Professor - Université Paris Cité
email : yann.gallais(at)u-paris.fr
tel : +33 1 57 27 69 89
fax : +33 1 57 27 62 41
address :
Bâtiment Condorcet
6th floor. Office 638B
10 rue Alice Domon et Léonie Duquet
75205 PARIS CEDEX 13
ResearcherID : http://www.researcherid.com/rid/E-5240-2011
RESEARCH ACTIVITIES :
Iron based superconductors and cuprates
Light probe and control of correlated electronic phases
Graphene and Chalcogenides
Ultrafast Spectroscopy
SCIENTIFIC BACKGROUND
2016 - 2017 : Invited Professor and JSPS Fellow, University of Tokyo (Japan)
2016 : Professor, Université Paris Cité
2007- : Associate Professor, Université Paris-Diderot
2004-2007 : Post-doc at Columbia University (New York)
2003 : PhD Université Pierre et Marie Curie Paris VI
SELECTED RECENT ARTICLES
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)
10.1103/PhysRevLett.129.187002
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 Suggestion10.1103/PhysRevB.105.024518
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)
10.1103/PhysRevB.97.094502
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)
10.1103/PhysRevLett.121.077001
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
Charge-induced nematicity in FeSe
P. Massat, D. Farina, I. Paul, S. Karlsson, P. Strobel, P. Toulemonde, M.-A. Measson, M. Cazayous, A. Sacuto, S. Kasahara, T. Shibuachi, Y. Matsuda and Y. Gallais Proc. Natl. Acad. Sci. (USA) 113 (33), 9177-9181 (2016) 10.1073/pnas.1606562113
Gate dependent electonic Raman scattering in graphene
E. Riccardi, M. A. Measson, M. Cazayous, A. Sacuto, Y. Gallais
Physical Review Letters 116, 066805 (2016) 10.1103/PhysRevLett.116.066805
Charge nematicity and electronic Raman scattering in iron-based superconductors
Y. Gallais, I. Paul
Compte Rendus Physique 17, 113-139 (2016)
Nematic resonance in the Raman response of iron-based superconductors
Y. Gallais, I. Paul, L. Chauviere, J. Schmalian
Physical Review Letters 116, 017001 (2016)