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Yann Gallais



01 57 27 69 89

Bureau : 638B

adress :
Bâtiment Condorcet
6ème étage – Bureau 638 B
10 rue Alice Domon et Léonie Duquet
75205 PARIS CEDEX 13

ResearcherID : http://www.researcherid.com/rid/E-5240-2011


  • Unconventionnal superconductivity
  • Correlated electronic phases
  • 2D Materials
  • Optical control of phases of matter, non-linear optics
  • Ultrafast spectroscopy



  • 2016 – 2017 : Invited Professor and JSPS Fellow, Université de Tokyo (Japan)
  • 2016 : Professor, Université Paris Cité
  • 2007- : Associate Professor, Université Paris-Diderot
  • 2004-2007 : Post Doctoral Researcher, Columbia University (New York)
  • 2004 : Post-Doctoral Researcher, Université Paris Diderot
  • 2003 : PhD, Université Pierre et Marie Curie Paris VI



- Disentangling Lattice and Electronic Instabilities in the Excitonic Insulator Candidate Ta2NiSe5 by Nonequilibrium Spectroscopy Kota Katsumi, Alexandr Alekhin, Sofia-Michaela Souliou, Michael Merz, Amir-Abbas Haghighirad, Matthieu Le Tacon, Sarah Houver, Maximilien Cazayous, Alain Sacuto, and Yann Gallais
Physical Review Letters 130, 106904 (2023)

- Nematic-Fluctuation-Mediated Superconductivity Revealed by Anisotropic Strain in Co-BaFe2As2 Jean-Côme Philippe, Jimmy Faria, Anne Forget, Dorothée Colson, Sarah Houver, Maximilien Cazayous, Alain Sacuto, Indranil Paul and Yann Gallais
Physical Review Letters 129, 187002 (2022)

- Elasto-Raman scattering : Arsenic optical phonon as a probe of nematicity in BaFe2As2 Jean-Côme Philippe, Jimmy Faria, Anne Forget, Dorothée Colson, Sarah Houver, Maximilien Cazayous, Alain Sacuto, and Yann Gallais Physical Review B 105, 024518 (2022) Editor’s Suggestion

- Orbital dichotomy of Fermi liquid properties in Sr2RuO4 revealed by Raman spectroscopy J. -C. Philippe, B. Baptiste, C. Sow, Y. Maeno, A. Forget, D. Colson, M. Cazayous, A. Sacuto, Y. Gallais,
Physical Review B 103, 235147 (2021) Editor’s Suggestion 10.1103/PhysRevB.103.235147

- Ultrafast switching to an insulating-like metastable state by amplitudon excitation of a charge density wave N. Yoshikawa, H. Suganuma, H. Matsuoka, P. Hemme, M. Cazayous, Y. Gallais, M. Nakano, Y. Iwasa, R. Shimano,
Nature Physics 17, 909 (2021) 10.1038/s41567-021-01267-3

- Lattice-shifted nematic quantum critical point in S-FeSe S. Chibani, D. Farina, P. Massat, M. Cazayous, A. Sacuto, T. Urata, Y. Tanabe, K. Tanigaki, A. E. Böhmer, P. C. Canfield, M. Merz, S. Karlsson, P. Strobel, P. Toulemonde, I. Paul, Y. Gallais
npj Quantum Materials 6, 1-8 (2021) 10.1038/s41535-021-00336-3

- Magnon bound states vs. anyonic Majorana excitations in the Kitaev honeycomb magnet α-RuCl3 Dirk Wulferding, Youngsu Choi, Seung-Hwan Do, Chan Hyeon Lee, Peter Lemmens, Clement Faugeras, Yann Gallais, Kwang-Yong Choi
Nature Communications 11, 1603 (2020) 10.1038/s41467-020-15370-1

- Critical nematic fluctuations at the onset of the pseudogap phase in the cuprate superconductor Bi2Sr2CaCu2O8+δ N. Auvray, S. Benhabib, M. Cazayous, A. Sacuto, I. Paul, J. Schneeloch, R. D. Zhong, G. D. Gu, A. Forget, S. Colson and Y. Gallais
Nature Communication 10, 5209 (2019) 10.1038/s41467-019-12940-w

- Probing chiral electronic excitations in bilayer graphene by Raman Scattering E. Riccardi, O. Kashuba, M. A. Méasson, M. Cazayous, A. Sacuto and Y. Gallais
Physical Review Materials, 3, 014002 (2019) 10.1103/PhysRevMaterials.3.014002

- Higgs-mode radiance and charge-density-wave order in 2H−NbSe2 R. Grasset, T. Cea, Y. Gallais, M. Cazayous, A. Sacuto, L. Cario, L. Benfatto, and M.-A. Méasson
Physical Review B 97, 094502 (2018)

- Collapse of Critical Nematic Fluctuations in FeSe under Pressure Pierre Massat, Yundi Quan, Romain Grasset, Marie-Aude Méasson, Maximilien Cazayous, Alain Sacuto, Sandra Karlsson, Pierre Strobel, Pierre Toulemonde, Zhiping Yin, and Yann Gallais
Physical Review Letters 121, 077001 (2018)

- Higgs Mode in the d-Wave Superconductor Bi2Sr2CaCu2O8+x Driven by an Intense Terahertz Pulse K. Katsumi, N. Tsuji, Y. Hamada, R. Matsunaga, J. Schneeloch, R.D. Zhong, G. Gu, H. Aoki, Y. Gallais and R. Shimano
Physical Review Letters 120, 117001 (2018) Editor’s suggestion 10.1103/PhysRevLett.120.117001

- A ferroelectric quantum phase transition inside the superconducting dome of Sr1−xCaxTiO3−δ
C. W. Rischau, X. Lin, C. P. Grams, D. Finck, S. Harms, J. Engelmayer, T. Lorenz, Y. Gallais, B. Fauqué, J. Hemberger and K. Behnia
Nature Physics 13, 643-648 (2017) 10.1038/nphys4085