Optically detected electron nuclear double resonance (ODENDOR) experiments in semi-insulating GaAs show that the As-antisite ESR spectrum is due to an arsenic antisite-As interstitial pair. The interaction parameters and symmetry of the nearest and next nearest As-ligands and of the single interstitial As atom were analysed. From a quantitative interpretation of the quadrupole interaction parameters the place and charge state of the interstitial As can be inferred.L'étude du défaut EL2 dans GaAs semi-isolant par spectroscopie ENDOR détectée optiquement (ODENDOR) montre que ce défaut est dû à une paire d'antisite arsenic-interstitiel arsenic, AsGa-Asi. Les paramètres d'interaction hyperfine ainsi que la symétrie des premiers et deuxièmes voi...
Nous avons étudié l'influence des espèces moléculaires d'arsenic : As2 ou As4 sur les propriétés des...
The photo response of the EL2 absorption band and of the As+ Ga ESR signal in GaAs is described and ...
Studies on the electrical and optical properties of EL2 in various GaAs crystals are described espec...
Optically detected electron nuclear double resonance (ODENDOR) experiments in semi-insulating GaAs s...
EL2, the dominant deep defect in undoped as-grown GaAs has attracted tremendous interest because of ...
Even after a decade of intense investigation, the microscopic nature of EL2 is still controversial. ...
A self-consistent-charge density-functional based tight binding method was used to investigate the l...
The atomic configuration of the EL2 defect in its stable state has been determined as an arsenic ant...
To investigate the lattice distortion caused by point defects in As-rich GaAs, we make use of a self...
We have studied the metastability of the antistructure (arsenic-antisite gallium-antisite) pair in G...
The levels and excitation energies of a weakly interacting AsGa - Asi defect pair have been calculat...
A critical discussion of the experimental observations made on the EL2 defect in GaAs is made which ...
For more than a decade the interest ingroup-V antisite def ects in GaAs was focusing on the intrinsi...
The midgap donor level EL2 is a very important defect because of the role it plays in the compensati...
GaAs layers grown by the molecular beam epitaxy (MBE) method at low temperatures (200-degrees-C) and...
Nous avons étudié l'influence des espèces moléculaires d'arsenic : As2 ou As4 sur les propriétés des...
The photo response of the EL2 absorption band and of the As+ Ga ESR signal in GaAs is described and ...
Studies on the electrical and optical properties of EL2 in various GaAs crystals are described espec...
Optically detected electron nuclear double resonance (ODENDOR) experiments in semi-insulating GaAs s...
EL2, the dominant deep defect in undoped as-grown GaAs has attracted tremendous interest because of ...
Even after a decade of intense investigation, the microscopic nature of EL2 is still controversial. ...
A self-consistent-charge density-functional based tight binding method was used to investigate the l...
The atomic configuration of the EL2 defect in its stable state has been determined as an arsenic ant...
To investigate the lattice distortion caused by point defects in As-rich GaAs, we make use of a self...
We have studied the metastability of the antistructure (arsenic-antisite gallium-antisite) pair in G...
The levels and excitation energies of a weakly interacting AsGa - Asi defect pair have been calculat...
A critical discussion of the experimental observations made on the EL2 defect in GaAs is made which ...
For more than a decade the interest ingroup-V antisite def ects in GaAs was focusing on the intrinsi...
The midgap donor level EL2 is a very important defect because of the role it plays in the compensati...
GaAs layers grown by the molecular beam epitaxy (MBE) method at low temperatures (200-degrees-C) and...
Nous avons étudié l'influence des espèces moléculaires d'arsenic : As2 ou As4 sur les propriétés des...
The photo response of the EL2 absorption band and of the As+ Ga ESR signal in GaAs is described and ...
Studies on the electrical and optical properties of EL2 in various GaAs crystals are described espec...