165 citations · 814 across the 21 of their papers we have counts for
4 papers · 1 filter
Anomalous scaling of spin accumulation in ferromagnetic tunnel devices with silicon and germanium
S. Sharma, A. Spiesser, S. P. Dash +6
The magnitude of spin accumulation created in semiconductors by electrical injection of spin-polarized electrons from a ferromagnetic tunnel contact is investigated, focusing on ho…
Electronic inhomogeneities in graphene: the role of the substrate interaction and chemical doping
A. Castellanos-Gomez, Arramel, M. Wojtaszek +5
We probe the local inhomogeneities of the electronic properties of graphene at the nanoscale using scanning probe microscopy techniques. First, we focus on the study of the electro…
Contact induced spin relaxation in Hanle spin precession measurements
T. Maassen, I. J. Vera-Marun, M. H. D. Guimarães +1
In the field of spintronics the "conductivity mismatch" problem remains an important issue. Here the difference between the resistance of ferromagnetic electrodes and a (high resis…
Spin transport in high quality suspended graphene devices
M. H. D. Guimarães, A. Veligura, P. J. Zomer +4
We measure spin transport in high mobility suspended graphene (μ~ 10^5 cm^2/Vs), obtaining a (spin) diffusion coefficient of 0.1 m^2/s and giving a lower bound on the spin relaxati…