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Electronic properties

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Graphene and carbon nanotubes

We are studying the local electronic properties of graphene and carbon nanotubes when they are doped with nitrogen or functionalized by molecules. The two and one dimensional nature of these materials makes their physical properties very exciting.

a) STM image of carbon nanotubes. b) Spectra of different carbon nanotubes.
a) STM image of carbon nanotubes. b) Spectra of different carbon nanotubes.

Spin polarized spectroscopy of single molecules

We are studying ferromagnetic/organic interfaces which are for interest for spintronics. With the spin polarized scanning tunneling microscope, we can measure the local interaction between a single molecule and a magnetic substrate.

Spin polarized measurement of single C60 molecules on a Cr(001) surface
Spin polarized measurement of single C60 molecules on a Cr(001) surface

Few references

Graphene and carbon nanotubes

- “Localized state and charge transfer in nitrogen-doped graphene”, F. Joucken, Y. Tison, J. Lagoute, J. Dumont, D. Cabosart, B. Zheng, V. Repain, C. Chacon, Y. Girard, A. R. Botello-Méndez, S. Rousset, R. Sporken, J-C. Charlier, L. Henrard, Physical Review B, 85, R161408 (2012).

- “Imaging the symmetry breaking of molecular orbitals in single-wall carbon nanotubes“, H. Lin, J. Lagoute, V. Repain, C. Chacon, Y. Girard, F. Ducastelle, H. Amara, A. Loiseau, P. Hermet, L. Henrard, S. Rousset,
Physical Review B, 81, 235412 (2010).

- “Many-body effects in electronic bandgaps of carbon nanotubes measured by scanning tunnelling spectroscopy", H. Lin, J. Lagoute, V. Repain, C. Chacon, Y. Girard, J.-S. Lauret, F. Ducastelle, A. Loiseau, S. Rousset, Nature Materials, 9, 235 (2010).

Spin polarized spectroscopy of single molecules

- “Large Magnetoresistance through a Single Molecule due to a Spin-Split Hybridized Orbital”,
S. L. Kawahara, J. Lagoute, V. Repain, C. Chacon, Y. Girard, S. Rousset, A. Smogunov, and C. Barreteau, Nano Letters, 12, 4558 (2012).