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, and A. R. Hamilton

Phys. Rev. Lett. 113, 236401 – Published 3 December 2014

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 $[\bar{2} 33]$ axis. As usual, the magnetoconductance oscillations are symmetric with respect to reversal of the in-plane field component aligned with the high-symmetry $[01 \bar{1}]$ 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.

Received 6 September 2014

DOI:https://doi.org/10.1103/PhysRevLett.113.236401

Authors & Affiliations

L. A. Yeoh¹, A. Srinivasan¹, O. Klochan¹, R. Winkler², U. Zülicke³, M. Y. Simmons⁴, D. A. Ritchie⁵, M. Pepper⁶, and A. R. Hamilton^1,*

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

^*Alex.Hamilton@unsw.edu.au

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Vol. 113, Iss. 23 — 5 December 2014

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