In this project we propose to perform a series of studies aimed at understanding and controlling the injection of pure spin currents in graphene-based spintronics devices through dynamical spin pumping and the spin-Hall effect. The proposed devices make use of the unique properties of graphene to allow for the generation and manipulation of pure spin currents, which will be employed to control the magnetic state of the device to an extent not possible with spin valves that use non-gateable spacers to separate the FM layers.
Recent Reference of this topic:
S. Singh, A. Ahmadi, C.T. Cherian, E. R. Mucciolo, E. del Barco, and B. Özyilmaz
“Dynamical spin injection at a quasi-one-dimensional ferromagnet-graphene interface”
Appl. Phys. Lett. 106, 032411 (2015)
S. Singh, Ph-D Thesis, UCF (2014).
S. Singh, D. Markó, E. del Barco and B. Özyilmaz.
“Spin pumping at Permalloy/graphene interface”
SPIE 8813, 88132O-1 (2013)
S. Singh, A. K. Patra, B. Barin (UG), E. del Barco and B. Ozyilmaz.
“Spin Pumping in Permalloy/Graphene and Permalloy/Graphite Interfaces”
IEEE Trans. Magn., 49, 3147 (2013).
A. K. Patra, S. Singh, B. Barin (UG), Y. Lee, J.-H. Ahn, E. del Barco, E. R. Mucciolo, and B. Ozyilmaz.
“Dynamic spin injection into chemical vapor deposited graphene”
Appl. Phys. Lett. 101, 162407 (2012).