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Q-NET young researchers

Luca PIETROBON
CIC NanoGUNE, Donostia, San Sebastian, Spain
Male, Italian

Diplomas:
puce Laurea Triennale in Fisica, Universitá degli Studi di Padova (B.Sc. in Physics, University of Padova)
puce M.Sc. in Physics, University of Copenhagen

puce PhD on the University of the Basque country awarded on June 5th, 2015.

Field of research:
Graphene: fabrication of devices, electrical measurements, spin transport

Research experience:
hjg Electrical measurements on microsuspended graphene (Master Student, 12 months), Nanointegration group, Danish Technical University

Thesis Project:
"Spin transport manipulation in graphene."

One of our main objectives is to achieve unprecedented control of spin transport in graphene by atomic or molecular modification of the surface. In a trivial way, the modification of the spin transport properties will occur via the modification of the transport properties, such as carrier concentration or mobility: it is expected that impurity scattering would be an important factor modifying spin relaxation. A second alternative for tuning the spin transport properties in graphene is via the modification of the spin-orbit coupling. A controlled source of spin-orbit interaction on graphene would be very useful and would open new possibilities to carbon spintronics, allowing us even to convert spin currents into electrical voltages and vice versa via spin Hall effect. Nanometer-sized electronic graphene devices are fabricated and tested. Fabrication is essentially performed by electron-beam lithography and metal evaporation on selected graphene flakes. The devices are characterized both from the materials point of view (Raman spectroscopy, AFM) and from the electronic transport side (low-temperature measurements in the presence of a magnetic field).

Publications:
Determination of energy level alignment at metal/molecule interfaces by in-device electrical spectroscopy, M. Gobbi, L. Pietrobon, A. Atxabal, A. Bedoya-Pinto, X. Sun, F. Golmar, R. Llopis, F. Casanova, L. E. Hueso, Nature Communications 5, 4161 (2014).

Gate-Controlled Energy Barrier at a Graphene/Molecular Semiconductor Junction, S. Parui, L. Pietrobon, D. Ciudad, S. Velez, X. Sun, F. Casanova, P. Stoliar, L. E. Hueso, Advanced Functional Materiels 25, 2972-2979 (2015).

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