Current-induced nuclear-spin activation in a two-dimensional electron gas

C. R. Dean, B. A. Piot, G. Gervais, L. N. Pfeiffer, and K. W. West
Phys. Rev. B 80, 153301 – Published 1 October 2009

Abstract

Electrically detected nuclear magnetic resonance was studied in detail in a two-dimensional electron gas as a function of current bias and temperature. We show that applying a relatively modest dc-current bias Idc0.5μA can induce an enhanced nuclear-spin signal compared with the signal obtained under similar thermal equilibrium conditions at zero current bias. Our observations suggest that dynamic nuclear-spin polarization by small current flow is possible in a two-dimensional electron gas, allowing for easy manipulation of the nuclear spin by simple switching of a dc current.

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  • Received 5 August 2009

DOI:https://doi.org/10.1103/PhysRevB.80.153301

©2009 American Physical Society

Authors & Affiliations

C. R. Dean1, B. A. Piot1, G. Gervais1, L. N. Pfeiffer2, and K. W. West2

  • 1Department of Physics, McGill University, Montreal, Canada H3A 2T8
  • 2Bell Laboratories, Alcatel-Lucent Inc., Murray Hill, New Jersey 07974, USA

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Issue

Vol. 80, Iss. 15 — 15 October 2009

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