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Pressure Effect Inducing a Larger 1D Character in High Index (311)A Oriented Quantum Wells
Author(s) -
Freire S. L. S.,
Cury L. A.,
Matinaga F. M.,
Moreira M. V. B.,
de Oliveira A. G.
Publication year - 1999
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/(sici)1521-3951(199901)211:1<519::aid-pssb519>3.0.co;2-k
Subject(s) - hydrostatic pressure , blueshift , character (mathematics) , photoluminescence , quantum well , materials science , volume (thermodynamics) , hydrostatic equilibrium , luminescence , quantum , intensity (physics) , condensed matter physics , optics , optoelectronics , thermodynamics , physics , geometry , quantum mechanics , laser , mathematics
The optical properties of AlGaAs/GaAs (311)A and (100) oriented quantum wells are investigated by photoluminescence under high hydrostatic pressure at room temperature. Based on the hydrostatic character of our experiment and making use of the fact that the energy shift per unit pressure can be converted as the energy shift per fractional volume change we correlate the experimental blue shift energy of both (311)A and (100) structures with a volumetric strain induced by pressure. The gradual enhancement of luminescence intensity with pressure, observed only for a (311)A oriented quantum well, is correlated to an enhancement in the 1D character of the channels in this structure, which are characterized by a periodic corrugation pattern along [—2,3,3] on that surface.