Coherent and Incoherent Magnetooptical Reflection and Transmission Effects of Multilayer Structures

Nies, R.; Keßler, F. R.

doi:10.1002/pssa.2211110232

Cited by 20 publications

(10 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to study the influence of these effects in the magneto-optical spectra of the quantum-well multilayers, we employed a matrix formalism described elsewhere. 22 This matrix calculus includes coherent optical and magnetooptical interference effects in thin multilayers. In the following, we will briefly describe the magneto-optical matrix theory.…”

Section: A Simulation Of Magneto-optical Spectramentioning

confidence: 99%

Observation of Landau levels and excitons at room temperature inIn0.53Ga0.47As
Jaschinski
¹
,
Vergöhl
²
,
Schoenes
³

et al. 1998
Phys. Rev. B
11
3
11
0
View full text Add to dashboard Cite

We report on magneto-optical Kerr-ellipticity measurements with different In 0.53 Ga 0.47 As/InP multiquantum-wells at room temperature. These samples are grown with nominally the same sample parameters, except for the barrier thickness, which for one sample is small enough for a coupling between the quantum wells. The spectral range covered the quantum-well interband transitions of the electron-heavy-hole ground states. The magneto-optical spectra show a number of oscillations, whose spectral position depends on the magnetic-field strength. For model calculations, Lorentzian line shapes for the off-diagonal element of the dielectric tensor have been used. Magneto-optical interference effects are carefully discussed. For small magnetic fields, the shift of the ground state shows a diamagnetic behavior. For the coupled quantum well a transition into the high-field regime can be seen at BϷ9 T. Due to the higher exciton energy for the uncoupled system, high-field behavior occurs only at fields beyond the range of the present experiments. Model calculations allow us to estimate from the shift of the ground state (1s), the exciton binding energy and the dimensionality of the system. According to these calculations the uncoupled sample shows a more 2D-like ͑where 2D is two-dimensional͒ behavior, while the coupled system is more 3D like. The higher levels, however, are typical for Landau splitting. For these the excitonic effect is negligible compared to the Landau shift. In our experiments, we were able to trace the oscillations up to 200 meV above the band gap of unstrained In 0.53 Ga 0.47 As bulk material. This allows us to determine the energy dependence of the reduced effective mass at room temperature. Using the three-band Kane model for the calculation of the electron effective mass, we find that the hole effective mass in In 0.53 Ga 0.47 As quantum wells is significantly lower than in bulk material.

show abstract

Section: A Simulation Of Magneto-optical Spectramentioning

confidence: 99%

Observation of Landau levels and excitons at room temperature inIn0.53Ga0.47As
Jaschinski
¹
,
Vergöhl
²
,
Schoenes
³

et al. 1998
Phys. Rev. B
11
3
11
0
View full text Add to dashboard Cite

show abstract

“…In our numerical simulation we account for this effect by means of a transfer-matrix method. 13 In this way an excellent agreement between measurement and calculation is obtained using the model discussed in Sec. III.…”

Section: Resultsmentioning

confidence: 94%

Origin of resonance structures in magneto-optical spectra of InSb andIn1−xMnxSb

et al. 2009

View full text Add to dashboard Cite

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 ជ · p ជ theory incorporating the exchange interaction of free carriers with localized electrons in the Mn ions.

show abstract

“…A 2ϫ2 characteristic matrix formulation [11][12][13] which would be required to analyze multilayer structures, is briefly discussed in Sec. III.…”

Section: Introductionmentioning

confidence: 99%

Cyclotron frequency coupled enhancement of Kerr rotation in low refractive index-dielectric/magneto-optic bilayer thin-film structures

Puri

2002

Journal of Applied Physics

View full text Add to dashboard Cite

We investigate the enhancement of magneto-optic polar Kerr rotation over a broad range of optical frequencies. The Drude model for the dielectric tensor is considered. Resonance-like peaks in the Kerr rotation and ellipticity caused in the vicinity of a plasma edge is extended throughout the visible spectrum by deriving an expression for the cyclotron frequency such that Re(⑀ xx )ϳ1 at any given incident photon energy and plasma frequency of the material. The Kerr rotation obtained by use of this expression was studied for the case of InSb and further enhancement of Kerr rotation was achieved in the case of LiF/InSb bilayer thin-film structure, grown on a glass substrate. The numerical analysis was carried out using a 2ϫ2 characteristic matrix, which takes into account multiple reflections and interface effects within the medium. In addition the role of various magneto-optic material parameters and layer thicknesses is investigated in determining the optical frequency at which the maximum Kerr rotation occurs, under the present cyclotron frequency condition. Enhanced Kerr rotation greater than 1.5°over a broad range of optical frequencies was obtained. Tables showing optimum figure of merit for repeated LiF/InSb bilayers at 3.1 eV for different plasma frequencies are also provided.

show abstract

Coherent and Incoherent Magnetooptical Reflection and Transmission Effects of Multilayer Structures

Cited by 20 publications

References 14 publications

Observation of Landau levels and excitons at room temperature inIn0.53Ga0.47As
Jaschinski
¹
,
Vergöhl
²
,
Schoenes
³

et al. 1998
Phys. Rev. B
11
3
11
0
View full text Add to dashboard Cite

Observation of Landau levels and excitons at room temperature inIn0.53Ga0.47As
Jaschinski
¹
,
Vergöhl
²
,
Schoenes
³

et al. 1998
Phys. Rev. B
11
3
11
0
View full text Add to dashboard Cite

Origin of resonance structures in magneto-optical spectra of InSb andIn1−xMnxSb

Cyclotron frequency coupled enhancement of Kerr rotation in low refractive index-dielectric/magneto-optic bilayer thin-film structures

Contact Info

Product

Resources

About

Coherent and Incoherent Magnetooptical Reflection and Transmission Effects of Multilayer Structures

Cited by 20 publications

References 14 publications

Observation of Landau levels and excitons at room temperature inIn0.53Ga0.47AsJaschinski1, Vergöhl2, Schoenes3 et al. 1998Phys. Rev. B113110View full textAdd to dashboardCite

Observation of Landau levels and excitons at room temperature inIn0.53Ga0.47AsJaschinski1, Vergöhl2, Schoenes3 et al. 1998Phys. Rev. B113110View full textAdd to dashboardCite

Origin of resonance structures in magneto-optical spectra of InSb andIn1−xMnxSb

Cyclotron frequency coupled enhancement of Kerr rotation in low refractive index-dielectric/magneto-optic bilayer thin-film structures

Contact Info

Product

Resources

About

Observation of Landau levels and excitons at room temperature inIn0.53Ga0.47As
Jaschinski
¹
,
Vergöhl
²
,
Schoenes
³

et al. 1998
Phys. Rev. B
11
3
11
0
View full text Add to dashboard Cite

Observation of Landau levels and excitons at room temperature inIn0.53Ga0.47As
Jaschinski
¹
,
Vergöhl
²
,
Schoenes
³

et al. 1998
Phys. Rev. B
11
3
11
0
View full text Add to dashboard Cite