Premium
Hydrostatic pressure, temperature and aluminum concentration effects on the ground state of coupled donors in a GaAs–Ga 1− x Al x As quantum well
Author(s) -
Fulla M. R.,
Suaza Y. A.,
Marín J. H.
Publication year - 2015
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/pssb.201451407
Subject(s) - hydrostatic pressure , binding energy , hydrostatic equilibrium , ground state , aluminium , chemistry , quantum , nucleus , atomic physics , thermodynamics , physics , quantum mechanics , organic chemistry , biology , microbiology and biotechnology
The combined effects of hydrostatic pressure, temperature, and aluminum concentration on the binding and total energies of two coupled donorsD 2 +are analyzed using a variational procedure. The effects of changing the nucleus–nucleus relative positions and the quantum well size on theD 2 +complex binding energy were also analyzed. The results show that an increase in the temperature yields a decrease of theD 2 +binding energy while an increase in the aluminum concentration or hydrostatic pressure, enhance theD 2 +binding energy favoring the stability ofD 2 +molecular complex under strong quantum confinement conditions.