Angle dependence of the photonic enhancement of the magneto-optical Kerr effect in DMS layers

Koba, Marcin; Suffczyński, J.

doi:10.1209/0295-5075/108/27004

Cited by 10 publications

(9 citation statements)

References 33 publications

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“…Another type of material is a semiconductor system relatively resistant to manganese induced optical degradation: Cd 1−x Mn x Te, which was already used as a high refractive index layer in microcavities with Cd 1−x Mn x Te quantum wells 24,25 . Indeed such a system exhibits strong magneto-optical properties [26][27][28] related to the shift of both exciton and photon states 24,29 , therefore it can be used for tuning the exciton-photon energy difference and for tuning the Rabi oscillation frequency [30][31][32] .…”

Section: Introductionmentioning

confidence: 99%

Angular dependence of giant Zeeman effect for semimagnetic cavity polaritons

et al. 2017

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The observation of spin-related phenomena of microcavity polaritons has been limited due to weak Zeeman effect of non-magnetic semiconductors. We demonstrate that the incorporation of magnetic ions into quantum wells placed in a non-magnetic microcavity results in enhanced effects of magnetic field on exciton-polaritons. We show that in such a structure the Zeeman splitting of exciton-polaritons strongly depends on the photon-exciton detuning and polariton wavevector. Our experimental data are explained by a model where the impact of magnetic field on the lower polariton state is directly inherited from the excitonic component, and the coupling strength to cavity photon is modified by external magnetic field.

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Section: Introductionmentioning

confidence: 99%

Angular dependence of giant Zeeman effect for semimagnetic cavity polaritons

et al. 2017

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“…It was shown that the magneto-optical Kerr effect can be amplified by placing a DMS layer on a distributed Bragg reflector. [6][7][8][9][10][11] Magneto-optical effects of cavity polaritons can be enhanced by embedding quantum wells containing Mn ions in the cavity. [12][13][14][15][16][17][18][19] The structure of the microcavity sample studied in this work is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Magnetic field effect on the lasing threshold of a semimagnetic polariton condensate

Rousset¹,

Piętka²,

Król³

et al. 2017

Phys. Rev. B

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We evidence magnetic field triggered polariton lasing in a microcavity containing semimagnetic quantum wells. This effect is associated with a decrease of the polariton lasing threshold power in magnetic field. The observed magnetic field dependence of the threshold power systematically exhibits a minimum which only weakly depends on the zero-field photon-exciton detuning. These results are interpreted as a consequence of the polariton giant Zeeman splitting which in magnetic field: leads to a decrease of the number of accessible states in the lowest polariton branch by a factor of two, and substantially changes the photon-exciton detuning.

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“…Such a mechanism has been discussed to enhance the MOKE in Fe/Cu bilayers 33 . The photonic effect can also be used to enhance the MOKE because of multiple interference of light within the magnetic multilayers [34][35][36] . Cavity enhancement of the MOKE has also been reported, in which a dielectric layer acts as a Fabry-Perot optical cavity [37][38][39] .…”

Section: Introductionmentioning

confidence: 99%

Enhanced magneto-optical Kerr effect at Fe/insulator interfaces

Takahashi

Maekawa

2017

Phys. Rev. B

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Using density functional theory calculations, we have found an enhanced magneto-optical Kerr effect in Fe/insulator interfaces. The results of our study indicate that interfacial Fe atoms in the Fe films have a low-dimensional nature, which causes the following two effects: (i) The diagonal component σxx of the optical conductivity decreases dramatically because the hopping integral for electrons between Fe atoms is suppressed by the low dimensionality. (ii) The off-diagonal component σxy of the optical conductivity does not change at low photon energies, but it is enhanced at photon energies around 2 eV, where we obtain enhanced orbital magnetic moments and spin-orbit correlations for the interfacial Fe atoms. A large Kerr angle develops in proportion to the ratio σxy/σxx. Our findings indicate an efficient way to enhance the effect of spin-orbit coupling at metal/insulator interfaces without using heavy elements.

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Angle dependence of the photonic enhancement of the magneto-optical Kerr effect in DMS layers

Cited by 10 publications

References 33 publications

Angular dependence of giant Zeeman effect for semimagnetic cavity polaritons

Angular dependence of giant Zeeman effect for semimagnetic cavity polaritons

Magnetic field effect on the lasing threshold of a semimagnetic polariton condensate

Enhanced magneto-optical Kerr effect at Fe/insulator interfaces

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