Noncollinear paramagnetism of a GaAs two-dimensional hole system

L A Yeoh; A Srinivasan; O Klochan; R Winkler; U Zülicke; M Y Simmons; D A Ritchie; M Pepper; A R Hamilton

doi:10.1103/PhysRevLett.113.236401

Noncollinear paramagnetism of a GaAs two-dimensional hole system

Phys Rev Lett. 2014 Dec 5;113(23):236401. doi: 10.1103/PhysRevLett.113.236401. Epub 2014 Dec 3.

Authors

L A Yeoh¹, A Srinivasan¹, O Klochan¹, R Winkler², U Zülicke³, M Y Simmons⁴, D A Ritchie⁵, M Pepper⁶, A R Hamilton¹

Affiliations

¹ School of Physics, University of New South Wales, Sydney, New South Wales 2052, Australia.
² Department of Physics, Northern Illinois University, De Kalb, Illinois 60115, USA.
³ School of Chemical and Physical Sciences and MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6140, New Zealand.
⁴ Centre for Quantum Computation and Communication Technology, School of Physics, University of New South Wales, Sydney, New South Wales 2052, Australia.
⁵ Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom.
⁶ Department of Electronic and Electrical Engineering, University College London, London WC1E 7JE, United Kingdom.

PMID: 25526140
DOI: 10.1103/PhysRevLett.113.236401

Abstract

We have performed transport measurements in tilted magnetic fields in a two-dimensional hole system grown on the surface of a (311)A GaAs crystal. A striking asymmetry of Shubnikov-de Haas oscillations occurs upon reversing the in-plane component of the magnetic field along the low-symmetry [2[over ¯]33] axis. As usual, the magnetoconductance oscillations are symmetric with respect to reversal of the in-plane field component aligned with the high-symmetry [011[over ¯]] axis. Our observations demonstrate that an in-plane magnetic field can generate an out-of-plane component of magnetization in a low-symmetry hole system, creating new possibilities for spin manipulation.