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Fröhlich, D.; Schlierkamp, M.; Schubert, Janette E.; Spitzer, S.; Arimoto, Osamu; Nakamura, Katsumi

doi:10.1103/physrevb.49.10337

Cited by 22 publications

(9 citation statements)

References 20 publications

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“…The energy shift caused by the Zeeman effect is about 100 peV. The parameters differ from the values which were previously published [5] and which are also listed in Table 1. In the previous investigations [5] it was necessary to include optical data of reflection measurements to determine dielectric constants.…”

Section: Resultsmentioning

confidence: 92%

“…laser with a photon energy of 0.117eV induces the transition from the 1s exciton to nP excitons. Since the k-vectors are perpendicular to the bc-plane, n P b ( r t ) and nP,(TT) excitons are excited by polarization directions of the C02 laser parallel to the b and c-axes, respectively [5]. Due to the anisotropy of the crystal there is a large splitting between the 2Pb and the 2P, exciton states of about 7meV.…”

Section: Resultsmentioning

confidence: 99%

“…The tunable probe laser is a Ti:sapphire laser (model 3900 from Spectra Physics), which is pumped by an argon ion laser. The experimental set-up is described in more detail by Frohlich et al [5].…”

Section: Methodsmentioning

confidence: 99%

“…TPA is therefore an ideal method for the investigation of the material parameters of anisotropic semiconductors like P-ZnPz. From measurements without an external magnetic field one can already derive four parameters [5]. One is thus able to determine reduced exciton masses if the dielectric constants are known.…”

Section: Introductionmentioning

confidence: 99%

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Two‐photon absorption and magnetoabsorption of P excitons in β‐ZnP₂

Engbring

Fröhlich

Schepe

et al. 1996

Physica Status Solidi (b)

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Electronic transitions in biaxial F-ZnPz are studied by two-photon absorption. The anisotropy of the crystal leads to a large energy splitting of the P excitons. The energy shift of the P excitons and Landau transitions axe observed in a magnetic field up to 6T. We present a theory which describes the anisotropic P excitons in a magnetic field. The analysis of the experimental data allows the determination of the anisotropic dielectric constants and effective masses of the valence and conduction bands.

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Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Two‐photon absorption and magnetoabsorption of P excitons in β‐ZnP₂

Engbring

Fröhlich

Schepe

et al. 1996

Physica Status Solidi (b)

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“…A definite difference in the Zeeman splitting pattern of the triplet luminescence between the monoclinic and its twin polymorph was confirmed. 13,14 On the other hand, Fröhlich et al observed anisotropic p exciton series in ␤-ZnP 2 by the two-photon absorption technique, 15 and also determined many exciton parameters by the magnetoabsorption of the p excitons. 16 In this work, excitation spectra for the 1s triplet exciton luminescence under a magnetic field up to 1 T are measured in detail at 2 K in order to investigate the fine structure of the excitons and also the relaxation processes in the triplet exciton system.…”

Section: Introductionmentioning

confidence: 99%

Magnetic field effects on the triplet excitons inβ−ZnP2:Possibility of optical dipole relaxation in the exciton system

2002

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Magnetic field effects on the excitation spectra of the 1s triplet exciton luminescence in monoclinic ␤-ZnP 2 are observed at 2 K. Under a magnetic field of 1 T, the luminescence splits into two components with a separation of about 0.2 meV. The excitation spectrum for each of Zeeman-split luminescence components is measured. The spectrum for one component is definitely different from that for the other. Excitation into some of the excitation peaks produces only one component of the luminescence. It is concluded that the triplet excitons relax through a selective path. Relaxation processes through the multiple phonon scatterings are discussed, and possible processes through optical dipole transitions in the triplet exciton system of ␤-ZnP 2 are also proposed.

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Multiserial Structure of Excitonic Energy Spectrum in Monoclinic ZnP2 Crystal

Gorban

Bilyi

Dmitruk

et al. 1998

phys. stat. sol. (b)

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One-photon excitonic absorption spectra of the monoclinic ZnP 2 b-ZnP 2 crystals are analysed. There exist four series characterized by the serial law E n E g À Ryan 2 Dan 3 with the same value of energy gap E g 1X6026 meV. By variational calculations of the exciton energy dependence on the anisotropy parameter, we conclude an appearance of several hydrogen-like series caused by the splitting of excitonic states with different quantum numbers l and jmj due to the low symmetry of the crystal. Conclusions are made that two series with D 0 can be attributed to the P-states of an exciton, and two others with D T 0 to the S-states of an exciton. Calculations of e±h exchange interaction in an S-exciton are performed. Splitting of the series with D T 0 is interpreted to have exchange origin (ortho±para-splitting). Its value is obtained to be 12.7 meV.

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Two-photon absorption ofPexcitons inZnP2

Cited by 22 publications

References 20 publications

Two‐photon absorption and magnetoabsorption of P excitons in β‐ZnP₂

Two‐photon absorption and magnetoabsorption of P excitons in β‐ZnP₂

Magnetic field effects on the triplet excitons inβ−ZnP2:Possibility of optical dipole relaxation in the exciton system

Multiserial Structure of Excitonic Energy Spectrum in Monoclinic ZnP2 Crystal

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Two-photon absorption ofPexcitons inZnP2

Cited by 22 publications

References 20 publications

Two‐photon absorption and magnetoabsorption of P excitons in β‐ZnP2

Two‐photon absorption and magnetoabsorption of P excitons in β‐ZnP2

Magnetic field effects on the triplet excitons inβ−ZnP2:Possibility of optical dipole relaxation in the exciton system

Multiserial Structure of Excitonic Energy Spectrum in Monoclinic ZnP2 Crystal

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Two‐photon absorption and magnetoabsorption of P excitons in β‐ZnP₂

Two‐photon absorption and magnetoabsorption of P excitons in β‐ZnP₂