Stefano Curiotto

Axe

Nanomatériaux

E-mail

stefano.curiotto@cnrs.fr

Localisation

Grade

CRCN

Fonction

chercheur

Information
Publications

Activity

surface and structure dynamics; low energy electron microscopy

Thèmes

Wetting, surface and interface properties.

Recherche

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.

Parcours

from October 2009 CNRS researcher 2007-2009 Postdoc 09/02/2007 PhD in Chemical Sciences 16/09/2003 Master degree in Materials Science

Publications

2026

Growth and domain structure of GeTe ferroelectric thin films on miscut silicon substrates: The key role of atomic steps

Léa Meynier, Fabio Verducci, Guillaume Ayala, Boris Croes, Fabien Cheynis, Pierre Müller, Stefano Curiotto, Salia Cherifi-Hertel, Frédéric Leroy

Journal of Applied Physics 139 (2026)10.1063/5.0280904

2025

Thermomigration of Au-Ge microdroplets on Ge(111): Atomic mechanisms and effects on surface morphology

Nayef Abu Dahech, Frédéric Leroy, Pierre Müller, Fabien Cheynis, Stefano Curiotto

Physical Review Materials 9:103403 (2025)10.1103/p1lf-r9y9

Real-time helium bubble growth in tungsten by in-situ GISAXS

L. Corso, S. Curiotto, F. Cheynis, P. Muller, Elodie Bernard, M. Cabie, C. Martin, F. Leroy

Nuclear Materials and Energy 42:101894 (2025)10.1016/j.nme.2025.101894

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

Pushing the thickness limit of the giant Rashba effect in ferroelectric semiconductor GeTe

Boris Croes, Alexandre Llopez, Calvin Tagne-Kaegom, Bodry Tegomo Chiogo, Bertrand Kierren, Pierre Müller, Stefano Curiotto, Patrick Le Fèvre, François Bertran, Andrés Saúl, Yannick Fagot-Revurat, Frédéric Leroy, Fabien Cheynis

Nano Letters (2024)10.1021/acs.nanolett.4c03281

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

Surface thermomigration of 2D voids

Stefano Curiotto, Nicolas Combe, Pierre Müller, Ali El Barraj, Nayef Abu Dahech, Fabien Cheynis, Olivier Pierre-Louis, Frédéric Leroy

Applied Physics Letters 125:121601 (2024)10.1063/5.0228961

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 Saúl, Bertrand Kierren, Geoffroy Kremer, Patrick Le Fèvre, François Bertran, Yannick Fagot-Revurat, Fabien Cheynis

ACS Applied Materials & Interfaces 16:20878-20885 (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

Hole opening from growing interfacial voids: A possible mechanism of solid state dewetting

Stefano Curiotto, Anna Chame, Pierre Müller, Carl Thompson, Olivier Pierre-Louis

Applied Physics Letters 120:091603 (2022)10.1063/5.0083139

Reflections on the effect of an external flux in surface physics

Stefano Curiotto, F. Leroy, F. Cheynis, P. Müller

Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces 725:122158 (2022)10.1016/j.susc.2022.122158

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)