6533b85ffe1ef96bd12c1a0b

RESEARCH PRODUCT

Exciton mass increase in a GaAs/AlGaAs quantum well in a transverse magnetic field

V. A. LovtciusV. G. DavydovEvgeniy UbyivovkEvgeniy UbyivovkIvan V. IgnatievS. Yu. BodnarP. S. GrigoryevD. K. LoginovYu. P. EfimovS. A. EliseevV. Yu. Mikhailovskii

subject

Condensed Matter::Quantum GasesPhysicsCondensed matter physicsCondensed Matter::OtherExcitonHeterojunction02 engineering and technologyCondensed Matter::Mesoscopic Systems and Quantum Hall Effect021001 nanoscience & nanotechnology01 natural sciencesMagnetic fieldCondensed Matter::Materials Science0103 physical sciencesPhenomenological modelPolaritonDiamagnetism010306 general physics0210 nano-technologyBiexcitonQuantum well

description

In this work we have investigated the exciton reflectance spectra of a high quality heterostructure with a GaAs/AlGaAs quantum well in a transverse magnetic field (Voigt geometry). It has been shown that application of the magnetic field leads to a decrease of energy distance between spectral features related to the excitonlike polariton modes. This effect has been treated as the magneto-induced increase of the exciton mass. We have shown that the hydrogenlike and diamagnetic exciton models are insufficient to describe the exciton behavior in the intermediate magnetic fields studied. Considering the symmetry of the problem, we have developed a phenomenological model which adequately describes the experimental data.

yearjournalcountryeditionlanguage
2017-05-22Physical Review B
https://doi.org/10.1103/physrevb.95.195311