Spin-polarized electron transport of a self-assembled organic monolayer on a Ni(111) substrate: An organic spin switch

Haiying He, Ravindra Pandey, Ranjit Pati, and Shashi P. Karna
Phys. Rev. B 73, 195311 – Published 9 May 2006

Abstract

Using density functional theory and the Bardeen, Tersoff, and Hamann formalism we have calculated spin-polarized electron transport in a system involving a nonbonded magnetic probe tip and a self-assembled monolayer (SAM) of benzene-1,4-dithiol on a Ni(111) substrate. A significantly higher tunneling current is obtained for a configuration in which the spin of the probe tip is aligned parallel to that of the substrate than for a configuration with antiparallel alignment—an effect prerequisite for an organic spin switch.

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  • Received 7 November 2005

DOI:https://doi.org/10.1103/PhysRevB.73.195311

©2006 American Physical Society

Authors & Affiliations

Haiying He, Ravindra Pandey, and Ranjit Pati*

  • Department of Physics and Multi-Scale Technology Institute, Michigan Technological University, Houghton, Michigan 49931, USA

Shashi P. Karna

  • Weapons and Materials Directorate, U.S. Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005-5069, USA

  • *Corresponding author. Electronic address: patir@mtu.edu
  • Corresponding author. Electronic address: skarna@arl.army.mil

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Issue

Vol. 73, Iss. 19 — 15 May 2006

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