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Ruello, Pascal

Ruello, Pascal

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Pascal Ruello, Professor  of Physics,

(born march 6th 1973),

Le Mans Université - CNRS UMR 6283, France 

Institut des Molécules et Matériaux du Mans


Research Topics :
  • Solid State Physics : Ultrafast phenomena in Condensed Matter, electron-phonon coupling, semiconductor physics, phase transition in correlated compounds, phonons in nanostructures.


Main collaborators :

-       Univ. Le Mans, France : Dr. V. Juvé, Dr. G. Vaudel, Dr. M. Weber, Dr. G. Brotons, Pr. B. Arnaud, Dr. R. Busselez, Pr. V. Gusev.

-       Ecole CentraleSupelec Paris, Lab. SPMS : Dr. B. Dkhil, Dr. C. Paillard

-       UMPhy Thalès CNRS : Dr. S. Fusil, Dr. V. Garcia

-       Université Amiens : Dr. H. Bouyanfif

-       CEA Saclay SPEC : Dr. M. Viret, Dr. J-Y. Chauleau

-       Univ. Silesia, Poland : Pr. J. Szade. Dr. K. Balin


  • Publications.

peer-reviewed articles.

Some recent selected papers :


  • Review articles :


A[54] Advances in applications of time-domain Brillouin scattering for nanoscale imaging

VE Gusev, P Ruello, Applied Physics Reviews 5 (3), 031101 (2018) / revue


A[53]  Photothermal optomechanics

P Ruello, Nature Photonics 10 (11), 692-693 (2016) / contribution éditoriale (news & views)


A[52]  Nanophononics: State of the Art and Perspectives, colloquium paper.

  1. Volz et al, Eur. J. Phys. B, (2016) 89: 15 / revue


A[51]  Physical Mechanism of generation of coherent acoustic phonons by ultrafast laser action,

  1. Ruello, V. Gusev, Ultrasonics, Review Paper (invited), (2015). / revue


  • Articles-Letters:


A[50] Optical absorption by design in a ferroelectric: co-doping in BaTiO 3

S Hao, M Yao, G Vitali-Derrien, P Gemeiner, M Otoničar, P Ruello, H. Bouyanfif, P-E Janolin, B. Dkhil, C. Paillard, Journal of Materials Chemistry C 10 (1), 227-234 (2022).


A[49] Hot-carrier and optical-phonon ultrafast dynamics in the topological insulator  upon iron deposition on its surface

M Weis, K Balin, B Wilk, T Sobol, A Ciavardini, G Vaudel, V Juvé, B Arnaud, B Ressel, M Stupar, KC Prince, G De Ninno, P Ruello, J Szade, Physical Review B 104 (24), 245110 (2021)


A[48]  Nonthermal Transport of Energy Driven by Photoexcited Carriers in Switchable Solid States of GeTe

R Gu, T Perrault, V Juvé, G Vaudel, M Weis, A Bulou, N Chigarev, A Levchuk, S Raetz, VE Gusev, Z Cheng, H Bhaskaran, P Ruello, Physical Review Applied 16 (1), 014055 (2021)


A[47] Ultrafast light-induced shear strain probed by time-resolved x-ray diffraction: Multiferroic  as a case study

V Juvé, R Gu, S Gable, T Maroutian, G Vaudel, S Matzen, N Chigarev, Samuel Raetz, VE Gusev, M Viret, A Jarnac, C Laulhé, AA Maznev, B Dkhil, Pascal Ruello, Physical Review B 102 (22), 220303 (2020)


A[46] Coherent acoustic phonons generated by ultrashort terahertz pulses in nanofilms of metals and topological insulators

A Levchuk, B Wilk, G Vaudel, F Labbé, B Arnaud, K Balin, J Szade, P Ruello, V Juvé, Physical Review B 101 (18), 180102 (2020)


A[45] Europium Doping Impact on the Properties of MBE Grown Bi2Te3 Thin Film

K Balin, M Wojtyniak, M Weis, M Zubko, B Wilk, R Gu, P Ruello, J Szade

Materials 13 (14), 3111 (2020)


A[44] Exciton control in a room temperature bulk semiconductor with coherent strain pulses

E Baldini, A Dominguez, T Palmieri, O Cannelli, A Rubio, P Ruello, Majed Chergui,

Science advances 5 (11), eaax2937          (2019)


A[43] Magnetoelastic and magnetoelectric couplings across the antiferromagnetic transition in multiferroic

M Lejman, C Paillard, V Juvé, G Vaudel, N Guiblin, L Bellaiche, M Viret, Vitalyi E Gusev, Brahim Dkhil, Pascal Ruello, Physical Review B 99 (10), 104103 (2019)


A[42] Evaluation of the structural phase transition in multiferroic (Bi1− x Prx)(Fe0. 95 Mn0. 05) O3 thin films by a multi-technique approach including picosecond laser ultrasonics

S Raetz, A Lomonosov, S Avanesyan, N Chigarev, E de Lima Savi, Alain Bulou, Nicolas Delorme, Zheng Wen, Qiao Jin, Maju Kuriakose, Anthony Rousseau, Gwenaëlle Vaudel, Pascal Ruello, Di Wu, Vitalyi Gusev, Applied Sciences 9 (4), 736 (2019).


A[41] Phonon-Driven Selective Modulation of Exciton Oscillator Strengths in Anatase TiO2 Nanoparticles, E Baldini, T Palmieri, A Dominguez, P Ruello, A Rubio, M Chergui, Nano letters 18 (8), 5007-5014, (2018).


A[40] Controlling the nanocontact nature and the mechanical properties of a silica nanoparticle assembly, J Avice, C Boscher, G Vaudel, G Brotons, V Juve, M Edely, C Méthivier, V. E. Gusev, P. Belleville, H. Piombini, P. Ruello, The Journal of Physical Chemistry C 121 (42), 23769-23776, (2017).


A[39] Quantum size effect on charges and phonons ultrafast dynamics in atomically controlled nanolayers of topological insulators Bi2Te3, M Weis, B Wilk, G Vaudel, K Balin, R Rapacz, A Bulou, B Arnaud, J Szade, P Ruello, Scientific reports 7 (1), 1-9 (2017).


A[38] Ultrafast non-thermal laser excitation of gigahertz longitudinal and shear acoustic waves in spin-crossover molecular crystals [Fe(PM–AzA)2(NCS)2], T Parpiiev, M Servol, M Lorenc, I Chaban, R Lefort, E Collet, H Cailleau, P Ruello, Nathalie Daro, Guillaume Chastanet, T Pezeril, Applied Physics Letters 111 (15), 151901 (2017).


A[37] Ultrafast acousto-optic mode conversion in optically birefringent ferroelectrics, M Lejman, G Vaudel, IC Infante, I Chaban, T Pezeril, M Edely, GF Nataf, Mael Guennou, Jens Kreisel, Vitalyi E Gusev, Brahim Dkhil, Pascal Ruello, Nature communications 7 (1), 1-10 (2016).


A[36] Ultrafast acousto-plasmonics in gold nanoparticle superlattices, P. Ruello, A. Ayouch, G. Vaudel, T. Pezeril, N. Delorme, S. Sato, K. Kimura, and V. E. Gusev, Phys. Rev. B 92 , 174304 (2015) ,


A[35] Ultrafast light-induced coherent optical and acoustic phonons in few quintuple layers of the

topological insulator Bi2Te3,

  1. Weis, K. Balin, R. Rapacz, A. Nowak, M. Lejman, J. Szade, and P. Ruello, Phys. Rev. B 92 , 014301 (2015)


A[34] Laser generation of hypersound by a terahertz photo-Dember electric field in a piezoelectric GaAs semiconductor,

G Vaudel, T Pezeril, A Lomonosov, M Lejman, P Ruello, V Gusev, Phys. Rev. B 90 (1), 014302 (2014)


A[33] Giant ultrafast photo-induced shear strain in ferroelectric BiFeO3,

Lejman, Mariusz; Vaudel, Gwenaelle; Infante, Ingrid C., Gemeiner, Pascale, Gusev, V., Dkhil, B., Ruello, P. Nature Comm. 5, 4301  (2014) doi:10.1038/ncomms5301 


A[32] Ultrafast optical detection of coherent acoustic phonons emission driven by superdiffusive hot electrons,

  1. Lejman, V. Shalagatskyi, O. Kovalenko, T. Pezeril, V. Temnov, P. Ruello, J. Opt. Soc. Am B, 31 282-2890 (2014)


  • Teaching :

-       General Physics (Bachelor): optics, thermodynamics, quantum mechanics, symmetry, tensors.

-       Advanced solid state physics (Master): phonons, electrons, light-matter interaction, ultrafast science.

-       International teaching activities (Master in Poland and in Vietnam) : Ultrafast phenomena in condensed matter


  • Memberships, nominations, conferences organization

National level

-      Member of the bureau of GdR Ultrafast Phenomena  

-      Nominated Member of the ANR committee (CE 30) 2019-2022.

-       Elected member of the CNRS National Committee of Scientific Research (France) for the Condensed Matter division  (2012-2016).

-       Elected Member of the Scientific Council of University of Maine (2012-2016)

International Level

-       Program Committee member of the International Conference SPIE Photonic West (San Francisco, USA, since 2016).

-       Program Committee member of the International Conference on Phonons Scattering in Condensed Matter (Nottingham 2015).

-       Workshop organization EUPHONON, sept. 1-4 2014 Le Mans (co-chair D. Donadio, Max-Planck Mainz, )

-       Scientific committee member of EMRS spring Meeting 2014,

-       Scientific committee member International Conference on Photoacoustics and Photothermal Phenomena (ICPPP Conferences 2011-2015),

-       Co-Organization of a special session during the International Congress on Ultrasonics (Gdansk 2011) with  O. Wright and V. Gusev

-       Director of the International Summer School CNRS Son et Lumière 2010 (IESC Cargèse). Organizing Committee: P. Ruello (Univ du Maine), A. Mlayah (Univ Toulouse), C. Sotomayor-Torres (Univ Barcelone), A. Kent (Univ. Nottingham),

-       Organization of the International Summer School CNRS Son et Lumière 2010 (IESC Cargèse). Organizing Committee: P. Ruello (Univ Le Mans), A. Mlayah (Univ Toulouse), C. Sotomayor-Torres (Univ Barcelone), A. Kent (Univ. Nottingham),

2019 (Les Houches) Organizing Committee: A. Crut (Univ Lyon), M. Bargheer (Univ Potsdam), Y. Guillet (Univ Toulouse), P. Ruello( Univ Le Mans)


-       Member of the French Physical Society since 2005.

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