APL Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter iResearch App Facebook

Applied Physics Letters / Volume 91 / Issue 12 / NANOSCALE SCIENCE AND DESIGN

Appl. Phys. Lett. 91, 123105 (2007); http://dx.doi.org/10.1063/1.2784934 (3 pages)

Gate-tunable graphene spin valve

Sungjae Cho, Yung-Fu Chen, and Michael S. Fuhrer

Department of Physics and Center for Nanophysics and Advanced Materials, University of Maryland, College Park, Maryland 20742

View MapView Map

(Received 16 July 2007; accepted 22 August 2007; published online 19 September 2007)

The authors perform nonlocal four-probe spin-valve experiments on graphene contacted by ferromagnetic Permalloy electrodes. They observe sharp switching and often sign reversal of the nonlocal resistance at the coercive field of the electrodes, indicating the presence of a spin current between injector and detector. The nonlocal spin-valve signal changes magnitude and sign with back-gate voltage, and is observed up to T = 300 K. The gate voltage variation of the spin-valve signal may result from quantum-coherent transport, as evidenced by Fabry-Pérot-like oscillations of the current.

© 2007 American Institute of Physics

RELATED DATABASES

To view database links for this article, you need to log in.

KEYWORDS and PACS

Keywords

carbon, coercive force, magnetoelectronics, spin polarised transport, spin valves

PACS

  • 85.75.-d

    Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields

  • 85.70.Ec

    Magnetostrictive, magnetoacoustic, and magnetostatic devices

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2784934

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.

    References

    C. L. Kane and E. J. Mele, Phys. Rev. Lett. 95, 226801 (2005).

    D. S. L. Abergel, A. Russell, and V. I. Fal'ko, Appl. Phys. Lett. 91, 063125 (2007)APPLAB000091000006063125000001.

    N. Tombros, S. J. van der Molen, and B. J. van Wees, Phys. Rev. B 73, 233403 (2006).

    S. Garzon, I. Zutic, and R. A. Webb, Phys. Rev. Lett. 94, 176601 (2005).

    S. Datta and B. Das, Appl. Phys. Lett. 56, 665 (1990)APPLAB000056000007000665000001.

    H. T. Man, I. J. W. Wever, and A. F. Morpurgo, Phys. Rev. B 73, 241401 (2006).


For access to citing articles, you need to log in.


Figures (4)

Access to article objects (figures, tables, multimedia) requires a subscription; log in to view available files.
(Access to supplementary files, where available, is free for this journal.)



Close

Google Calendar

ADVERTISEMENT

Your Recent History Recent History Help

Recently Viewed

  1. Gate-tunable graphene spin valve
Go to AIP Home   © AIP Publishing LLC
close