Graphene, an ideal material for spintronics
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Graphene, an ideal material for spintronics
CIC nanoGUNE Seminars
- Speaker
-
Ivan Vera-Marun, University of Gronigen
- When
-
2013/04/29
13:00
- Place
- nanoGUNE seminar room, Tolosa Hiribidea 76, Donostia - San Sebastian
- Add to calendar
-
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**Host** :Felix Casanova
New materials and devices with enhanced spin functionality open the door
for faster, energy-efficient and reconfigurable electronics. Graphene, a
one-atom-thick layer of carbon, has risen as an attractive system with
the potential to realize this vision. Therefore it is crucial to
understand the mechanisms currently limiting spin transport in graphene
and to develop new device architectures that take advantage of its
excellent transport properties. Here we present recent results
addressing these questions. We have taken steps towards exploring the
intrinsic spintronic properties by fabricating high quality spintronic
devices featuring suspended graphene bridges which do not interact with
the substrate. Alternatively, we modify graphene by placing hydrogen
adsorbates leading to the observation of an enhanced spin lifetime, and
gauge the role of magnetic contacts on the spin relaxation. Finally, we
explore novel energy-dependent phenomena that result in a nonlinear
interplay between charge and spin currents. This interplay is exploited
for detecting spin currents even with nonmagnetic contacts, allowing new
device architectures generally applicable to the field of semiconductor
spintronics.