Magneto-Optical Four-Wave-Mixing Studies of an Exciton–Biexciton System in a CdMnTe/CdTe/CdMgTe Single Quantum Well

Mino, H.; Kobayashi, Ayumu; Karczewski, G.; Wójtowicz, T.; Kossut, J.; Takeyama, S.

doi:10.1143/jpsj.76.064704

Cited by 2 publications

(2 citation statements)

References 25 publications

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“…In case of the exciton, we consider a simple V-type three-level energy scheme implying that the biexciton binding energy is sufficiently large (about 4.5 meV [20]), so that resonant excitation of the exciton does not drive the biexciton transition. Such a scheme has zero angular momentum projection in the crystal ground state and |±1 in the excited state, as shown in Fig.…”

Section: Theoretical Modelmentioning

confidence: 99%

Polarimetry of photon echo on charged and neutral excitons in semiconductor quantum wells

Poltavtsev

Kapitonov

Yugova

et al. 2019

Sci Rep

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Coherent optical spectroscopy such as four-wave mixing and photon echo generation deliver rich information on the energy levels involved in optical transitions through the analysis of polarization of the coherent response. In semiconductors, it can be applied to distinguish between different exciton complexes, which is a highly non-trivial problem in optical spectroscopy. We develop a simple approach based on photon echo polarimetry, in which polar plots of the photon echo amplitude are measured as function of the angle φ between the linear polarizations of the two exciting pulses. The rosette-like polar plots reveal a distinct difference between the neutral and charged exciton (trion) optical transitions in semiconductor nanostructures. We demonstrate this experimentally by photon echo polarimetry of a CdTe/(Cd, Mg)Te quantum well. The echoes of the trion and donor-bound exciton are linearly polarized at the angle 2 φ with respect to the first pulse polarization and their amplitudes are weakly dependent on φ . While on the exciton the photon echo is co-polarized with the second exciting pulse and its amplitude scales as cos φ .

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Section: Theoretical Modelmentioning

confidence: 99%

Polarimetry of photon echo on charged and neutral excitons in semiconductor quantum wells

Poltavtsev

Kapitonov

Yugova

et al. 2019

Sci Rep

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“…We have observed similar behavior in the FWM signals in (Cd,Mn)Te/CdTe/ (Cd,Mg)Te asymmetric quantum wells. 12) In the case when charged excitons and excitons are involved in the observed quantum beat, the beating should be observable for all combinations of polarization. In Fig.…”

Section: Time-resolved Measurementsmentioning

confidence: 99%

Charged Excitons and Biexcitons in CdZnTe/(Cd,Zn,Mn)Te Quantum Wells in Pulse Magnetic Fields

et al. 2008

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We have studied exciton complexes such as charged excitons and biexcitons in dilute magnetic semiconductor Cd 1Àx Zn x Te/Cd 1ÀxÀy Zn x Mn y Te (x ¼ 0:07, y ¼ 0:43) quantum wells (well widths 4 and 9 nm). Laser excitation power dependence and time-resolved photoluminescence (PL) showed unique features related to excitons, charged excitons, and biexcitons. Four-wave-mixing spectroscopy with different choices of polarized incident light exhibited beating signals arising from exciton-biexciton interaction. Circular polarized PL was measured in magnetic fields of up to 42 T using a pulse magnet. The observed Zeeman splitting and the degree of circular polarization in magnetic fields revealed that the formation of biexcitons is quenched upon applying a magnetic field, and PL from the charged excitons was preserved up to the highest magnetic field.

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Magneto-Optical Four-Wave-Mixing Studies of an Exciton–Biexciton System in a CdMnTe/CdTe/CdMgTe Single Quantum Well

Cited by 2 publications

References 25 publications

Polarimetry of photon echo on charged and neutral excitons in semiconductor quantum wells

Polarimetry of photon echo on charged and neutral excitons in semiconductor quantum wells

Charged Excitons and Biexcitons in CdZnTe/(Cd,Zn,Mn)Te Quantum Wells in Pulse Magnetic Fields

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