sylvain petit

Sylvain PETIT

LLB-Nouvelles frontières dans les matériaux quantiques

+33 1 69 08 60 39/ 62 29
+33 1 69 08 82 61

Activity

Researcher in solid state physics, specialist in inelastic neutron scattering experiments
Head of the “New frontiers in quantum materials - NFMQ” team.

Research Topics

Magnetism of insulators, Thin films, CMR manganites, Multiferroics, Spin-phonon coupling and Magneto-elastic coupling, Frustrated magnets,
Low dimensional magnetism, Phase transitions, Liquid spin states, Quantum spin-ice

CV

2021 -	Member of the "Objet Interdisciplinaire Matériaux” committee of the Physics Graduate School, Université Paris-Saclay, France
2019 -	Senior expert CEA - LLB/NFMQ team leader (20 persons)
2018 -	Member of the SHARP CRG (TOF spectrometer at ILL),Grenoble,France
2015-2019	Member of the Labex PALM Theme 1: “Correlated matter” committee, Université Paris-Saclay, France
2014-2019	Member of the “platforms” committee of the PHOM department, Université Paris-Saclay, France
2008-2019	Responsible for the triple-axis spectrometer 4F1 at Orphée-LLB reactor, LLB, France
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".
1997	PhD in Solid State Physics at the university Paris Sud : "Etude des excitations magnétiques dans le supraconducteur à haute température critique La_2-xSr_xCuO₄ par diffusion inelastique des neutrons" / “Spin dynamics in high Tc superconductor La_2-xSr_xCuO₄”.
1994	Master in Solid State Physics
1994	SUPELEC engineer

Thesis supervision / co-supervision

Antoine Vaunat (2021) : "Nouvelle frustration hybride dans les matériaux fortement corrélés : l'électromagnon"
Mélanie Léger (2021) : "Fragmentation quantique dans les systèmes magnétiques frustrés"
Tom Ferté (2017) : "Dynamique ultrarapide de l'aimantation dans les alliages de métaux de transitions et de terres rares"
Solène Guitteny (2015) : "Etude de systèmes frustrés par diffusion neutronique : Pr₂Zr₂O₇ et Tb₂Ti₂O₇ sont-ils des glaces de spin quantiques ?"
Monica Hatnean (2012) : "Synthèse et étude de composés Ga₂₋ₓFeₓO₃"
Xavier Fabrèges (2010) : "Etude des propriétés magnétiques et du couplage spin/réseau dans les composés multiferroïques RMnO3 hexagonaux par diffusion de neutrons"

Scientific Publications

ORCID id : 0000-0002-2169-0544
Archive ouverte - HAL (> 2009):

Before 2009 :

“Thin films”:

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)
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 S. Fusil, C. Deranlot, K. Bouzehouane, and A. Barthélémy, 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)

“Manganites with giant magneto-resistance":

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)
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 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)

"Multiferroics":

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)
Spin-lattice coupling, frustration, and magnetic order in multiferroic RMnO₃
X. Fabrèges, S. Petit, I. Mirebeau, S. Pailhès, L. Pinsard, A. Forget, M. T. Fernandez-Diaz, and F. Porcher, Phys. Rev. Lett. 103 067204 (2009)
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)
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)
Spin phonon coupling in hexagonal multiferroic YMnO₃
S. Petit, F. Moussa, M. Hennion, S. Pailhès, L. Pinsard-Gaudart and A. Ivanov., Phys. Rev. Lett. 99, 266604 (2007)

"1-D systems":

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)

“Supraconductivity” (PhD):

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, 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)
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)

Teaching activities

Lectures on spin waves theory: JDN16, JDN18 and JDN22
Summer schools of the Société française de la neutronique, MDANSE: “Molecular dynamics and lattice dynamics to analyse neutron scattering experiments”(Tenerife, Spain 2018),
EPFL-ETHZ Summer School on quantum matter (Lausanne, Switzerland 2019),
Neutron scattering techniques: European school of magnetism (Targoviste, Roumania 2011), Swedness summerschool (Tartu, Estonia 2017), University Paris 6 (2014-2018) and Bordeaux-I University (2008-2019).

Reviewing activities

Since 2019: Member of the scientific advisory board of the LNCMI (Laboratoire National des Champs Magné-tiques Intenses),Grenoble, France
Since 2019: Reviewer for Swiss national foundation (SNF), Switzerland
Since 2015: Reviewer for the Agence Nationale de la Recherche Scientifique (ANR), France 2008-2013
Reviewer for the ILL neutron facility, College 4,Grenoble,France
Since 2008: Reviewer for the NIST neutron facility ,USA
Since 2008: Reviewer for the LLB-Orphée french neutron facility (today 2FDN), Saclay, France
Since 2008: Reviewer for PRL and Nature Physics.

Membership of Scientific Societies

Since 2008 Member of the scientific society “Société Française de neutronique”
Since 2011: Member of the CNRS Research Networks “GDR MICO” and “GDR MEETICC” (member of the scientific council)