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arxiv: cond-mat/9803037 · v1 · submitted 1998-03-03 · ❄️ cond-mat.mtrl-sci

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

V.Kravchenko(1) , N.Minina(1) , A.Savin(1) , C.B.Sorensen(2) , O.P.Hansen(2) , W.Kraak(3) ((1)Physics Faculty , Moscow State University , Moscow
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Russia (2)Oersted Laboratory Niels Bohr Institute Copenhagen (3)Institute of Physics Humboldt University Berlin)
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keywords compressionuniaxialscatteringholehole-holeunderalgaasanalysis
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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 $\tau_{01}$ of the relative momentum reveals 4.5 times increase at a uniaxial compression of 1.3 kbar.

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