Stefano Curiotto
surface and structure dynamics; low energy electron microscopy
Wetting, surface and interface properties.
Study of surface and interface effects in metal-ceramic systems. As a model system, we are currently studying Cu crystals on sapphire(Al2O3) substrates with different orientations. A Cu layer is deposited in ultra high vacuum on the substrates. Annealing the sample in a reducing atmosphere at the Cu melting temperature (TmCu) breaks the layer in droplets. Decreasing the temperature the droplets solidify. On further annealing below TmCu the system Cu solid-sapphire should reach the equilibrium. After quenching we study the shape of the Cu crystals and of the substrates by SEM and AFM. In order to investigate the interface Cu-sapphire we plan to cut by Focus Ion Beam a thin selected portion of the samples and to analyze it by TEM.
from October 2009 CNRS researcher
2024
Polarization structure of nanostrip domain intersections in GeTe films
Boris Croes, Fabien Cheynis, Salia Cherifi Cherifi-Hertel, Kokou Dodzi Dorkenoo, Pierre Müller, Stefano Curiotto, Frédéric Leroy
Physical Review B 109:024103 (2024)10.1103/PhysRevB.109.024103 
Rim nucleation and step-train orientation effects in SOI(111) dewetting
Stefano Curiotto, Pierre Müller, Fabien Cheynis, Igor Ozerov, Frédéric Leroy
Surfaces and Interfaces 45:103912 (2024)10.1016/j.surfin.2024.103912
Van der Waals epitaxy of Weyl-semimetal Td-WTe2
Alexandre Llopez, Frédéric Leroy, Calvin Tagne-Kaegom, Boris Croes, Adrien Michon, Chiara Mastropasqua, Mohamed Al Khalfioui, Stefano Curiotto, Pierre Müller, Andrés Saùl, Bertrand Kierren, Geoffroy Kremer, Patrick Le Fèvre, François Bertran, Yannick Fagot-Revurat, Fabien Cheynis
ACS Applied Materials & Interfaces (2024)10.1021/acsami.4c00676
2023
Tungsten evolution under helium irradiation: Shape of bubbles by TEM and in-situ GISAXS analysis
L. Corso, S. Curiotto, E. Bernard, Martiane Cabie, C. Martin, Lucio Martinelli, Fabien Cheynis, Pierre Müller, Frédéric Leroy
Nuclear Materials and Energy 37:101533 (2023)10.1016/j.nme.2023.101533
Early-stage growth of GeTe on Si(111)-Sb
Boris Croes, Fabien Cheynis, Yannick Fagot-Revurat, Pierre Müller, Stefano Curiotto, Frédéric Leroy
Physical Review Materials 7:014409 (2023)10.1103/PhysRevMaterials.7.014409
Thermomechanic behavior of epitaxial GeTe ferroelectric films on Si(111)
Boris Croes, Fabien Cheynis, Michaël Texier, Pierre Müller, Stefano Curiotto, Frédéric Leroy
Journal of Applied Physics 134:204103 (2023)10.1063/5.0173718
Atomistic Description of Interdroplet Ice-Bridge Formation during Condensation Frosting
Stefano Curiotto, David Paulovics, Christophe Raufaste, Franck Celestini, Thomas Frisch, Frédéric Leroy, Fabien Cheynis, Pierre Müller
Langmuir 39:579 (2023)10.1021/acs.langmuir.2c02860
Size-dependent diffusion of 3D nanovoids in a bcc solid
Stefano Curiotto, Pierre Müller, Fabien Cheynis, Loic Corso, Elodie Bernard, Frédéric Leroy
Applied Physics Letters 123:241603 (2023)10.1063/5.0175752
2022
Polar surface of ferroelectric nanodomains in GeTe thin films
B. Croes, F. Cheynis, P. Müller, S. Curiotto, F. Leroy
Physical Review Materials 6:064407 (2022)10.1103/PhysRevMaterials.6.064407
Automatic Ferroelectric Domain Pattern Recognition Based on the Analysis of Localized Nonlinear Optical Responses Assisted by Machine Learning
Boris Croes, Iaroslav Gaponenko, Cédric Voulot, Olivier Grégut, Kokou D Dorkenoo, Fabien Cheynis, Stefano Curiotto, Pierre Müller, Frédéric Leroy, Kumara Cordero‐edwards, Patrycja Paruch, Salia Cherifi Cherifi-Hertel
Advanced Physics Research 2200037 (2022)10.1002/apxr.202200037
2021
Kinetic Monte Carlo simulations of the diffusion and shape evolution of single-layer clusters on a hexagonal lattice with and without external force
Stefano Curiotto, Pierre Müller, Fabien Cheynis, Frédéric Leroy
Applied Surface Science 552:149454 (2021)10.1016/j.apsusc.2021.149454
Mechanism of droplet motion and in-plane nanowire formation with and without electromigration
Stefano Curiotto, Pierre Müller, Fabien Cheynis, Frédéric Leroy
Applied Surface Science 579:152015 (2021)10.1016/j.apsusc.2021.152015
2020
2D Manipulation of Nanoobjects by Perpendicular Electric Fields: Implications for Nanofabrication
Stefano Curiotto, F. Cheynis, Pierre Müller, Frédéric Leroy
ACS Applied Nano Materials 3:1118-1122 (2020)10.1021/acsanm.9b02517
Dynamics of Au-Ge liquid droplets on Ge(1 1 1) terraces: Nucleation, growth and dynamic coalescence
Ali El-Barraj, Stefano Curiotto, Fabien Cheynis, Pierre Müller, Frédéric Leroy
Applied Surface Science 509:144667 (2020)10.1016/j.apsusc.2019.144667
Electric forces on a confined advacancy island
Frédéric Leroy, Ali El-Barraj, Fabien Cheynis, Pierre Müller, Stefano Curiotto
Physical Review B 102 (2020)10.1103/PhysRevB.102.235412
Kinetics and coupled dynamics of dewetting and chemical reaction in Si/SiO2/Si system
Frédéric Leroy, D Landru, Fabien Cheynis, O Kononchuk, Pierre Müller, Stefano Curiotto
Journal of Materials Science (2020)10.1007/s10853-020-05161-w
2019
2D nanostructure motion on anisotropic surfaces controlled by electromigration
Stefano Curiotto, Pierre Müller, Ali El-Barraj, Fabien Cheynis, Olivier Pierre-Louis, Frédéric Leroy
Applied Surface Science 469:463-470 (2019)10.1016/j.apsusc.2018.11.049
Shape changes of two-dimensional atomic islands and vacancy clusters diffusing on epitaxial (1 1 1) interfaces under the impact of an external force
Stefano Curiotto, Frédéric Leroy, Pierre Muller, Fabien Cheynis, Michail Michailov, Ali El-Barraj, Bogdan Ranguelov
Journal of Crystal Growth 520:42-45 (2019)10.1016/j.jcrysgro.2019.05.016
Atomic Transport in Au-Ge Droplets: Brownian and Electromigration Dynamics
Frédéric Leroy, Ali El-Barraj, Pierre Müller, Fabien Cheynis, Stefano Curiotto
Physical Review Letters (2019)
2017
Spatial inhomogeneity and temporal dynamics of a 2D electron gas in interaction with a 2D adatom gas
Fabien Cheynis, Stefano Curiotto, Frédéric Leroy, Pierre Müller
Scientific Reports 7:10642 (2017)10.1038/s41598-017-10300-6
Surface-dependent scenarios for dissolution-driven motion of growing droplets
Stefano Curiotto, Frédéric Leroy, Fabien Cheynis, Pierre Müller
Scientific Reports 7:902 (2017)10.1038/s41598-017-00886-2
Dewetting of patterned solid films: Towards a predictive modelling approach
M. Trautmann, F. Cheynis, F. Leroy, S. Curiotto, O. Pierre-Louis, Pierre Müller
Applied Physics Letters 110:263105 (2017)10.1063/1.4990005
Interplay between deoxidation and dewetting for ultrathin SOI films
M. Trautmann, F. Cheynis, F. Leroy, S. Curiotto, Pierre Müller
Applied Physics Letters 110:161601 (2017)10.1063/1.4980132
2016
Surface diffusion of Au on root 3 x root 3 Si(111)-Au studied by nucleation-rate and Ostwald-ripening analysis
S. Curiotto, F. Cheynis, F. Leroy, Pierre Müller
Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces 647:8-11 (2016)10.1016/j.susc.2015.11.015
Catalytically enhanced thermal decomposition of chemically grown silicon oxide layers on Si(001)
F. Leroy, T. Passanante, F. Cheynis, S. Curiotto, E. B. Bussmann, Pierre Müller
Applied Physics Letters 108:111601 (2016)10.1063/1.4941799
How to control solid state dewetting: A short review
Frédéric Leroy, Lukasz Borowik, Fabien Cheynis, Yann Almadori, Stefano Curiotto, Martine Trautmann, Jean-Charles Barbé, Pierre Müller
Surface Science Reports 71:391-409 (2016)10.1016/j.surfrep.2016.03.002
2015
Orientation relationship of Cu crystals on the sapphire (10-10) m-plane and (10-12) r-plane
D. Chatain, S. Curiotto, P. Wynblatt, H. Meltzman, W.D. Kaplan, G.S. Rohrer
Journal of Crystal Growth 418:57-63 (2015)
In-plane Si nanowire growthmechanis in absence of external Si flux
S. Curiotto, F. Leroy, F. Cheynis, Pierre Müller
Nano Letters 15:4788-4792 (2015)
Self propelled motion of Au-Si droplets on Si(111) mediated by monoatomic step dissolution
S. Curiotto, F. Leroy, F. Cheynis, Pierre Müller
Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces 632:1-8 (2015)
Shape transition in nano-pits after solid-phase etching of SiO2 by Si islands
F. Leroy, Y. Saito, S. Curiotto, F. Cheynis, Olivier Pierre-Louis, Pierre Müller
Applied Physics Letters 106:191601 (2015)10.1063/1.4921091