Stéphane PONS

Born 1976

Tel.: +33 1 40 794 575

Senior Researcher (HDR), CNRS, Sorbonne University, PSL-Research university, Laboratoire de Physique et d’Etude des Matériaux (LPEM), Ecole supérieure de Physique et Chimie Industrielles, ESPCI-Paris

Office A0.13
10, rue Vauquelin
75005 Paris
France

Former Positions
Researcher, CNRS, Institut des NanoSciences de Paris, Université Pierre et Marie Curie (UPMC) - Paris 6, 2011 - 2015
Invited Scientist (research and teaching), Laboratory for Electronic Spectroscopy, Institute of Condensed Matter Physics, EPFL, 2007- 2011
Researcher, CNRS, Laboratoire de Physique des Matériaux, Institut Jean Lamour, Nancy Université - CNRS, 2005-2010
Junior Lecturer (research and teaching) , Nanostructures at Surfaces Lab- Institute of Condensed Matter Physics, EPFL, 2003-2005
Graduate Research Assistant, Institut Néel (formerly LEPES), CNRS - Joseph Fourier Université, 1999-2002

Education
HDR, PSL University, 2023
PhD, Physics, Joseph Fourier University Grenoble 1, 2002
M. Sc., Physics, Joseph Fourier University Grenoble 1, 1999

Skills
Angle resolved photoemission spectroscopy
Scanning tunneling microscopy and spectroscopy
Standard surface characterization tools (low energy electron diffraction, Auger spectroscopy …)
Growth, self-assembly or self-organization of nanostructures and supramolecular directed assemblies (H and metal-organic bonds) at surfaces
Ultrahigh vacuum and cryogenic techniques
Regular synchrotron user (SLS, SOLEIL, ELETTRA)

Teaching Experiences
ARPES experimental demonstration on youtube
+ 750h: Physics lectures, exercises, exams, practical courses and lab work
Participation to the formation of 15 PhD students and 2 post-docs

Research projects since 2015
2022- Principal investigator of SHOGUN project funded by an ANR research grant, ANR-22-CE09-0028-0
2021- Collaborator of SAGA project funded by an ANR research grant
2020- Collaborator of CRYSTOP project funded by an ANR-RSF research grant
2016-2019 Collaborator of SUPERSTRIPES project funded by an ANR-DFG research grant
2015-2018 Collaborator of MISTRAL project funded by an ANR research grant
2012-2017 Principal investigator of NANOSPECS project, supported by CNRS, C’NANO Ile de France DIM Nano-K and ESPCI-ParisTech : Development of a very high resolution and low temperature angle resolved photoemission platform

Publications list H Index 22

– Synergetic Exterior and Interfacial Approaches by Colloidal Carbon Quantum Dots for More Stable Perovskite Solar Cells Against UV
D. Zhang, Z. Hu, S. Vlaic, C. Xin, S. Pons, L. Billot, L. Aigouy and Z. Chen, accepted for publication in Small (2024)

– Manipulation of the magnetic state of a porphyrin-based molecule on gold: From Kondo to quantum nanomagnet via the charge fluctuation regime
Y. Gao, S. Vlaic, T. Gorni, L. de’ Medici, S. Clair, D. Roditchev, and S. Pons, ACS Nano 17, 9082–9089 (2023), preprint arXiv:2301.01101

– STM observation of the hinge-states of bismuth nanocrystals
T. Zhang, V. Sheina, S. Vlaic, S. Pons, D. Roditchev, C. David, G. Rodary, J.-C. Girard, and H. Aubin, Physical Review B 108, 085422 (2023), preprint arXiv.2303.06722

– Gold atoms promote macroscopic superconductivity in an atomic monolayer of Pb on Si(111)
D. S. Baranov, S. Vlaic, J. Baptista, E. Cofler, V. Stolyarov, D. Roditchev, and S. Pons, Nano Letters 22, 652-657 (2022)

– Superconducting Long-Range Proximity Effect through the Atomically Flat Interface of a Bi 2 Te 3 Topological Insulator,
V. Stolyarov, S. Pons, S. Vlaic, S. Remizov, D. Shapiro, H. Aubin, C. Brun, S. Bozhko, T. Cren, T. Menshchikova, E. V. Chulkov, W. Pogosov, Y. Lozovik, and D. Roditchev, The Journal of Physical Chemistry Letters 12, 9068–9075 (2021)

– Influence of surface and subsurface alloy on the electronic properties of graphene
K. Wang, T. Vincent, J.B. Bouhiron, S. Pons, D. Roditchev, S. Simon, M. Fonin, B. Paulus, Y. Dedkov, S. Vlaic, E. Voloshin, Carbon 183, 251-258 (2021)

– Stabilization of dense metallic Pb monolayer by decorating step edges with Au atoms on Si(111)
J. Baptista, S. Vlaic, E. Cofler, D. Roditchev, and S. Pons, Surface Science 712, 121887 (2021)

– Disorder-induced splitting in quasiparticle interference of Dirac electrons
V. Sheina , D. Khokhlov , S. Vlaic , S. Pons , H. Aubin , R. Akzyanov , A. Vasenko , T. Menshchikova , E. Chulkov , A. Golubov , T. Cren , D. Roditchev, The Journal of Physical Chemistry Letters 12, 3127–3134 (2021)

– Defective, hole-doped and superconducting quasi free-standing graphene on Re(0001) obtained by gold intercalation,
E. Mazaleyrat, S. Vlaic, A. Artaud, L. Magaud, T. Vincent, A.-C. Goméz-Herrero, S. Lisi, P. Singh, N. Bendiab, V. Guisset, P. David, S. Pons, D. Roditchev, C. Chapelier, J. Coraux, 2D Materials 8, 015002 (2020) and preprint arXiv:2009.13176

– Quantum Well States for Graphene Spin-Texture Engineering,
T. Vincent, E. Voloshina, S. Pons, S. Simon, M. Fonin, K. Wang, B. Paulus, D. Roditchev, Y. Dedkov, and S. Vlaic, The Journal of Physical Chemistry Letters 11, 1594–1600 (2020)

– Polarization dependence of angle-resolved photoemission with submicron spatial resolution reveals emerging one-dimensionality of electrons in NbSe3,
M. A. Valbuena, P. Chudzinski, S. Pons, S. Conejeros, P. Alemany, E. Canadell, H. Berger, E. Frantzeskakis, J. Avila, M. C. Asensio, T. Giamarchi, M. Grioni, Physical Review B 99, 075118 (2019)

– Broken symmetry of in-gap quasiparticle excitations in superconducting FeSe(001) with high defect density,
J. Baptista, S. Vlaic, P. Toulemonde, S. Karlsson, P. Strobel, D. Roditchev, S. Pons, Physical Review B 98, 220502(R) (2018) & Erratum

– Strong coupling and periodic interface potential in Pb/Sb(111) revealed by scanning tunneling spectroscopy,
T. Vincent, S. Vlaic, S. Pons, V. S. Stolyarov, S.I. Bozhko, Tianzhen Zhang, H. Aubin, D. Roditchev, Physical Review B 98, 155440 (2018)

– Quantum confinement effects in Pb nanocrystals grown on InAs,
T. Zhang, S. Vlaic, S. Pons, A. Assouline, A. Zimmers, D. Roditchev, H. Aubin and G. Allan, C. Delerue, C. David, G. Rodary, J.-C. Girard, Physical Review B 97, 214514 (2018)

– Quantum constriction at the interface between a superconducting nanocrystal and an electron accumulation layer,
S. Vlaic, S. Pons, T. Zhang, A. Assouline, A. Zimmers, D. Roditchev, H. Aubin and C. David, G. Rodary, J.-C. Girard, Physica C: Superconductivity and its Applications 552, 34-37 (2018)

– Emerging one-dimensionality from self-organization of electrons in NbSe3,
M. A. Valbuena, P. Chudzinski, S. Pons, S. Conejeros, P. Alemany, E. Canadell, H. Berger, E. Frantzeskakis, J. Avila, M. C. Asensio, T. Giamarchi, M. Grioni, arXiv preprint arXiv:1612.04712

– Double Fe-impurity charge state in the topological insulator Bi2Se3,
V. Stolyarov, S. Remizov, D. Shapiro, S. Pons, S. Vlaic, H. Aubin, D. Baranov, C. Brun, L. Yashina, S. Bozhko, T. Cren, W. Pogosov, and D. Roditchev, Applied Physics Letters 111, 251601 (2017)

– Superconducting parity effect across the Anderson limit,
S. Vlaic, S. Pons, T. Zhang, A. Assouline, A. Zimmers, C. David, G. Rodary, J.-C. Girard, D. Roditchev, H. Aubin, Nature Communications 8, 14549 (2017)

– Coherent long-range magnetic bound states in a superconductor,
G. C. Ménard, S. Guissart, C. Brun, S. Pons, V. S. Stolyarov, F. Debontridder, M. V. Leclerc, E. Janod, L. Cario, D.Roditchev, P. Simon & T. Cren, Nature Physics 11, 1013-1016 (2015) Cover magazine

– Quasiparticle spectra of 2H−NbSe2: Two-band superconductivity and the role of tunneling selectivity,
Y. Noat, J. A. Silva-Guillén, T. Cren, V. Cherkez, C. Brun, S. Pons, F. Debontridder, D. Roditchev, W. Sacks, L. Cario, P. Ordejón, A. García, and E. Canadell, Physical Review B 92, 134510 (2015)

– Remarkable effects of disorder on superconductivity of single atomic layers of lead on silicon,
C. Brun, T. Cren, V. Cherkez, F. Debontridder, S. Pons, D. Fokin, M. C. Tringides, S. Bozhko, L. B. Ioffe, B. L. Altshuler & D. Roditchev, Nature Physics 10, 444–450 (2014)

– Combined ARPES and STM study of Pb/Au(111) Moiré structure: One overlayer, two symmetries,
A. Crepaldi, S. Pons, E. Frantzeskakis, F. Calleja, M. Etzkorn, A. P. Seitsonen, K. Kern, H. Brune, and M. Grioni, Physical Review B 87, 115138 (2013)

– Two Distinct Phases of Bilayer Graphene Films on Ru(0001),
M. Papagno, D. Pacilé, D.Topwal, P. Moras, P. M. Sheverdyaeva, F. D. Natterer, A. Lehnert, S. Rusponi, Q. Dubout, F. Calleja, E. Frantzeskakis, S. Pons, J. Fujii, I. Vobornik, M. Grioni, C. Carbone, and H. Brune, ACS Nano 6, 9299-9304 (2012)

– Anisotropic spin gaps in BiAg2-Ag/Si(111),
A. Crepaldi, S.Pons, E. Frantzeskakis, K. Kern and M. Grioni, Physical Review B 85, 075411 (2012)

– Coverage-dependent symmetry of the electronic states of the Pt(111)-Ag-Bi interface: the ARPES view of a structural transition,
E. Frantzeskakis, S. Pons, A. Crepaldi, H. Brune, K. Kern and M. Grioni, Physical Review B 84, 245443 (2011)

– Band structure scenario for the giant spin-orbit splitting observed at the Bi/Si(111) interface,
E. Frantzeskakis, S.Pons, and M. Grioni, Physical Review B 82, 085440 (2010)

– Tuning the giant Rashba effect on a BiAg2 surface alloy: Two different approaches,
E. Frantzeskakis, A. Crepaldi, S. Pons, K. Kern and M. Grioni, Journal of Electron Spectroscopy Related Phenomena 181, 88-95 (2010)

– Silicon Surface with Giant Spin Splitting,
I. Gierz, T. Suzuki, E. Frantzeskakis, S. Pons, S. Ostanin, A. Ernst, J. Henk, M. Grioni, K. Kern, and C. R. Ast, Physical Review Letters 103, 046803 (2009)

– Supramolecular control of the magnetic anisotropy in two-dimensional high-spin Fe arrays at a metal interface,
P. Gambardella, S. Stepanow, A. Dmitriev, J. Honolka, F. de Groot, S. S. Gupta, D.D. Sarma, P. Bencok, S. Stanescu, S. Clair, S. Pons, N. Lin, H. Brune, J. V. Barth and K. Kern, Nature Materials, 8, 189-193 (2009). Cover magazine. Highly cited paper.

– Recent ARPES experiments on quasi-1D bulk materials and artificial structures,
M. Grioni, S. Pons and E. Frantzeskakis, Journal of Physics: Condensed Matter 21, 023201 (2009)

– Giant spin-orbit splitting in a surface alloy grown on a Si substrate: BiAg2/Ag/Si(111),
E. Frantzeskakis, S. Pons and M. Grioni, Physica B-Condensed Matter 404, 419-421 (2009)

– New Mechanism for Spin-Orbit Splitting of Conduction States in Surface Alloys,
E. Frantzeskakis, L. Moreschini, M. C. Falub, M. Grioni, S. Pons, C. R. Ast, D. Pacilé, M. Papagno, e-Journal of Surface Science and Nanotechnology 7, 264-268 (2009)

– Tunable spin gaps in a quantum-confined geometry,
E. Frantzeskakis, S. Pons, H. Mirhosseini, J. Henk, C. R. Ast, and M. Grioni, Physical Review Letters, 101, 196805 (2008)

– Does the surface matter? Hydrogen bonded chain formation of an oxalic amide derivative in two- and three-dimensional environment,
F. Klappenberger, M. E. Cañas-Ventura, S. Clair, S. Pons, U. Schlickum, Z.-R. Qu, T. Strunskus, A. Comisso, C. Wöll, H. Brune, K. Kern, A. De Vita, M. Ruben and J. V. Barth, ChemPhysChem 9, 2522 (2008)

– Nanopatterning the electronic properties of gold surfaces with self-organized superlattices of metallic nanostructures,
C. Didiot, S. Pons, B. Kierren, Y. Fagot-Revurat and D. Malterre, Nature Nanotechnology 2, 617 (2007). New and Views in Nature Nanotechnology. Research Highlight in Nature

– ARPES and STS investigation of Shockley states in thin metallic films and periodic nanostructures,
D. Malterre, B. Kierren, Y. Fagot-Revurat, S. Pons, A Tejeda, C Didiot, H Cercellier and A Bendounan, New Journal of Physics 9, 391 (2007)

– ARPES and STS investigation of noble metal Shockley states: Confinement in vicinal Au(1 1 1) surfaces and self-organized nanostructures,
C. Didiot, Y. Fagot-Revurat, S. Pons, B. Kierren and D. Malterre, Surface Science 601, 4029–4035 (2007)

– Conformational adaptation in supramolecular organisation at surfaces: H-bonded chains of oxalic amide derivatives on Au(111)
, F. Klappenberger, M.E. Cañas-Ventura, S. Clair, S. Pons, U. Schlickum, Z.-R. Qu, H. Brune, K. Kern, T. Strunskus, C. Wöll, A. Comisso, A. De Vita, M. Ruben and J.V. Barth, A European Journal of Chemical Physics and Physical Chemistry 8, 1782 (2007)

– Electronic properties of (Co, Ag) self-organized nano dots on Au(1 1 1) vicinal surfaces,
C. Didiot, Y. Fagot-Revurat, S. Pons, B. Kierren, D. Malterre, A. Tejedaa and S. Rousset, Applied Surface Science 254, 45-49 (2007)

– Reconstruction-induced multiple gaps in the weak coupling limit : the surface band of Au(111) vicinal surfaces,
C. Didiot, Y. Fagot-Revurat, S. Pons, B. Kierren, C. Chatelain and D. Malterre, Physical Review B 74, 081404 (2006)

– Ag nanostructures on Au(788): A self-assembled superlattice of metallic quantum resonators
C. Didiot, S. Pons, B. Kierren, Y. Fagot-Revurat and D. Malterre, Surface Science 600, 3917-3920 (2006)

– Coexistence of one- and two-dimensional supramolecular assemblies of Terephthalic acid on Pd(111) tuned by self-limiting deprotonation
M.E. Cañas-Ventura, F. Klappenberger, S. Clair, S. Pons, K. Kern, H. Brune, T. Strunskus, Ch. Wöll, R. Fasel, and J.V. Barth, the Journal of Chemical Physics 125, 184710 (2006)

– Monitoring Two-Dimensional Coordination Reactions: Directed Assembly of Co-Terephthalate Nanosystems on Au(111),
S. Clair, S. Pons, H. Brune, S. Fabris, S. Baroni, K. Kern and J.V. Barth, The Journal of Physical Chemistry B 110, 5627 (2006)

– Mesoscopic metallosupramolecular texturing through hierarchic assembly,
S. Clair, S. Pons, H. Brune, K. Kern and J.V. Barth, Angewandte Chemie International Edition, 44, 7294 (2005)

– Hindered electronic transport in two-dimensional metallic ErSi2 nanoscale islands on Si(111): An STM study,
I. Brihuega, E. Dupont-Ferrier, P. Mallet, L. Magaud, S. Pons, J. M. Gómez-Rodríguez and J-Y. Veuillen, Physical Review B 72, 205309 (2005)

– Observation of quantum interference patterns and electron confinement effects on a two-dimensional metal,
I. Brihuega, P. Mallet, L. Magaud, S. Pons, O. Custance, J. M. Gómez-Rodríguez and J.-Y. Veuillen, Physical Review B 69, 155407 (2004)

– STM study of Terephthalic Acid Self-Assembly on Au(111): Hydrogen-bonded Sheets on an Inhomogeneous Substrate,
S. Clair, S. Pons, Ari P. Seitsonen, H. Brune, K. Kern and J.V. Barth, The Journal of Physical Chemistry B 108, 14585 (2004)

– Spin-polarized Shockley state at Ni(111) free surface and at Ni-Cu-based structures on Cu(111) surface
L. Magaud, A. Pasturel, P. Mallet, S. Pons and J.-Y. Veuillen, Europhysics Letters 67, 90-95 (2004)

– Confinement of a Shockley-like surface state to artificial nanostructures on Ni(111),
S. Pons, P. Mallet, L. Magaud and J.-Y. Veuillen, Europhysics Letters 61, 375 (2003)

– Electron confinement effects on Ni-based nanostructures,
J.-Y. Veuillen, P. Mallet, L. Magaud and S. Pons, Journal of Physics : Condensed Matter 15, S2547 (2003)

– Spontaneous evolution of the Ni/Cu(111) interface at 300K,
S. Pons, P. Mallet, L. Magaud and J.-Y. Veuillen, Surface Science 511, 449 (2002)

– Electron confinement in nickel and copper nanostructures on Cu(111),
S. Pons, P. Mallet and J.-Y. Veuillen, Physical Review B 64, 193408 (2001)

OMNT publications
Former Expert at Observatory for Micro and NanoTechnologies (2013-2016)

Manipulation locale de l’état quantique supraconducteur, Stéphane Pons, Revue de veille - Nanoconstruction - Synthèse annuelle (Feb 2016)

Un dispositif supraconducteur monoatomique stable à l’air libre, Stéphane Pons, Revue de veille - Nanoconstruction - N°38 (Jun 2014)

[Microscopie de force d’échange magnétique, Xavier Bouju et Stéphane Pons, Revue de veille - Nanoconstruction - N°37 (Mar 2014)

Avènement de la spectroscopie magnétique à l’échelle atomique et sub-moléculaire, Stéphane Pons, Tristan Cren et Fabien Silly, Revue de veille - Nanoconstruction - Synthèse annuelle (Feb 2014)

Fabrication de graphène artificiel, Stéphane Pons, Revue de veille - Nanoconstruction - N°36 (Dec 2013)

Honors
2013-2017 CNRS Award of Excellence (4 years extra pay)
2007-2008 1 year CNRS transfer grant for my stay at EPFL
2004 CNRS permanent research position: Rank 3 (obtained at the 1st application)
2003 Pierre Favard award of the French society of Microscopy
1999-2002 French Minister of National Research and Education PhD scholarship