Search Results - "Brum, JA"

Electronic states in semiconductor heterostructures by Bastard, G., Brum, J.

“…This paper describes the electronic energy levels of semiconductor heterostructures within the envelope function scheme. Quantum well and superlattice…”
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The role of finite hole mass in the negatively charged exciton in two dimensions by A. Narvaez, Gustavo, Hawrylak, Pawel, A. Brum, José

“…The role of finite hole mass on the ground and excited states of the negatively charged exciton in two dimensions is discussed. We present results of…”
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Effects of an electron gas on the negative trion in semiconductor quantum wells by Dacal, Luis C.O, Brum, José A

“…We present here the results of calculations of the negative trion binding energy in the presence of an electron gas. The screening of the Coulomb interaction…”
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Observation of Tamm states in superlattices by OHNO, H, MENDEZ, E. E, BRUM, J. A, HONG, J. M, AGULLO-RUEDA, F, CHANG, L. L, ESAKI, L

“…Tamm states are intentionally introduced in AlGaAs/GaAs superlattices by a terminating layer of AlAs. Formation of these states is manifested by excitonic…”
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Exciton center-of-mass dispersion in semiconductor quantum wells by Triques, Adriana L. C., Brum, José A.

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Zeeman bifurcation of quantum-dot spectra by HANSEN, W, SMITH, T. P. III, LEE, K. Y, BRUM, J. A, KNOEDLER, C. M, HONG, J. M, KERN, D. P

“…The magnetic-field-induced bifurcation of quantum levels into surface states and bulklike Landau states is observed. The disruption of the electric field…”
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Micro-photoluminescence of self-assembled quantum dots in the presence of an electron gas by Nakaema, M.K.K., Brasil, M.J.S.P., Iikawa, F., Ribeiro, E., Heinzel, T., Ensslin, K., Medeiros-Ribeiro, G., Petroff, P.M., Brum, J.A.

“…InGaAs/GaAs self-assembled quantum dots in the presence of a two-dimensional electron gas were studied by micro-photoluminescence. Several sharp optical…”
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Negative Trion Binding Energy in Semiconductor Quantum Wells: Effects of Structural Confinement and Longitudinal Electric Field by Dacal, L.C.O., Brum, J.A.

“…We present variational calculations of the binding energy for negatively charged excitons in idealized GaAs/Al0.3Ga0.7As quantum wells using a physically clear…”
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Multi-charged acceptor centers in p-doped Si/Si1−xGex/Si quantum wells in the presence of a magnetic field by Rego, Luis G.C., Brum, José A, Hawrylak, Pawel

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Many body effects in a modulation-doped semiconductor quantum well by DELALANDE, C, BASTARD, G, ORGONASI, J, BRUM, J. A, LIU, H. W, VOOS, M, WEIMANN, G, SCHLAPP, W

“…The electron areal concentration n(s) of a one-sided, 130 A-thick GaAs- Ga(Al)As modulation-doped quantum well is continuously varied from 0 to 6.6 x 10 to the…”
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Electronic structure of holes in modulation doped p-Si1-xGex/Si strained quantum wells in a magnetic field by REGO, L. G. C, HAWRYLAK, P, BRUM, J. A

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Magneto-excitons in droplets of a chiral Luttinger liquid formed in quantum dots in a magnetic field by Hawrylak, Pawel, Wojs, Arkadiusz, Brum, Jose A.

“…Magneto-excitons in droplets of a spin polarized chiral Luttinger liquid formed in quantum dots in a magnetic field are studied. The coupling of…”
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Screening effects on the spin splitting in n-doped GaAs/AlGaAs quantum wells by Urdanivia, J., Iikawa, F., Brum, J.A., Maialle, M.Z., Hawrylak, P., Wasilewski, Z.

“…The spin dynamics of free carriers is studied by time-resolved photoluminescence in n-type GaAs/AlGaAs modulation-doped multi-quantum wells. We study a series…”
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Carrier capture time in T-shaped semiconductor quantum wires by Narvaez, Gustavo A., Aguiar, Maria Carolina de O., Brum, José A

“…We investigate the capture time from quasi-two-dimensional (2D) electrons to quasi-one-dimensional electrons (1D) in T-shaped semiconductor quantum wires. Two…”
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Magnetoexciton anisotropy in quantum wells versus quantum wires by Marquezini, MV, Brasil, MJ, Cotta, MA, Brum, JA, Bernussi, AA

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Binding Energy of Negatively Charged Exciton in a Semiconductor Quantum Well: The Role of Interface Defects by Dacal, L.C.O., Ferreira, R., Bastard, G., Brum, J.A.

“…We present a model to take into account the interface defects contribution on the binding energy of charged exciton in GaAs/Al0.3Ga0.7As quantum wells. The…”
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Mobile excitons and Fermi edge singularities in an interacting 2D electron gas by Brum, J.A., Brown, S., Hawrylak, P., Young, J.F., Wasilewski, Z.

“…We present theoretical and experimental results on the evolution of the threshold absorption of a 2D electron gas as a function of electron density. We pay…”
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Effects of the Heavy- and Light-Hole Mixing in the Exciton Dynamics in Semiconductor Quantum Wells by de O. Aguiar, M. Carolina, Brum, José A.

“…We present the calculation of the low temperature exciton bimolecular formation rate in quantum wells through acoustic phonon scattering taking into account…”
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InGaAs/InP quantum wells with thickness modulation by Brasil, M. J. S. P., Bernussi, A. A., Cotta, M. A., Marquezini, M. V., Brum, J. A., Hamm, R. A., Chu, S. N. G., Harriott, L. R., Temkin, H.

“…We investigated the optical properties of lattice-matched InGaAs/InP quantum wells grown by metalorganic molecular beam epitaxy on top of patterned InP buffer…”
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Magnetic anisotropy of a one-dimensional electron system by SMITH, T. P. III, BRUM, J. A, HONG, J. M, KNOEDLER, C. M, ARNOT, H, ESAKI, L

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