Landau level spin diode in a GaAs two dimensional hole system. (20th March 2015)

• Record Type: Journal Article
• Authors: Klochan, O; Hamilton, A R; Gupta, K das; Sfigakis, F; Beere, H E; Ritchie, D A
• Is Part Of: New journal of physics. Volume 17:Number 3(2015:Mar.)
• Publication Date: 2015-03-20
• Subjects: two-dimensional hole system -- Landau level spin diode -- hole–nuclear spin coupling; 75.76.+j -- 73.43.Fj -- 76.60.-k; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/17/3/033035
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: We have fabricated and characterized a Landau level spin diode in a GaAs two-dimensional hole system. We used the spin diode to probe the hyperfine coupling between hole and nuclear spins and found no detectable net nuclear spin polarization, indicating that hole–nuclear spin flip-flop processes are suppressed by at least factor of 50 compared to GaAs electron systems.