Le Journal de Physique IV 03 (1993) C5-339-C5-342
Quantum wires obtained by dislocation slippingF. VOILLOT1, R. CARLES1, M. GOIRAN1, C. GUASCH1, J.P. PEYRADE1 and E. BEDEL2
1 Laboratoire de Physique des Solides, LA074, INSAT, 31077 Toulouse cedex, France
2 LAAS du CNRS, 7 av. du Colonel Roche, 31077 Toulouse cedex, France
Dislocation slipping is used as an atomic scale tool to cut a 5 nm GaAs single quantum well (QW) grown by MBE on a (001) GaAs substrate into quantum wires (QWW). Three point deformation bending is used to control dislocation slipping. The minimum value of the QWW widths is evaluated to 25 nm. PL studies after deformation show intense peak, shifted in regard to the undeformed SQW in good agreement with theory. Raman scattering results confirm the additional lateral confinement.
© EDP Sciences 1993