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31

HAL Page of Pr Eric Collet


Eric Collet,

professor of Physics

The Institute of Physics of Rennes, mixed research unit CNRS - University Rennes 1.

 

I develop research projects around photoinduced phase transitions and the photo-control of materials on ultra-short time-scales. In the lab, we are performing structural studies (x-ray diffraction and photo-crystallography) and we combine femtosecond optical experiments to ultrafast x-ray studies performed on synchrotron and X-FEL.

 

 


Roman Bertoni   

Journal articles17 documents

  • Giovanni Azzolina, Roman Bertoni, Claude Ecolivet, Hiroko Tokoro, Shin-Ichi Ohkoshi, et al.. Landau Theory for Non-Symmetry-Breaking Electronic Instability Coupled to Symmetry-Breaking Applied to Prussian Blue Analogue. Physical Review B, American Physical Society, 2020, 102 (13), ⟨10.1103/PhysRevB.102.134104⟩. ⟨hal-02964126⟩
  • Giovanni Azzolina, Eric Collet, Céline Mariette, Marco Cammarata, Elzbieta Trzop, et al.. Single laser shot photoinduced phase transition of rubidium manganese hexacyanoferrate investigated by X-ray diffraction. European Journal of Inorganic Chemistry, Wiley-VCH Verlag, 2019, 2019 (27), pp.3142-3147. ⟨10.1002/ejic.201801478⟩. ⟨hal-02017137⟩
  • Roman Bertoni, Eric Collet, Hervé Cailleau, Marie-Laure Boillot, Antoine Tissot, et al.. Temperature dependence of the cooperative out-of-equilibrium elastic switching in a spin-crossover material. Physical Chemistry Chemical Physics, Royal Society of Chemistry, 2019, 21 (12), pp.6606-6612. ⟨10.1039/C8CP07074A⟩. ⟨hal-02063361⟩
  • Eric Collet, Giovanni Azzolina, Tomoaki Ichii, Laurent Guérin, Roman Bertoni, et al.. Lattice phonon modes of the spin crossover crystal [Fe(phen)2(NCS)2] studied by THz, IR, Raman spectroscopies and DFT calculations. European Physical Journal B: Condensed Matter and Complex Systems, Springer-Verlag, 2019, 92 (1), pp.12. ⟨10.1140/epjb/e2018-90553-2⟩. ⟨hal-01982843⟩
  • K. Ridier, A.-C. Bas, V. Shalabaeva, W. Nicolazzi, L. Salmon, et al.. Finite Size Effects on the Switching Dynamics of Spin-Crossover Thin Films Photoexcited by a Femtosecond Laser Pulse. Advanced Materials, Wiley-VCH Verlag, 2019, 31 (25), pp.1901361. ⟨10.1002/adma.201901361⟩. ⟨hal-02161140⟩
  • S. Zerdane, Marco Cammarata, Lodovico Balducci, Roman Bertoni, Laure Catala, et al.. Probing transient photoinduced charge-transfer in Prussian Blue Analogues with time-resolved XANES and optical spectroscopy. European Journal of Inorganic Chemistry, Wiley-VCH Verlag, 2018, 2018 (3-4), pp.272-277. ⟨10.1002/ejic.201700657⟩. ⟨hal-01556322⟩
  • Cristian Enachescu, Roman Stoleriu, Masamichi Nishino, Seiji Miyashita, Roman Stancu, et al.. A theoretical approach for elastically driven cooperative switching of spin crossover compounds impacted by an ultrashot laser pulse. Physical Review B: Condensed Matter and Materials Physics, American Physical Society, 2017, 95 (22), pp.224107. ⟨10.1103/PhysRevB.95.224107⟩. ⟨hal-01552083⟩
  • Roman Bertoni, Maciej Lorenc, Hervé Cailleau, Antoine Tissot, Jérôme Laisney, et al.. Elastically driven cooperative response of a molecular material impacted by a laser pulse. Nature Materials, Nature Publishing Group, 2016, 15 (6), pp.606-610. ⟨10.1038/nmat4606⟩. ⟨hal-01294246⟩
  • R Bertoni, Maciej Lorenc, T Graber, R Henning, K Moffat, et al.. Cooperative elastic switching vs laser heating in [Fe(phen)2(NCS)2] spin-crossover crystals excited by a laser pulse. CrystEngComm, Royal Society of Chemistry, 2016, 18 (38), pp.7269-7275. ⟨10.1039/C6CE00659K⟩. ⟨hal-01309441⟩
  • Roman Bertoni, Marco Cammarata, Maciej Lorenc, Samir F. Matar, Jean-François Létard, et al.. Ultrafast Light-Induced Spin-State Trapping Photophysics Investigated in Fe(phen) 2 (NCS) 2 Spin- Crossover Crystal. Accounts of Chemical Research, American Chemical Society, 2015, 48 (3), pp.774-781. ⟨10.1021/ar500444d⟩. ⟨hal-01118869⟩
  • Roman Bertoni, Maciej Lorenc, A. Tissot, M.L. Boillot, Eric Collet. Femtosecond photoswitching dynamics and microsecond thermal conversion driven by laser heating in FeIII spin-crossover solids.. Coordination Chemistry Reviews, Elsevier, 2015, 282-283, pp.66-76. ⟨10.1016/j.ccr.2014.05.024⟩. ⟨hal-01005418⟩
  • Roman Bertoni, Maciej Lorenc, Jerome Laisney, Antoine Tissot, Alain Moréac, et al.. Femtosecond spin-state photo-switching dynamics in an FeIII spin crossover solid accompanied by coherent structural vibrations. Journal of Materials Chemistry C, Royal Society of Chemistry, 2015, 3 (30), pp.7792-7801. ⟨10.1039/C5TC00854A⟩. ⟨hal-01152947⟩
  • Marco Cammarata, Roman Bertoni, Maciej Lorenc, Hervé Cailleau, Sergio Di Matteo, et al.. Sequential Activation of Molecular Breathing and Bending during Spin-Crossover Photoswitching Revealed by Femtosecond Optical and X-Ray Absorption Spectroscopy. Physical Review Letters, American Physical Society, 2014, 113 (22), pp.227402. ⟨10.1103/PhysRevLett.113.227402⟩. ⟨hal-01088100⟩
  • Andrea Marino, Marina Servol, Roman Bertoni, Maciej Lorenc, Cindy Mauriac, et al.. Femtosecond optical pump-probe reflectivity studies of spin-state photo-switching in the spin-crossover molecular crystals [Fe(PM-AzA)2(NCS)2]. Polyhedron, Elsevier, 2013, 66, pp.123-128. ⟨10.1016/j.poly.2013.03.009⟩. ⟨hal-00904690⟩
  • Eric Collet, Nicolas Moisan, Cherif Baldé, Roman Bertoni, Elzbieta Trzop, et al.. Ultrafast spin-state photoswitching in a crystal and slower consecutive processes investigated by femtosecond optical spectroscopy and picosecond X-ray diffraction.. Physical Chemistry Chemical Physics, Royal Society of Chemistry, 2012, 14 (18), pp.6192-9. ⟨10.1039/c2cp23587k⟩. ⟨hal-00909271⟩
  • Roman Bertoni, Maciej Lorenc, Marina Servol, Antoine Tissot, Marie-Laure Boillot, et al.. Femtosecond spin-state photoswitching of molecular nanocrystals evidenced by optical spectroscopy.. Angewandte Chemie International Edition, Wiley-VCH Verlag, 2012, 51 (30), pp.7485-9. ⟨10.1002/anie.201202215⟩. ⟨hal-00856279⟩
  • Antoine Tissot, Roman Bertoni, Eric Collet, Loïc Toupet, Marie-Laure Boillot. The cooperative spin-state transition of an iron(III) compound [FeIII(3-MeO-SalEen)2]PF6: thermal- vs. ultra-fast photo-switching. Journal of Materials Chemistry, Royal Society of Chemistry, 2011, pp.18347. ⟨10.1039/C1JM14163E⟩. ⟨hal-00697378⟩

Conference papers14 documents

  • Elzbieta Trzop, Maciej Lorenc, E. Collet, Marco Cammarata, Roman Bertoni, et al.. From molecular switching to material transformation: revisiting the spin crossover with ultrafast pump-probe techniques. 4th International School and Symposium on Synchrotron Radiation in Natural Sciences, ISSRNS 2019, Jun 2019, Zakopane, Poland. ⟨hal-02412542⟩
  • Céline Mariette, Marie-Laure Boillot, Marco Cammarata, Benoit Corraze, Roman Bertoni, et al.. Understanding elastically-driven cooperativity in molecular photomagnetic materials. GdR UP, Dec 2018, Paris, France. ⟨hal-02293035⟩
  • Céline Mariette, Marie-Laure Boillot, Marco Cammarata, Benoit Corraze, Roman Bertoni, et al.. Understanding elastically-driven cooperativity in molecular photomagnetic materials. GdR MCM2, Nov 2018, Dourdan, France. ⟨hal-02293034⟩
  • Céline Mariette, Marie-Laure Boillot, Marco Cammarata, Benoit Corraze, Roman Bertoni, et al.. Understanding elastically-driven cooperativity in molecular photomagnetic materials. ECM31, Aug 2018, Oviedo, Spain. ⟨hal-02293037⟩
  • Andrea Marino, Marina Servol, Roman Bertoni, Maciej Lorenc, Marco Cammarata, et al.. Coherent photoswitching dynamics in the feii(pm-aza)2(ncs)2 molecular crysrtals investigated by femtosecond optical and xanes pump-probe techniques. ISPPCC 2013, Jul 2013, Traverse City, United States. ⟨hal-00903451⟩
  • Roman Bertoni, Marco Cammarata, Hervé Cailleau, Maciej Lorenc, Jean-François Letard, et al.. Combined femtosecond X-ray absorption and optical spectroscopies reveal photo-switching structural pathway in a spin-crossover crystal. Banff Meeting on Structural Dynamics, Feb 2013, Banff, Canada. ⟨hal-00910918⟩
  • Andrea Marino, Marina Servol, Roman Bertoni, Maciej Lorenc, Marco Cammarata, et al.. Coherent spin state photoswitching dynamics in the [FeII(PM-AZA)2(NCS)2] molecular crystals investigated by femtosecond optical and XANES pump-probe techniques. XFEL 2013, X-ray Free Electron Laser School and symposium, Sep 2013, Dinard, France. ⟨hal-00881453⟩
  • Andrea Marino, Marina Servol, Roman Bertoni, Marco Cammarata, Maciej Lorenc, et al.. Investigating the roles of ligand-field states in femtosecond LIESST and REVERSE LIESST dynamics for spin crossover molecular crystals. Journées scientifiques du GdR MCM-2 : Magnétisme et Commutation Moléculaires., Dec 2013, Dourdan, France. ⟨hal-00926876⟩
  • Andrea Marino, Marina Servol, Roman Bertoni, Maciej Lorenc, Cindy Mauriac, et al.. Femtosecond pump-probe reflectivity studies of spin-state photo-switching in the Fe(II) molecular crystals Fe(PM-AZA)2(NCS)2. GdR MCM2, Dec 2012, Dourdan, France. ⟨hal-00916614⟩
  • Andrea Marino, Roman Bertoni, Maciej Lorenc, Marina Servol, Cindy Mauriac, et al.. Femtosecond pump-probe reflectivity studies of spin-state photo-switching in the Fe(II) molecular crystals Fe(PM-AZA)2(NCS)2. PSDTM, 2012, Versailles, France. ⟨hal-00917778⟩
  • Andrea Marino, Marina Servol, Roman Bertoni, Maciej Lorenc, Cindy Mauriac, et al.. Femtosecond pump-probe reflectivity studies of spin-state photo-switching in the Fe(II) molecular crystals Fe(PM-AZA)2(NCS)2. ISSMMD : International Symposium and School on Multifunctional Molecular Materials and Devices, Sep 2012, Durham, United Kingdom. ⟨hal-00917795⟩
  • Roman Bertoni, A. Tissot, Maciej Lorenc, M.L. Boillot, J.F. Letard, et al.. Ultrafast Photo Switching in Spin Transition Molecular Crystals: Nanoscale and Cooperativity. International Workshop on Phase transition and Dynamical properties of Spin Transition Materials: PDSTM2012, May 2012, Versailles, France. ⟨hal-00935768⟩
  • Roman Bertoni, Maciej Lorenc, Eric Collet, Hervé Cailleau, Marina Servol, et al.. Ultrafast Photo Switching in Spin Transition Molecular Crystals: Nanoscale and Coherence. 13èmes journées de la matière condensée, JMC13, Aug 2012, Montpellier, France. ⟨hal-00934028⟩
  • Eric Collet, Roman Bertoni, Ludovic Roudaut, Maciej Lorenc, Marina Servol, et al.. Etudes optiques et cristallographiques de transitions de phases photo-induites: états stationnaires et dynamiques ultrarapides. Réunion GDR MICO, 2010, Dinard, France. ⟨hal-00919603⟩