• Featured in Physics

Observation of Intrinsic Inverse Spin Hall Effect

Lalani K. Werake, Brian A. Ruzicka, and Hui Zhao
Phys. Rev. Lett. 106, 107205 – Published 9 March 2011
Physics logo See Focus story: Electrons Curve without Help

Abstract

We report observation of intrinsic inverse spin Hall effect in undoped GaAs multiple quantum wells with a sample temperature of 10 K. A transient ballistic pure spin current is injected by a pair of laser pulses through quantum interference. By time resolving the dynamics of the pure spin current, the momentum relaxation time is deduced, which sets the lower limit of the scattering time between electrons and holes. The transverse charge current generated by the pure spin current via the inverse spin Hall effect is simultaneously resolved. We find that the charge current is generated well before the first electron-hole scattering event. Generation of the transverse current in the scattering-free ballistic transport regime provides unambiguous evidence for the intrinsic inverse spin Hall effect.

  • Figure
  • Figure
  • Figure
  • Received 18 September 2010

DOI:https://doi.org/10.1103/PhysRevLett.106.107205

© 2011 American Physical Society

Focus

Key Image

Electrons Curve without Help

Published 25 February 2011

Experiments show that the spin of an electron can cause its path to curve as it moves through a semiconductor, even in the absence of scattering, which may be important for future devices.

See more in Physics

Authors & Affiliations

Lalani K. Werake, Brian A. Ruzicka, and Hui Zhao*

  • Department of Physics and Astronomy, The University of Kansas, Lawrence, Kansas 66045, USA

  • *Corresponding author. huizhao@ku.edu

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 106, Iss. 10 — 11 March 2011

Reuse & Permissions
Access Options
CHORUS

Article Available via CHORUS

Download Accepted Manuscript
Collection
Heating up of Superconductors
January 27, 2017

This collection marks the 30th anniversary of the discovery of high-temperature superconductors. The papers selected highlight some of the advances that have been made to date, both in understanding why these compounds behave in the way they do, and in utilizing them in applications. The papers included in the collection have been made free to read.

APS and CERN Sign Open Access Agreement for SCOAP3

APS and CERN, the host organization of SCOAP3 (Sponsoring Consortium for Open Access Publishing in Particle Physics), have signed an agreement to make the high-energy physics (HEP) articles published in three leading APS journals open access beginning January 1, 2018. This agreement acts to support the publishing of open access content for wider benefit of the HEP community.

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×