Suppression of hole-hole scattering in GaAs/AlGaAs heterostructures under uniaxial compression

/ Authors

V.Kravchenko, N.Minina, A.Savin, C.B.Sorensen, O.P.Hansen, W.Kraak Physics Faculty, M. University, Moscow, Russia Oersted Laboratory, Niels Bohr Institute

and 3 more authors

C. I. O. Physics, Humboldt University, Berlin

/ Abstract

Resistance, magnetoresistance and their temperature dependencies have been investigated in the 2D hole gas at a [001] p-GaAs/Al 0 . 5 Ga 0 . 5 As heterointerface under [110] uniaxial compression. Analysis performed in the frame of hole-hole scattering between carriers in the two spin splitted subbands of the ground heavy hole state indicates, that h-h scattering is strongly suppressed by uniaxial compression. The decay time τ 01 of the relative momentum reveals 4.5 times increase at a uniaxial compression of 1.3 kbar.

DOI: 10.1103/PhysRevB.59.2376