Strong spin-orbit interactions and weak antilocalization in carbon doped p-type GaAs heterostructures

Abstract

We present a comprehensive study of the low-field magnetoresistance in carbon doped p-type GaAs/AlGaAs heterostructures aiming at the investigation of spin-orbit interaction effects. The following signatures of exceptionally strong spin-orbit interactions are simultaneously observed: a beating in the Shubnikov-de Haas oscillations, a classical positive magnetoresistance due to the presence of the two spin-split subbands, and a weak anti-localization dip in the magnetoresistance. The spin-orbit induced splitting of the heavy hole subband at the Fermi level is determined to be around 30% of the total Fermi energy. The phase coherence length of holes of around 2.5 $\mu$m at a temperature of 70 mK, extracted from weak anti-localization measurements, is promissing for the fabrication of phase-coherent p-type nanodevices.

8 pages, 6 figures;

References in corpus (13)

• Quantum Transport in Semiconductor Nanostructures
• Weak Antilocalization and Spin Precession in Quantum Wells
• The Effect of Spin Splitting on the Metallic Behavior of a Two-Dimensional System
• Mesoscopic decoherence in Aharonov-Bohm rings
• Charge fluctuation induced dephasing in a gated mesoscopic interferometer
• Weak antilocalization in high-mobility two-dimensional systems
• Aharonov-Bohm oscillations in the presence of strong spin-orbit interactions
• On the Relation between Interband Scattering and the "Metallic Phase" of Two Dimensional Holes in GaAs/AlGaAs
• Weak localisation in AlGaAs/GaAs p-type quantum wells
• Magnetotransport in C-doped AlGaAs heterostructures
• Electron spin-orbit splitting in InGaAs/InP quantum well studied by means of the weak antilocalization and spin-zero effects in tilted magnetic fields
• Spin Splitting in GaAs (100) Two-Dimensional Holes
• Low-field magnetoresistance in GaAs 2D holes

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