Geoffroy Prévot
Birth : 09-07-1974
CNRS Senior Researcher at the Paris Institute of Nanoscience
Team web pages
Curriculum Vitae :
Geoffroy Prévot
Birth : 09-07-1974
Education and carrer :
CNRS Senior Researcher at the Institute of Nanoscience of Paris
2007 : Habilitation à diriger des recherches (HDR) « elastic displacements and interactions for periodic nanostructured surfaces ».
1999 : PhD. in Physics, UPMC, “Atomic displacements on copper surfaces : atomic relaxations and vibrations for a (100) vicinal surface, and diffusion mechanisms for Pb on (110) and (100) surfaces”, at the Group of Physics of Solids, supervisor Camille Cohen.
Professional activities :
since 2015 : responsible of the team « Physico-Chemistry and Dynamics of Surfaces »
2013-2019 : responsible of the « Surfaces and Nanostructures » course for SMNO Master II
2009-2013 : Member of the SOLEIL Synchrotron Peer Review Comitee
2008-2012 : Member of the CoNRS (section 5) Member of the « Nanoscience » expert comitee of the Université Denis Diderot (Paris 7)
2004-2007 : Member of the 28e section of the Université Paris Sud (Paris 11)
2003-2004 : Member of the 28e section of the Université Denis Diderot (Paris 7)
Teaching topics
- surface structure
- diffraction techniques
- chemisorption
- surface reactivity
- nucleation and growth mechanisms
Research topics
Highlights
- Imbricated Silicon Pentamers : an original organization for the Si/Ag(110) nanoribbons
- Silicene insersion on silver substrates
- Gold for stabilizing catalysts !
- CO oxidation on platinum vicinal surfaces : mind the step !
- Sixton rectangles in the structure of alumina films on Ni(111)
Methods
Publication List :
2016-2019

- C. Livache, B. Ryan, U. Ramesh, V. Steinmetz, C. Gréboval, A. Chu, T. Brulé, S. Ithurria, G. Prévot, T. Barisien, A. Ouerghi, M. Panthani, E. Lhuillier,
Optoelectronic properties of methyl-terminated germanane
Appl. Phys. Lett. 115 (2019) 052106
DOI : 10.1063/1.5111011
- A. Curcella, R. Bernard, Y. Borensztein, A. Resta, M. Lazzeri, G. Prévot,
Structure and stability of silicene on Ag(111) reconstructions from grazing incidence x-raydiffraction and density functional theory
Phys. Rev. B 97 (2019) 205411
DOI : 10.1103/PhysRevB.99.205411
- A. Wilson, A.Bailly, R. Bernard, Y. Borensztein, A. Coati, B. Croset, H. Cruguel, A. Naitabdi, M. Silly, M.-C. Saint-Lager, A. Vlad, N. Witkowski, Y. Garreau, G. Prévot,
Gas-induced selective re-orientation of Au-Cu nanoparticles on TiO2(110)
Nanoscale 11 (2019) 752
DOI : 10.1039/C8NR07645F
- M. Farronato, I. Bidermane, J. Lüder, M. Bouvet, A. Vlad, A. Jones, J. Simbrunner, R. Resel, B. Brena, G. Prévot, N. Witkowski,
New Quadratic Self-Assembly of Double-Decker Phthalocyanine on Gold(111) Surface : From Macroscopic to Microscopic Scale
J. Phys. Chem. C 122 (2018) 26480
DOI : 10.1021/acs.jpcc.8b08462
- C. Hogan, O. Pulci, P. Gori, F. Bechstedt, D.
S. Martin, E. E. Barritt, A. Curcella, G. Prévot, Y. Borensztein,
Optical properties of silicene, Si/Ag(111), and Si/Ag(110)
Phys. Rev. B (2018) 195407
DOI : 10.1103/PhysRevB.97.195407
- W. Peng, T. Xu, P. Diener, L. Biadala, M. Berthe,X. Pi, Y. Borensztein, A. Curcella, R. Bernard, G. Prévot, B. Grandidier,
Resolving the controversial existence of silicene and germanene nanosheets grown on HOPG
ACS Nano (2018) 4754
DOI : 10.1021/acsnano.8b01467
- A. Curcella, R. Bernard, Y. Borensztein, S. Pandolfi, G. Prévot,
Transition from silicene monolayer to thin Si films on Ag(111) : comparison between experimental data and Monte Carlo simulation
Beilstein J. Nanotechnol. 9 (2018) 48
DOI : 10.3762/bjnano.9.7
- A. Curcella, R. Bernard, Y. Borensztein, M. Lazzeri, G. Prévot,
Mechanism for the stabilization and surfactant properties of epitaxial silicene
Nanoscale 10 (2018) 2291
DOI : 10.1039/C7NR06833F
- A. Curcella, R. Bernard, Y. Borensztein, M. Lazzeri, A. Resta, Y. Garreau, G. Prévot,
Multilayer silicene : clear evidence of Ag-terminated bulk silicon
2D Materials 4 (2017) 025067
DOI : 10.1088/2053-1583/aa65b8
- G. Prévot, C. Hogan, T. Leoni, R. Bernard, E. Moyen, L. Masson,
Si nanoribbons on Ag(110) studied by grazing incidence x-ray diffraction, scanning tunneling microscopy, and density-functional theory : evidence of a pentamer chain structure
Phys. Rev. Lett. 117 (2016) 276102
DOI : 10.1103/PhysRevLett.117.276102
- A. Curcella, R. Bernard, Y. Borensztein, A. Resta, M. Lazzeri, and G. Prévot,
Determining the atomic structure of the (4 x 4) silicene layer on Ag(111) by combined grazing-incidence x-ray diffraction measurements and first-principles calculations
Phys. Rev. B 94 (2016) 165438
DOI : 10.1103/PhysRevB.94.165438
- M. Iachella, A. Wilson, A. Naitabdi, R. Bernard, G. Prévot, D. Loffreda,
Promoter Effect of Hydration on the Nucleation of Nanoparticles : Direct Observation for Gold and Copper on Rutile TiO2 (110)
Nanoscale 8 (2016) 16475
DOI : 10.1039/c6nr02466a
- G. Prévot, N.T. Nguyen, D. Alloyeau, C. Ricolleau, J. Nelayah,
Ostwald-driven phase separation in bimetallic nanoparticle assemblies
ACS Nano 10 (2016) 4127
DOI : 10.1021/acsnano.5b07377
- O. Balmes, G. Prévot, X. Torrelles, E. Lundgren, S. Ferrer,
Diatomic steps in Pt(997) surfaces are better catalysts than monatomic steps for the CO oxidation reaction near atmospheric pressure
ACS Catal. 6 (2016) 1285
DOI : 10.1021/acscatal.5b02526
- F. Leroy, Y. Garreau, F. Cheynis, B. Croset, A. Coati, P. Müller, and G. Prévot,
Elastic cost of silicon step rebonding
Phys. Rev. B 93 (2016) 045416
DOI : 10.1103/PhysRevB.93.045416
- G. Prévot, R. Bernard, H. Cruegel, A. Curcella, M. Lazzeri, T. Leoni, L. Masson, A. Ranguis, Y. Borensztein
Formation of silicene on silver : strong interaction between Ag and Si
Phys. Stat. Solidi B 253 (2016) 206
DOI : 10.1002/pssb.201552524
2012-2015

- Y. Borensztein, A. Curcella, S. Royer and G. Prévot
Silicene multilayers on Ag(111) display a cubic diamondlike structure and a v3×v3 reconstruction induced by surfactant Ag atoms
Phys. Rev. B 92 (2015) 155407
DOI : 10.1103/PhysRevB.92.15540
- R. Bernard, Y. Borensztein, H. Cruguel, M. Lazzeri, and G. Prévot
Growth mechanism of silicene on Ag(111) determined by scanning tunneling microscopy measurements and ab initio calculations
Phys. Rev. B 92, 045415 (2015)
DOI : 10.1103/PhysRevB.92.045415
- A. Wilson, R. Bernard, Y. Borensztein, B. Croset, H. Cruguel, A. Vlad, A. Coati, Y. Garreau, G. Prévot
Critical Au Concentration for the Stabilization of Au-Cu Nanoparticles on Rutile against Dissociation under Oxygen
J. Phys. Chem. Lett. 6, 2050 (2015)
DOI : 10.1021/acs.jpclett.5b00791
- T. Leoni, R. Bernard, A. Ranguis, Y. Borensztein, G. Prévot, L. Masson
Si Ultrathin Films on Silver Surfaces : An Intriguing Epitaxial System
ECS Transactions 64, 89 (2014)
DOI : 10.1149/06406.0089ecst
- G. Prévot, R. Bernard, H. Cruguel, Y. Borensztein
Monitoring Si growth on Ag(111) with scanning tunneling microscopy reveals that silicene structure involves silver atoms
Appl. Phys. Lett. 105, 213106 (2014)
DOI : 10.1063/1.4902811
- A. Wilson, R. Bernard, A. Vlad, Y. Borensztein, A. Coati, B. Croset, Y. Garreau, G. Prévot,
Epitaxial growth of bimetallic Au-Cu nanoparticles on TiO2(110) followed in situ by scanning tunneling microscopy and grazing-incidence x-ray diffraction
Phys. Rev. B 90, 075416 (2014)
DOI : 10.1103/PhysRevB.90.075416
- Y. Borensztein, G. Prévot, L. Masson,
Large differences in the optical properties of a single layer of Si on Ag(110) compared to silicene
Phys. Rev. B 89, 245410 (2014)
DOI : 10.1103/PhysRevB.89.245410
- O. Balmes, G. Prévot, X. Torrelles, E. Lundgren, S. Ferrer,
Generation of surface steps on Pt(977) induced by the catalytic oxidation of CO
J. Catal. 309, 33 (2014).
DOI : 10.1016/j.jcat.2013.09.001
- R. Bernard, T. Leoni, A. Wilson, T. Lelaidier, H. Sahaf, E. Moyen, L. Assaud, L. Santinacci, F. Leroy, F. Cheynis, A. Ranguis, H. Jamgotchian, C. Becker, Y. Borensztein, M. Hanbücken, G. Prévot, L. Masson,
Growth of Si ultrathin films on silver surfaces : Evidence of an Ag(110) reconstruction induced by Si
Phys. Rev. B 88, 121411(R) (2013).
DOI : 10.1103/PhysRevB.88.121411
- G. Prévot, S. Le Moal, R. Bernard, B. Croset, R. Lazzari, D. Schmaus
Archetypal structure of ultrathin alumina films : Grazing-incidence x-ray diffraction on Ni(111)
Phys. Rev. B 85, 205450 (2012).
DOI : 10.1103/PhysRevB.85.205450
- G. Prévot, F. Leroy, B. Croset, Y. Garreau, A. Coati, P. Müller
Step-induced elastic relaxation and surface structure of the Si(7710) surface,
Surf. Sci. 606, 209 (2012).
DOI : 10.1016/j.susc.2011.09.019
2008-2011

- G. Prévot, Ostwald ripening of 3d clusters on a surface studied with an ultra-fast kinetic Monte-Carlo algorithm,
Phys. Rev. B 84, 045434 (2011).
DOI : 10.1103/PhysRevB.84.045434
- G. Prévot, Direct Observation of Elastic Displacement Modes by Grazing-Incidence X-Ray Diffraction in Mechanical Stress on the Nanoscale, M. Hanbuecken, P. Mueller, R.B. Wehrspohn ed., WILEY-VCH, Weinheim p. 275 (2011).
- D. Alloyeau, G. Prévot, Y. Le Bouar, T. Oikawa, C. Langlois, A. Loiseau, C. Ricolleau, Ostwald ripening in nanoalloys : when thermodynamics drives a size-dependent particle composition,
Phys. Rev. Lett. 105, 255901 (2010).
DOI : 10.1103/PhysRevLett.105.255901
- G. Prévot, L. Barbier, P. Steadman, Step interactions on Pt(111) vicinal surfaces determined by grazing incidence x-ray diffraction : influence of the step orientation,
Surf. Sci. 604, 1265 (2010).
DOI : 10.1016/j.susc.2010.04.012
- G. Prévot, Y. Girard, V. Repain, S. Rousset, A. Coati,Y. Garreau, J. Paul, N. Mammen, S. Narasimhan, Elastic displacements and step interactions on metallic surfaces : GIXD and ab initio study of Au(332),
Phys. Rev. B 81, 075415 (2010).
DOI : 10.1103/PhysRevB.81.075415
- G. Prévot, S. LeMoal, D. Schmaus, Epitaxial alloyed films out of the bulk stability domain :
surface structure and composition of Ni3Al and NiAl films on a stepped Ni(111) surface,
Surf. Sci. 604, 770 (2010).
DOI : 10.1016/j.susc.2010.01.025
- G. Prévot, A. Naitabdi, R. Bernard, Y. Borensztein, Sixton-rectangles in the structure of alumina ultra-thin films on metals,
Phys. Rev. B 81, 085405 (2010).
DOI : 10.1103/PhysRevB.81.085405
- G. Prévot, B. Croset, Equilibrium configurations of two-dimensional stressed domains on the surface of isotropic and cubic crystals,
Surf. Rev. Lett. 16, 545 (2009).
DOI : 10.1142/S0218625X09012925
2004-2007

- G. Prévot, B. Croset, A. Coati, Y. Garreau, Direct observation of elastic displacement modes by grazing incidence X-ray diffraction,
J. Appl. Cryst. 40, 874 (2007).
DOI : 10.1107/S0021889807034115
- B. Croset, H. Guesmi, G. Prévot, Role of anisotropies on the self organization of stressed domains on (001) surfaces of cubic crystals,
Phys. Rev. B 76, 073405 (2007).
DOI : 10.1103/PhysRevB.76.073405
- G. Prévot, H. Guesmi, B. Croset, Ordered growth of nanodots on a pre-structured metallic template : Au/N/Cu(001),
Surf. Sci. 601, 2017 (2007).
DOI : 10.1016/j.susc.2007.02.033
- G. Prévot, B. Croset, Elastic relaxations and interactions on metallic vicinal surfaces : testing the dipole model,
Phys. Rev. B 74, 235410 (2006).
DOI : 10.1103/PhysRevB.74.235410
- G. Prévot, B. Croset, A. Coati, Y. Garreau, Y. Girard, Self-organized systems for measuring surface stress at the nanoscale : N and O adsorption on Cu(001),
Phys. Rev. B 73, 205418 (2006).
- B. Croset, G. Prévot, Elastic relaxations and interactions for vicinal and self-organized surfaces : Role of crystalline anisotropy,
Phys. Rev. B 73, 045434 (2006).
DOI : 10.1103/PhysRevB.73.045434
- S. Rousset, B. Croset, Y. Girard, G. Prévot, V. Repain, S. Rohart, Self-organized epitaxial growth on spontaneously nano-patterned templates,
C. R. Physique 6, 33 (2005).
- G. Prévot, A. Coati, Y. Garreau, GIXD measurement of the relaxations and elastic step interactions on Cu(211) and Cu(322),
Phys. Rev. B 70, 205406 (2004).
- G. Prévot, B. Croset, Revisiting elastic interactions between steps on vicinal surfaces : The buried dipole model,
Phys. Rev. Lett. 92, 256104 (2004).
- G. Prévot, B. Croset, Y. Girard, A. Coati, Y. Garreau, M. Hohage, L.D. Sun, P. Zeppenfeld,
Elastic origin of the O/Cu(110) self-ordering evidenced by GIXD,
Surf. Sci. 549, 52 (2004).
2000-2003

- G. Prévot, P. Steadman, S. Ferrer, Determination of the elastic dipole at the atomic steps of Pt(977) from surface x-ray diffraction,
Phys. Rev. B 67, 245409 (2003).
- G. Prévot, B. Croset, Self-organisation of chemisorbed systems : elastic origin and kinetic factors,
Thin Solid Films 428, 25 (2003).
- B. Croset, Y. Girard, G. Prévot, M. Sotto, Y. Garreau, R. Pinchaux, M. Sauvage-Simkin,
Measuring surface stress discontinuities in self-organized systems with X-rays,
Phys. Rev. Lett. 88, 056103 (2002).
- G. Prévot, C.R. Henry, Micro-Kinetic Modeling of the CO+NO Reaction on Pd/MgO Particles,
J. Phys. Chem. B 106, 12191 (2002).
- G. Prévot, O. Meerson, L. Piccolo, C.R. Henry, Reactivity of supported metal clusters : The reduction of NO by CO on a Pd/MgO catalyst,
J. Phys. Condens. Matter 14, 4251 (2002).
- G. Prévot, C. Cohen, D. Schmaus, P. Hecquet, B. Salanon, Temperature dependence of the atomic relaxations and vibrations on a stepped surface : a molecular dynamics study of Cu(1,1,19),
Surf. Sci. 506, 272 (2002).
- C. Cohen, H. Ellmer, J.-M. Guigner, A. L’Hoir, G. Prévot, D. Schmaus, M. Sotto, Surface relaxation and near surface atomic displacements in the N/Cu(100) self-ordered system,
Surf. Sci. 490, 336 (2001).
- C. Cohen, G. Prévot, D. Schmaus, Metal heterodiffusion on metallic surfaces : case of Pb on Cu, in M.C. Tringides and Z. Chvoj (eds), Collective Diffusion on Surfaces : Correlation Effects and Adatom Interactions, p. 107, Kluwer Academic Publishers 2001.
- G. Prévot, C. Cohen, D. Schmaus, V. Pontikis, Non-isotropic surface diffusion of Pb on Cu(110) : a molecular dynamics study,
Surf. Sci. 459, 57 (2000).
- G. Prévot, C. Cohen, J.-M. Guigner, D. Schmaus, Macroscopic and mesoscopic surface diffusion from a deposit formed by a Stranski-Krastanov type of growth : Pb on Cu(100) at above one layer coverage,
Phys. Rev. B. 61, 10393 (2000).
- M. Morjean, M. Chevallier, C. Cohen, D. Dauvergne, J. Dural, J. Galin, F. Goldenbaum, D. Jacquet, R. Kirsch, E. Lienard, B. Lott, A. Peghaire, Y. Perier, J.C. Poizat, G. Prevot, J. Remillieux, D. Schmaus, M. Toulemonde, Investigation of fission time distributions by the blocking technique in single crystals, Proceedings of the IVth international conference on dynamical aspects of nuclear fission, Casta-Papiernika, Slovaquie, Ed. World Scientific, p. 254, (2000).
before 2000

- M. Morjean, M. Chevallier, C. Cohen, D. Dauvergne, J. Dural, J. Galin, D. Jacquet, R. Kirsch, E. Lienard, B. Lott, A. Peghaire, Y. Perier, J.C. Poizat, G. Prevot, J. Remillieux, D. Schmaus, M. Toulemonde, Evolution of fission life time with temperature : a straightforward measurement by the blocking technique, Proceedings of the Tours Symposium on Nuclear Physics, American Institute of Physics, p. 134 (1997).
- M. Morjean, M. Chevallier, C. Cohen, D. Dauvergne, J. Dural, J. Galin, F. Goldenbaum, D. Jacquet, R. Kirsch, E. Lienard, B. Lott, A. Peghaire, Y. Perier, J.C. Poizat, G. Prevot, J. Remillieux, D. Schmaus, M. Toulemonde, A direct determination of fission lifetimes as a function of excitation energy by the blocking technique, 6th International School Seminar on Heavy Ion Physics, Dubna, Ed World Scientific : Heavy Ion Physics, p. 683 (1998).
- F. Goldenbaum, M. Morjean, J. Galin, E. Liénard, B. Lott, Y. Périer, M. Chevallier, D. Dauvergne, R. Kirsch, A. Peghaire, J.C. Poizat, J. Remilleux, C. Cohen, A. L’Hoir, G. Prévot, D. Schmaus, J. Dural, M. Toulemonde, D. Jacquet, Fission time evolution with excitation energy from a crystal blocking experiment,
Phys. Rev. Lett. 82, 5012 (1999).
- G. Prévot, C. Cohen, J. Moulin, D. Schmaus, Surface diffusion of Pb on Cu(110) at low coverage : competition between exchange and jump,
Surf. Sci. 421, 364 (1999).
- M. Morjean, M. Chevallier, C. Cohen, D. Dauvergne, J. Dural, J. Galin, F. Goldenbaum, D. Jacquet, R. Kirsch, E. Liénard, B. Lott, A. Peghaire, Y. Périer, J.C. Poizat, G. Prévot, J. Remilleux, D. Schmaus, M. Toulemonde, Fission lifetime measured by the blocking technique as a function of excitation energy in the 24 A.MeV 238+U+28Si reaction,
Nucl. Phys.A 630, 200 (1998).