magnetooptic ellipsometry

T. Hofmann, U. Schade, K. C. Agarwal, B. Daniel, C. Klingshirn, M. Hetterich, C. M. Herzinger, Mathias Schubert

Research output: Contribution to journalArticle

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Abstract

We determine the electron effective mass parameter m* =0.086±0.004 m0 of thin-film n -type low-chlorine-doped Zn0.87 Mn0.13 Se with free-charge-carrier concentration N=4.5× 1017 cm-3 and optical mobility μ=300±20 cm2 (V s) using magneto-optic generalized ellipsometry in the terahertz and far-infrared spectral domain for wave numbers from ω=30-650 cm-1. The room-temperature measurements were carried out with magnetic fields up to 3 T. We employ synchrotron and black-body radiation sources for the terahertz and far-infrared spectral regions, respectively. Comparison with previous experimental results from samples with considerably higher free electron density and theoretical calculations suggest that our value is sufficiently unaffected by band nonparabolicity and provides a good approximation of the Γ -point conduction band mass in Zn0.87 Mn0.13 Se. We further provide optical phonon mode parameters and the high-frequency dielectric constant.

Original languageEnglish (US)
Article number042105
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume88
Issue number4
DOIs
StatePublished - Feb 6 2006

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ellipsometry
conduction bands
black body radiation
magneto-optics
radiation sources
free electrons
chlorine
temperature measurement
charge carriers
synchrotrons
electrons
permittivity
room temperature
thin films
approximation
magnetic fields

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Conduction-band electron effective mass in Zn 0.87 Mn 0.13 Se measured by terahertz and far-infrared magnetooptic ellipsometry. / Hofmann, T.; Schade, U.; Agarwal, K. C.; Daniel, B.; Klingshirn, C.; Hetterich, M.; Herzinger, C. M.; Schubert, Mathias.

In: Applied Physics Letters, Vol. 88, No. 4, 042105, 06.02.2006, p. 1-3.

Research output: Contribution to journalArticle

Hofmann, T, Schade, U, Agarwal, KC, Daniel, B, Klingshirn, C, Hetterich, M, Herzinger, CM & Schubert, M 2006, 'Conduction-band electron effective mass in Zn 0.87 Mn 0.13 Se measured by terahertz and far-infrared magnetooptic ellipsometry', Applied Physics Letters, vol. 88, no. 4, 042105, pp. 1-3. https://doi.org/10.1063/1.2168258
Hofmann, T. ; Schade, U. ; Agarwal, K. C. ; Daniel, B. ; Klingshirn, C. ; Hetterich, M. ; Herzinger, C. M. ; Schubert, Mathias. / Conduction-band electron effective mass in Zn 0.87 Mn 0.13 Se measured by terahertz and far-infrared magnetooptic ellipsometry. In: Applied Physics Letters. 2006 ; Vol. 88, No. 4. pp. 1-3.
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AU - Daniel, B.

AU - Klingshirn, C.

AU - Hetterich, M.

AU - Herzinger, C. M.

AU - Schubert, Mathias

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N2 - We determine the electron effective mass parameter m* =0.086±0.004 m0 of thin-film n -type low-chlorine-doped Zn0.87 Mn0.13 Se with free-charge-carrier concentration N=4.5× 1017 cm-3 and optical mobility μ=300±20 cm2 (V s) using magneto-optic generalized ellipsometry in the terahertz and far-infrared spectral domain for wave numbers from ω=30-650 cm-1. The room-temperature measurements were carried out with magnetic fields up to 3 T. We employ synchrotron and black-body radiation sources for the terahertz and far-infrared spectral regions, respectively. Comparison with previous experimental results from samples with considerably higher free electron density and theoretical calculations suggest that our value is sufficiently unaffected by band nonparabolicity and provides a good approximation of the Γ -point conduction band mass in Zn0.87 Mn0.13 Se. We further provide optical phonon mode parameters and the high-frequency dielectric constant.

AB - We determine the electron effective mass parameter m* =0.086±0.004 m0 of thin-film n -type low-chlorine-doped Zn0.87 Mn0.13 Se with free-charge-carrier concentration N=4.5× 1017 cm-3 and optical mobility μ=300±20 cm2 (V s) using magneto-optic generalized ellipsometry in the terahertz and far-infrared spectral domain for wave numbers from ω=30-650 cm-1. The room-temperature measurements were carried out with magnetic fields up to 3 T. We employ synchrotron and black-body radiation sources for the terahertz and far-infrared spectral regions, respectively. Comparison with previous experimental results from samples with considerably higher free electron density and theoretical calculations suggest that our value is sufficiently unaffected by band nonparabolicity and provides a good approximation of the Γ -point conduction band mass in Zn0.87 Mn0.13 Se. We further provide optical phonon mode parameters and the high-frequency dielectric constant.

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