APS March Meeting 2014
Volume 59, Number 1
Monday–Friday, March 3–7, 2014;
Denver, Colorado
Session D40: Invited Session: Graphene Spintronics and Magnetism
2:30 PM–5:30 PM,
Monday, March 3, 2014
Room: Mile High Ballroom 2B-3B
Sponsoring
Unit:
GMAG
Chair: Wei Han, IBM
Abstract ID: BAPS.2014.MAR.D40.1
Abstract: D40.00001 : Spin transport in epitaxial graphene
2:30 PM–3:06 PM
Preview Abstract
Abstract
Author:
Pierre Seneor
(Unit\'e Mixte de Physique CNRS/Thales)
Spintronics is a paradigm focusing on spin as the information vector in fast
and ultra-low-power non volatile devices such as the new STT-MRAM. Beyond
its widely distributed application in data storage it aims at providing more
complex architectures and a powerful beyond CMOS solution for information
processing. The recent discovery of graphene has opened novel exciting
opportunities in terms of functionalities and performances for spintronics
devices. We will present experimental results allowing us to assess the
potential of graphene for spintronics. We will show that unprecedented
highly efficient spin information transport can occur in epitaxial graphene
leading to large spin signals and macroscopic spin diffusion lengths
($\sim$ 100 microns), a key enabler for the advent of envisioned
beyond-CMOS spin-based logic architectures. We will also show that how the
device behavior is well explained within the framework of the Valet-Fert
drift-diffusion equations [1]. Furthermore, we will show that a thin
graphene passivation layer can prevent the oxidation of a ferromagnet,
enabling its use in novel humide/ambient low-cost processes for spintronics
devices, while keeping its highly surface sensitive spin current
polarizer/analyzer behavior and adding new enhanced spin filtering
property [2]. These different experiments unveil promising uses of graphene
for spintronics.\\[4pt]
In collaboration with B. Dlubak, Unite Mixte de Physique CNRS/Thales, Palaiseau, France \& Universite Paris-Sud, Orsay, France and University of Cambridge; M.-B. Martin, H. Yang, Unite Mixte de Physique CNRS/Thales and Universite Paris-Sud; R. Weatherup, University of Cambridge; M. Sprinkle, GeorgiaTech, Atlanta/Institut Neel; B. Servet, S. Xavier, Unite Mixte de Physique CNRS/Thales and Universite Paris-Sud; C. Berger, W. de Heer, GeorgiaTech, Atlanta/Institut Neel; S. Hoffman, J. Robertson, University of Cambridge; and C. Deranlot, R. Mattana, H. Jaffres, A. Anane, F. Petroff, P. Seneor, A. Fert, Unite Mixte de Physique CNRS/Thales and Universite Paris-Sud.\\[4pt]
[1] B. Dlubak et al., Nature Physics 8, 557 (2012); P. Seneor, et al., MRS Bulletin 37, 1245 (2012).\\[0pt]
[2] B. Dlubak et al., ACS Nano 6, 10930 (2012); R. Weatherup, et al., ACS Nano 6, 9996 (2012)
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2014.MAR.D40.1