Sylvain Petit
Laboratoire Léon Brillouin, CE-Saclay 91191 Gif sur Yvette Cedex
+33 1 69 08 60 39
+33 1 69 08 82 61
sylvain.petit@cea.fr
Activity
Researcher, specialist in inelastic neutron scattering experiments
Member of the “triple-axis” group
Co-responsible for the cold (polarized) triple axis spectrometer (4F1)
Research Topics
Thin films, CMR manganites, Multiferroics, spin-phonon coupling, Frustrated magnets,
Low dimensional magnetism
CV
Since 2006 : researcher at LLB
1998-2006 : researcher at the Centre d’Etudes de Bruyères-le-Chatel (CEA) : neutron and charged
particles transport in fusion plasmas, transport in heterogeneous media and turbulent mixing
1998 : PhD in Solid State Physics at the university Paris Sud, “Spin dynamics in high Tc
superconductor La2-xSrxCuO4”
1994 : Master in Solid State Physics
1994 : SUPELEC engineer
Encadrements de Thèse
Xavier Fabrèges (en cours : 2007-2010), Monica Hatnean (en cours : 2010-2012)
Scientific Publications
Activité “Couches minces”
Structural distortion and magnetism of BiFeO3 epitaxial thin films : a Raman spectroscopy
and neutron diffraction study
H. Béa, M. Bibes, S. Petit, J. Kreisel, A. Barthelemy, Philos. Mag. Lett., 87, 165 (2007)
Mechanisms of exchange bias with multiferroic BiFeO3 epitaxial thin films
H. Béa, M. Bibes, F. Ott, B. Dupé, X.-H. Zhu, S. Petit et al, Phys. Rev. Lett. 100, 017204
(2008)
Neutron diffraction study of hexagonal manganite YMnO3, HoMnO3 and ErMnO3 epitaxial
films
I. Gélard, C. Dubourdieu, S. Pailhès, S. Petit, and Ch. Simon, App. Phys Lett. 92, 1 (2008)
A room-temperature multiferroic with giant tetragonality
H. Béa, B. Dupé, S. Fusil, R. Mattana, E. Jacquet, B. Warot-Fonrose, F. Wilhelm, A.
Rogalev, S. Petit, V. Cros, A. Anane, F. Petroff, K. Bouzehouane, G. Geneste, B. Dkhil, S.
Lisenkov, L. Bellaiche, M. Bibes and A. Barthélémy, Phys. Rev. Lett. 102, 217603 (2009)
Activité “Manganites à magnéto-résistance géante »
Spin waves in ferromagnetic manganites
F. Moussa, M. Hennion, P. Kober-Lehouelleur, D. Reznik, S. Petit, H. Moudden, A. Ivanov,
Y. Mukovskii, R. Privezentsev, and F. Albenque-Rullier, Phys. Rev. B 76, 064403 (2007)
Intralayer and interlayer exchange tuned by magnetic field in the bilayer manganite
(La 0.4Pr0.6 )1.2Sr1.8Mn2O7 probed by inelastic neutron scattering
F. Moussa, M. Hennion, A. Gukasov, S. Petit, L. P. Regnault, A. Ivanov, R. Suryanarayanan,
M. Apostu, and A. Revcolevschi, Phys. Rev. B 78, 060406 (2008)
Spin waves and metallic state of magnetoresistive manganites
S. Petit, M. Hennion, F. Moussa, D. Lamago, A. Ivanov and Y.Mukovskii
J. Phys. Conf. Ser. 200 (2010) 012159
Quantized spin waves in the metallic state of magnetoresistive manganites
S. Petit, M. Hennion, F. Moussa, D. Lamago, A. Ivanov, Y. M. Mukovskii4, D. Shulyatev,
Phys. Rev. Lett. 102, 207201 (2009)
Activité « multiferroiques »
Spin phonon coupling in hexagonal multiferroic YMnO3
S. Petit, F. Moussa, M. Hennion, S. Pailhès, L. Pinsard-Gaudart, et al., Phys. Rev. Lett. 99,
266604 (2007)
Magnetic order in YbMnO3 studied by neutron diffraction and Mössbauer spectroscopy
X. Fabrèges, I. Mirebeau, P. Bonville, S. Petit, G. Lebras-Jasmin, A. Forget, G. André, and S.
Pailhès, Phys. Rev. B 78, 214422 (2008)
Hybrid Goldstone modes in multiferroics
S. Pailhès, X. Fabrèges1, L. P. Régnault, L. Pinsard-Godart, I. Mirebeau, F. Moussa, M.
Hennion, and S. Petit, Phys. Rev. B 79, 134409 (2009)
Spin-Lattice Coupling, Frustration, and Magnetic Order in Multiferroic RMnO3
X. Fabrèges, S. Petit, I. Mirebeau et al, Phys. Rev. Lett. 103 067204 (2009)
Spin dynamics in the geometrically frustrated multiferroic CuCrO2
M. Poienar, F. Damay, C. Martin, J. Robert et S. Petit, Phys. Rev. B 81, 104411, (2010)
Activité « Systèmes 1D »
Inelastic neutron scattering investigation of magnetic excitations in the spin-Peierls ground
state of (TMTTF)2PF6
Pascale Foury-Leylekian, Sylvain Petit, Claude Coulon, Bernard Hennion, Alec Moradpour,
Jean-Paul Pouget, Physica B 404 (2009) 537–540
Incommensurate spin correlation driven by frustration in BiCu2PO6
O. Mentré, E. Janod, P. Rabu, M. Hennion, F. Leclercq-Hugeux, J. Kang,C. Lee, M.-H.
Whangbo, and S. Petit, Phys. Rev. B, 80,180413R (2009)
Activité “Supraconductivité” (PhD)
Hole dynamics in doped cuprates : high Tc superconductivity originated from
antiferromagnetics exchange as a direct attractive interaction
F. Onufrieva, S. Petit, Y. Sidis, Phys. Rev. B 54 (12464), (1996)
Hole doped cuprates : from small to large Fermi surface
F. Onufrieva, S. Petit, Y. Sidis, Physica C, 226, 11, (1996)
Key feature for high Tc superconductivity antiferromagnetic exchange as attractive
interaction, combined with saddle point singularities close to Fermi level
F. Onufrieva, S. Petit, Y. Sidis, J. Low. Temp. Phys, 105, 597, (1996)
Spin dynamic study of LaSrCuO4 by inelastic neutron scattering
S. Petit, H. Moudden, B Hennion, A. Vietkin and A Revcholevschi
Physica B, 234 236, 800-802, (1997)
Neutron study of the spin dynamics in superconducting LaSrCuO4
S. Petit, H. Moudden, B Hennion, A. Vietkin and A. Revcholevschi
Physica C, volume 282, p.1375-1376, (1997)
New slow and short range magnetic correlations in superconducting LaSrCuO4
S. Petit, H. Moudden, B Hennion, A. Vietkin and A. Revcholevschi
Eur. Phys. J. B, 3,163-167 (1997)