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Fonctions
Chercheur
Assistant du Directeur de l’IRAMIS – Institut Rayonnement-Matière,
- Communication scientifique interne/externe
- Formations doctorales
Activité scientifique
- Physique statistique et systèmes complexes
- Émission de photons de jonctions tunnel en microscopie STM.
- Surfaces de quasicristaux :
- Surfaces de métaux, alliages, semi-conducteurs
- Morphologie de surface – Transition rugueuse
- Collisions atomiques
- Physique atomique et moléculaire
- Spectroscopie – états de Rydberg
Thèmes de recherche : Physique du solide, Physique statistique, Physique atomique et moléculaire.
Techniques expérimentales : Analyse statistique, Microscopie à effet tunnel (STM), Diffraction d’hélium, Diffraction de rayons X, LEEM, laser.
CV
2014-2023 : Assistant au Directeur de l’IRAMIS pour la formation doctorale à l’IRAMIS.
2008 – : Assistant Communication scientifique du Chef du Département de recherche DRECAM, aujourd’hui Institut IRAMIS.
2005 : Fracture des matériaux
2001 : Surface de quasicristaux. Étude par diffraction d’hélium et STM.
WEBmaster du DRECAM
1994 : Études couplées synchrotron (ESRF Grenoble) et STM .
1991 : Étude de surfaces de monocristaux par microscopie à effet tunnel (STM). physique statistique
Rédacteur du journal « Brèves du DRECAM »
1988 : Équipe Physique des surfaces, Jean Lapujoulade. Dispositif expérimental RAMSES (Rétrodiffusion d’Atomes et Molécules sur les Surfaces)
1984 : CEA Saclay Service de Physique des Atomes et des Surfaces (DRF/DPhG/SPAS -CEA Saclay)
1984 : Thèse d’état : « Ionisation collisionnelle d’atomes de rubidium très excités à énergie thermique«
Université Paris Sud-Orsay, Service de Physique des Atomes et des Surfaces (DRF/DPhG/SPAS) – CEA Saclay
1979 : Thèse 3ème cycle : « Étude des niveaux de Rydberg de la série 4f146snd de l’ytterbium. Mesure des champs critiques d’ionisation. Analyse expérimentale et théorique des structures hyperfines. » Université Paris Sud – Orsay, Laboratoire Aimé Cotton, CNRS, Université d’Orsay.
1977 : DEA Physique Atomique et Moléculaire – Optique Quantique (PAMOQ) – Université Paris-Sud – École Polytechnique.
1976-77 : Maitrise de physique, Université Paris-Sud Orsay.
Publications scientifiques
Publications dans la base HAL – Open access
61 – Un projet phare pour filmer les électrons
L. Barbier et F. Quéré, La Recherche 525-526 (2017) 42.
60 – Nominally brittle cracks in inhomogeneous solids: From microstructural disorder to continuum-level scale
J. Barés, M. Barlet, C.L. Rountree L. Barbier and D. Bonamy, Front. Phys. (2014) 2:70.
59 – Crackling versus continuum like dynamics in brittle failure
J. Barés, L. Barbier, and D. Bonamy, Phys. Rev. Lett. 111 (2013) 054301.
58 – Step interactions on Pt(111) vicinal surfaces determined by grazing incidence x-ray diffraction: influence of the step orientation,
G. Prévot, L. Barbier and P. Steadman, Surface Science, 604(15–16) (2010) 1265.
57 – Scaling and universality in the kinetic smoothening of interfaces: Application to the analysis of the relaxation of rough vicinal steps of an oxide surface,
T.T.T. Nguyen, D. Bonamy, L. Phan Van, J. Cousty, and L. Barbier, EPL, 89 (2010) 60005.
56- Reply to “Comment on `Cleaved surface of i-AlPdMn quasicrystals: Influence of the local temperature elevation at the crack tip on the fracture surface roughness‘ ”
L. Barbier, D. Bonamy, and L. Ponson, Phys. Rev. B 78 (2008) 216202
55 – Coarsening of two-dimensional Al2O3 islands on vicinal (1-102) sapphire surfaces
T-T-Thuy. Nguyen, D. Bonamy, L. Pham Van, L. Barbier, J. Cousty, Surface science 602(21) (2008) 3232
54- Cleaved surface of i-AlPdMn quasicrystals: Influence of the local temperature elevation at the crack tip on the fracture surface roughness
L. Ponson, D. Bonamy, L. Barbier, Phys. Rev. B 74 (2006) 184205
53- Characterization of antiphase boundary network in Fe3O4(111) epitaxial thin films: Effect on anomalous magnetic behaviour
A. M. Bataille, L. Ponson, S. Gota, L. Barbier, D. Bonamy, and M. Gautier-Soyer, Phys. Rev. B 74 (2006) 155438
52– Contribution to a discussion on clusters, phasons and quasicrystal stabilization,
Prodeeding of the 9th International Conference on Quasicrystals (ICQ9),
edited by C. L. Henley, M. de Boissieu, W. Steurer, Phil. Mag. 86/6-8 (2006) 1131
51– Periodic magnetic anisotropy in ultrathin ferromagnetic films on faceted surfaces
A. Tejeda, G. Baudot, V. Repain, S. Rousset, J. Ferré, J.P. Jamet, A. Thiaville and L. Barbier, Europhys. Lett., 71 (1) (2005) 117-123
50– Steps and terraces at quasicrystal surfaces. Application to the analysis of STM images of i-AlPdMn,
L. Barbier et D. Gratias, http://arxiv.org/abs/cond-mat/0505452.
49- Crystallographic structure and morphology of cobalt films on Cu(1 1 11),
A. Chaumin-Midoir, H. Magnan, L. Barbier, P. Le Fèvre and D. Chandesris, Surface Science 562 (2004) 137-149.
48- Influence of Au (111) reconstruction on light emission induced by STM,
K. Perronet, L. Barbier and F. Charra, Phys. Rev. B 70 (2004) 201405(R).
47- High Resolution STM studies of quasicrystal surfaces: an efficient tool to investigate quasiperiodic atomic structures.
L. Barbier et D. Gratias, Progress in Surface Science, 75 (2004) 177-189.
45- Surface EXAFS studies of metastable magnetic thin films and nanostructures,
D. Chandesris, P. Le Fèvre, H. Magnan, A. Chaumin-Midoir, H. Jaffrès, F. Scheurer and L. Barbier, J Phys-Condens Mat 15 (5) (2003) S657.
Proceedings of the Wandlitz workshop « Bab2002 », Berlin Juin 2002.
44- Time-space height correlations of thermally fluctuating 2-d systems. Application to vicinal surfaces and analysis of STM images of Cu(115),
L. Barbier, E. Le Goff and B. Salanon, Surface Science 531(3) (2003) 337.
cond-mat/0306642
43- Thermal roughening restrained by bulk chemical order: Cu-Pd(17%) versus Cu(115) and Cu3Au (1 1 12) vicinal surface.
E. Le Goff, L. Barbier, Y. Garreau and M. Sauvage, Surface Science 522 (2003) 143.
42- Magnetism, structure and morphology of thin cobalt films deposited on Cu(115),
A. Chaumin Midoir, H. Magnan, F. Scheurer, H. Bulou, L. Barbier, P. Le Fèvre and D. Chandesris,
Proceedings of ECOSS- 21 Juin 2002 Malmö, Sweden, Surface Science 532 (2003) 70.
41- Correlation between STM-induced photon emission and barrier height: The case of the Cu3Au alloy vicinal surface,
F. Silly, F. Charra, L. Barbier and E. Le Goff, Europhys. Lett. 64 (2003) p. 475.
40- Chemical order driven morphology of a vicinal surface of Fe3Al (111): An He diffraction and STM study,
L. Piccolo and L. Barbier, Surface Science 505 (2002) 271.
39- L. Barbier, D. Le Floch, Y. Calvayrac and D. Gratias,
Identification of the atomic structure of the 5-fold surface of icosahedral Al-Pd-Mn quasicrystal: Helium diffraction and STM studies,
Phys. Rev. Lett. 88 (2002) 85506.
38- Chaumin Midoir, H. Magnan, L. Barbier, P. Le Fèvre and D. Chandesris,
Structure and morphology of thin cobalt films deposited on vicinal surface Cu(1 1 11),
EMRS Strasbourg Juin 2001, Applied Surface Science 188 (1-2) (2002) 115.
37- Structure of vicinal surfaces of alloys: Cu-Pd(17%) (115),
E. Le Goff, I. Arfaoui, L. Barbier, A. Loiseau and B. Salanon, Surface Science 481 (2001) 215.
Direction de thèse de Eric Le Goff soutenue le 29 Octobre 1999 (Univ. Paris XI Orsay) :
Manuscrit de la thèse
36- Chemical ordering of alloy surfaces. Low index versus vicinal surfaces,
E. Le Goff, D. Le Floc’h, L. Barbier, S. Goapper, A. Loiseau and B. Salanon, Physical Review B, 63, 125418A (2001).
35- Step pairing and bulk chemical order at alloy vicinal surfaces,
E. Le Goff, L. Barbier, S. Goapper and B. Salanon, Surface Science, 466 (1-3) (2000) pp. 73-88.
34- The phase diagram of the lattice Calogero Sutherland model,
E. Le Goff, L. Barbier and B. Salanon, Cond Mat 0012253Rapid Communication Phys. Rev. B 61, 10594 (2000).
33- The morphology and thermodynamics of solid surfaces,
B. Salanon, L. Barbier, P. Hecquet et E. Le Goff,
In Quasicrystals – current topics (Proceedings of the Advanced School on Quasicrystals Aussois, France 16-21 May 1999), Ed : E. Belin-Ferré, C. Berger, M. Quiquandon and A. Sadoc. World Scientific (Singapore) 2000.
32- Vicinal surfaces: Free energy, terrace width distribution and step correlation function,
E. Le Goff, L. Barbier, L. Masson and B. Salanon, Surface Science 432 (1999) 139.
31- Step pairing induced by surface alloying: Pd/Cu(1,1,11),
S. Goapper, L. Barbier and B. Salanon, Surface Science 409 (1998) 81
30- Observation of domain structure and coarsening at Cu-Pd alloy vicinal surfaces,
S. Goapper, L. Barbier and B. Salanon, A. Loiseau et X. Tolleres, Phys. Rev. B 57 (1998) 12497.
29- X ray observation of a chemical order driven morphological transition on the surface of a A3B type alloy,
L. Barbier, S. Goapper, B. Salanon, R. Caudron, A. Loiseau, J. Alvarez, S. Ferrer and X. Tolleres, Phys. Rev. Letters 78 (1997) 3003.
28- Adsorption on vicinal surfaces: Pb/Cu(1,1,11) a TEAS study,
S. Goapper, L. Barbier ans B. Salanon, Surface Science 364 (1996) 99.
27- Roughening of vicinal surfaces and step-step interactions : application to Cu(1,1,11) by means of statistical analysis of STM images,
L. Barbier, L. Masson, J. Cousty and B. Salanon, Surface Science 345 (1996) 197
26- Surface structure and morphology,
B. Salanon, L. Barbier and P. Hecquet,
Computer simulation in material Science, Ed Ho Kirchner LP Kubin V. Pontikis, NATO-ASI Series, Klumer Academic Publishers, 308 (1996) 149.
25- Influence of an adsorbate on the morphology of a vicinal surface: Sulfur on Cu(1 1 11), A STM and helium diffraction study,
L. Masson, L. Barbier, J. Cousty and B. Salanon, Surface Science 338 (1995) 60
24- Structure and ordering dynamics for Au deposition on Au (110) (1×2))
L. Barbier, B. Salanon and J. Sprösser, J. Vac. Sci Technol. A 13(1) (1995) 117.
23- Observation of a double-step/single-step phase transition on a vicinal surface of Cu83Pd17 (110),
L. Barbier, B. Salanon and A. Loiseau, Phys. Rev B Brief Report 50, (1994), 4929.
22- The Au(110) (2×1) surface phase diagram and (2×1) ordering after growth,
L. Barbier, B. Salanon and J. Sprösser, Surface Review and Letters 1 (1994) 75.
21- Statistical analysis of STM images and measurement of the step-step interaction on Cu vicinal surfaces,
L. Masson, L. Barbier, J. Cousty and B. Salanon, Surface Science Letters 317, (1994), L1115
and Erratum : Surface Science 324 (1995) L378.
20- The roughening and pinning transition on vicinal surfaces of Si(100),
B.Salanon, L. Barbier and J. Lapujoulade, Applied Surface Science 65/66 (1993) 575
19- Growth and ordering dynamics for Au deposition on Au(110) (2×1),
L. Barbier, B. Salanon, J. Sprösser and J. Lapujoulade, Surface Science 287/288 (1993) 930
18- Wetting transition on vicinal surfaces of Si(100),
B. Salanon, L. Barbier and J. Lapujoulade, J. Vac. Sci Technol. A 10(4), 2066, (1992)
17- Une surface en or,
L. Barbier et B. Salanon, Défis du CEA n°12 (1992).
16- Experimental study by He diffraction (TEAS) of a vicinal silicon (100) surface : Si(1 1 17),
L. Barbier and J. Lapujoulade, Surface Science 253 (1991) 303
15- Structure of the Na/Si(100) (2×1) and Cs/Si(100) (2×1) interfaces studied by photoemission extended X ray adsorption fine structure,
S.T. Kim, P. Soukiassian, L. Barbier, S. Kapoor, Z. Hurych, Phys. Rev. B 44 (1991) 5622.
14- Thermally activated defects on crystal surfaces.
J. Lapujoulade, B. Salanon and L. Barbier, The structure of surfaces ICSOS III Springer (1991) 264.
13- Observation of the double-step-single-step transition on a vicinal surface of Si(100),
L. Barbier, A Khater, B. Salanon and J. Lapujoulade, Phys. Rev. B, Rapid Com. B15 43 (1991) 14730.
12- Study by thermal energy atom scattering of the reconstructions of the Si(100) surface,
L. Barbier and J. Lapujoulade, Vacuum 41 (1990) 615
11- Investigation by thermal energy atom scattering of the (2×1) clean Si(100) surface and of the C(8×8) and (2×8) reconstructions induced by copper,
L. Barbier and J. Lapujoulade, J. Vac. Sci. Technol. A8 (1990) 2662
10- Vibrational excitation and quenching of N2+ in collision with He at relative energies below 1 eV,
M. Kriegel, R. Richter, W. Lindinger, L. Barbier and E.E. Ferguson, J. Chem. Phys. 88 (1988) 213.
Abstract.
9- Theoretical interpretation of Penning and associative ionisation in collisions between two excited rubidium atoms,
L. Barbier, A. Pesnelle and M. Chéret, J. Phys B. Atomic and Molecular Physics 20 (1987) 1249, Abstract.
8- Experimental study of Penning and Hornbeck-Molnar ionisation of rubidium atoms excited in a high s or d level (5d < nl < 11s ),
L. Barbier and M. Chéret, J. Phys B. Atomic and Molecular Physics 20 (1987) 1229, Abstract.
7- Collisional ion pair formation in an excited alkali-metal vapor,
L. Barbier, M.T. Djerad and M. Chéret, Phys. Rev. A 34 (1986) 2710.
6- Ionisation collisionelle dans les alcalins,
M. Chéret, L. Barbier and M.T. Djerad, Annales de Physique C3, 11 (1986) 215.
5- Experimental evidence for negative-ion formation by the collisional reaction Rb(6d)+Rb(5s)–>Rb+ + Rb–,
M. Chéret and L. Barbier, Phys. Rev. A 30 (1984) 1132.
4- Energy pooling process in rubidium vapour,
L. Barbier and M. Chéret, J. Phys B. Atomic and Molecular Physics 16 (1983) 3213, Abstract.
3- Penning and associative ionisation of highly excited rubidium atoms,
M. Chéret, L. Barbier ,W. Lindinger and R. Deloche, J. Phys B. Atomic and Molecular Physics 15 (1982) 3463, Abstract.
2- Ion formation in collisions of Rb(8s) with Rb(5p) and Rb(5s),
M. Chéret, W. Lindinger, L. Barbier and R. Deloche, Chem. Phys. Lett. 88 (1982) 229
.
1- Very high resolution study of high Rydberg levels of the configurations 4f14 6s nd of Yb I,
L. Barbier and R.J. Champeau, J. Physique 41 (1980) 947
Publications dans la base HAL – Open access
Enseignement
« Thèses et Projet » dans le cadre des formations : « Encadrement et Valorisation de la Thèse » (EVT) et « Préparation et Valorisation de la Thèse » (PVT) proposées par l’INSTN.
Cours « Surface » DEA matériaux, Université de Poitiers (2001).