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Eric Collet

42
Documents

Présentation

### Eric Collet, ### professor of Physics ### The Institute of Physics of Rennes, mixed research unit [CNRS ](http://blogperso.univ-rennes1.fr/eric.collet/www.cnrs.fr/)- [University Rennes 1](http://www.univ-rennes1.fr/). **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.**
### Eric Collet, ### professor of Physics ### The Institute of Physics of Rennes, mixed research unit [CNRS ](http://blogperso.univ-rennes1.fr/eric.collet/www.cnrs.fr/)- [University Rennes 1](http://www.univ-rennes1.fr/). **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.**

Publications

roman-bertoni
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Multiscale out-of-equilibrium dynamics driven by pulsed laser excitation in spin-crossover materials: A combined thermoelastic and mechanoelastic study

Laurentiu Stoleriu , Masamichi Nishino , Seiji Miyashita , Alexandru Stancu , Roman Bertoni
Physical Review B, 2023, 108 (1), pp.014306. ⟨10.1103/PhysRevB.108.014306⟩
Article dans une revue hal-04195287v1
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Dynamical limits for the molecular switching in a photoexcited material revealed by X-ray diffraction

Alix Volte , Celine Mariette , Roman Bertoni , Marco Cammarata , Xu Dong
Communications Physics, 2022, 5 (1), pp.168. ⟨10.1038/s42005-022-00940-0⟩
Article dans une revue hal-03723851v1
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Strain wave pathway to semiconductor-to-metal transition revealed by time-resolved X-ray powder diffraction

Céline Mariette , Maciej Lorenc , Hervé Cailleau , Eric Collet , Laurent Guérin
Nature Communications, 2021, 12 (1), pp.1239. ⟨10.1038/s41467-021-21316-y⟩
Article dans une revue hal-03157411v1

Out-of-equilibrium lattice response to photo-induced charge-transfer in a MnFe Prussian blue analogue

Giovanni Azzolina , Roman Bertoni , Céline Mariette , Marco Cammarata , Elzbieta Trzop
Journal of Materials Chemistry C, 2021, 9 (21), pp.6773-6780. ⟨10.1039/d1tc01487k⟩
Article dans une revue hal-03244969v1
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General Landau theory of non-symmetry-breaking and symmetry-breaking spin transition materials

Giovanni Azzolina , Roman Bertoni , Eric Collet
Journal of Applied Physics, 2021, 129 (8), pp.085106. ⟨10.1063/5.0041453⟩
Article dans une revue hal-03157211v1
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Landau Theory for Non-Symmetry-Breaking Electronic Instability Coupled to Symmetry-Breaking Applied to Prussian Blue Analogue

Giovanni Azzolina , Roman Bertoni , Claude Ecolivet , Hiroko Tokoro , Shin-Ichi Ohkoshi
Physical Review B, 2020, 102 (13), ⟨10.1103/PhysRevB.102.134104⟩
Article dans une revue hal-02964126v1
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Lattice phonon modes of the spin crossover crystal [Fe(phen)2(NCS)2] studied by THz, IR, Raman spectroscopies and DFT calculations

Eric Collet , Giovanni Azzolina , Tomoaki Ichii , Laurent Guérin , Roman Bertoni
The European Physical Journal B: Condensed Matter and Complex Systems, 2019, 92 (1), pp.12. ⟨10.1140/epjb/e2018-90553-2⟩
Article dans une revue hal-01982843v1
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Single laser shot photoinduced phase transition of rubidium manganese hexacyanoferrate investigated by X-ray diffraction

Giovanni Azzolina , Eric Collet , Céline Mariette , Marco Cammarata , Elzbieta Trzop
European Journal of Inorganic Chemistry, 2019, 2019 (27), pp.3142-3147. ⟨10.1002/ejic.201801478⟩
Article dans une revue hal-02017137v1
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Finite Size Effects on the Switching Dynamics of Spin-Crossover Thin Films Photoexcited by a Femtosecond Laser Pulse

Karl Ridier , Alin-Ciprian Bas , Victoria Shalabaeva , William Nicolazzi , L. Salmon
Advanced Materials, 2019, 31 (25), pp.1901361. ⟨10.1002/adma.201901361⟩
Article dans une revue hal-02161140v1

Temperature dependence of the cooperative out-of-equilibrium elastic switching in a spin-crossover material

Roman Bertoni , Eric Collet , Hervé Cailleau , M.-L. Boillot , Antoine Tissot
Physical Chemistry Chemical Physics, 2019, 21 (12), pp.6606-6612. ⟨10.1039/C8CP07074A⟩
Article dans une revue hal-02063361v1
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Probing transient photoinduced charge-transfer in Prussian Blue Analogues with time-resolved XANES and optical spectroscopy

S. Zerdane , Marco Cammarata , Lodovico Balducci , Roman Bertoni , Laure Catala
European Journal of Inorganic Chemistry, 2018, 2018 (3-4), pp.272-277. ⟨10.1002/ejic.201700657⟩
Article dans une revue hal-01556322v1
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A theoretical approach for elastically driven cooperative switching of spin crossover compounds impacted by an ultrashot laser pulse

Cristian Enachescu , Roman Stoleriu , Masamichi Nishino , Seiji Miyashita , Roman Stancu
Physical Review B, 2017, 95 (22), pp.224107. ⟨10.1103/PhysRevB.95.224107⟩
Article dans une revue hal-01552083v1
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Elastically driven cooperative response of a molecular material impacted by a laser pulse

Roman Bertoni , Maciej Lorenc , Hervé Cailleau , Antoine Tissot , Jérôme Laisney
Nature Materials, 2016, 15 (6), pp.606-610. ⟨10.1038/nmat4606⟩
Article dans une revue hal-01294246v1
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Cooperative elastic switching vs laser heating in [Fe(phen)2(NCS)2] spin-crossover crystals excited by a laser pulse

R Bertoni , Maciej Lorenc , T Graber , R Henning , K Moffat
CrystEngComm, 2016, 18 (38), pp.7269-7275. ⟨10.1039/C6CE00659K⟩
Article dans une revue hal-01309441v1
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Femtosecond spin-state photo-switching dynamics in an FeIII spin crossover solid accompanied by coherent structural vibrations

Roman Bertoni , Maciej Lorenc , Jerome Laisney , Antoine Tissot , Alain Moréac
Journal of Materials Chemistry C, 2015, 3 (30), pp.7792-7801. ⟨10.1039/C5TC00854A⟩
Article dans une revue hal-01152947v1
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Femtosecond photoswitching dynamics and microsecond thermal conversion driven by laser heating in FeIII spin-crossover solids.

Roman Bertoni , Maciej Lorenc , A. Tissot , M.L. Boillot , Eric Collet
Coordination Chemistry Reviews, 2015, 282-283, pp.66-76. ⟨10.1016/j.ccr.2014.05.024⟩
Article dans une revue hal-01005418v1
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Ultrafast Light-Induced Spin-State Trapping Photophysics Investigated in Fe(phen) 2 (NCS) 2 Spin- Crossover Crystal

Roman Bertoni , Marco Cammarata , Maciej Lorenc , Samir F. Matar , Jean-François Létard
Accounts of Chemical Research, 2015, 48 (3), pp.774-781. ⟨10.1021/ar500444d⟩
Article dans une revue hal-01118869v1
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Sequential Activation of Molecular Breathing and Bending during Spin-Crossover Photoswitching Revealed by Femtosecond Optical and X-Ray Absorption Spectroscopy

Marco Cammarata , Roman Bertoni , Maciej Lorenc , Hervé Cailleau , Sergio Di Matteo
Physical Review Letters, 2014, 113 (22), pp.227402. ⟨10.1103/PhysRevLett.113.227402⟩
Article dans une revue hal-01088100v1
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Femtosecond optical pump-probe reflectivity studies of spin-state photo-switching in the spin-crossover molecular crystals [Fe(PM-AzA)2(NCS)2]

Andrea Marino , Marina Servol , Roman Bertoni , Maciej Lorenc , Cindy Mauriac
Polyhedron, 2013, 66, pp.123-128. ⟨10.1016/j.poly.2013.03.009⟩
Article dans une revue hal-00904690v1

Ultrafast spin-state photoswitching in a crystal and slower consecutive processes investigated by femtosecond optical spectroscopy and picosecond X-ray diffraction.

Eric Collet , Nicolas Moisan , Cherif Baldé , Roman Bertoni , Elzbieta Trzop
Physical Chemistry Chemical Physics, 2012, 14 (18), pp.6192-9. ⟨10.1039/c2cp23587k⟩
Article dans une revue hal-00909271v1

Femtosecond spin-state photoswitching of molecular nanocrystals evidenced by optical spectroscopy.

Roman Bertoni , Maciej Lorenc , Marina Servol , Antoine Tissot , Marie-Laure Boillot
Angewandte Chemie International Edition, 2012, 51 (30), pp.7485-9. ⟨10.1002/anie.201202215⟩
Article dans une revue hal-00856279v1

The cooperative spin-state transition of an iron(III) compound [FeIII(3-MeO-SalEen)2]PF6: thermal- vs. ultra-fast photo-switching

Antoine Tissot , Roman Bertoni , Eric Collet , Loïc Toupet , Marie-Laure Boillot
Journal of Materials Chemistry, 2011, 21, pp.18347. ⟨10.1039/C1JM14163E⟩
Article dans une revue hal-00697378v1

Making ultrafast phase transition movie with streaming crystallography and femtosecond XANES in Prussian blue analogues

Eric Collet , Giovanni Azzolina , Roman Bertoni , Céline Mariette , Marco Cammarata
33th European Crystallographic Meeting, Aug 2022, Versailles, France
Communication dans un congrès hal-03721048v1

Spin crossover, charge transfer, radical dimerization and symmetry breaking: BREAKING: unsymmetric hysteresis loop and sequence of phases

Eric Collet , Giovanni Azzolina , Roman Bertoni
2BSwitch 2021 Symposium, Aug 2021, Bayreuth, Germany
Communication dans un congrès hal-03720895v1

Transitions de phase ultra-rapides résolues en temps

M. Servol , Céline Mariette , Maciej Lorenc , Marco Cammarata , Roman Bertoni
Ecole Thématique Chocolas 2, Oct 2021, Saint-Pierre-d'Oléron, France
Communication dans un congrès hal-03722228v1

Decoupling with X-FEL electronic and structural dynamics for understanding the emergence of functions in photomagnetic materials

Eric Collet , Giovanni Azzolina , Serhane Zerdane , Marius Hervé , Gaël Privault
Pacifichem, Dec 2021, Honolulu, United States
Communication dans un congrès hal-03721034v1

Photoinduced charge-transfer in Prussian blue analogues: from local self-trapping to macroscopic phase transition

Eric Collet , Giovanni Azzolina , Serhane Zerdane , Marius Hervé , Gaël Privault
PIPT7: Photoinduced Phase Transitions and Cooperative Phenomena, Nov 2021, Santa Fee, United States
Communication dans un congrès hal-03721035v1

Sonder la structure et la dynamique de matériaux fonctionnels à l'échelle femtoseconde avec les X-FEL

Eric Collet , Marco Cammarata , Céline Mariette , Maciej Lorenc , Roman Bertoni
Science autour des FEL-XFEL, Dec 2020, Paris, France
Communication dans un congrès hal-03720876v1

From molecular switching to material transformation: revisiting the spin crossover with ultrafast pump-probe techniques

Elzbieta Trzop , Maciej Lorenc , E. Collet , Marco Cammarata , Roman Bertoni
4th International School and Symposium on Synchrotron Radiation in Natural Sciences, ISSRNS 2019, Jun 2019, Zakopane, Poland
Communication dans un congrès hal-02412542v1

Understanding elastically-driven cooperativity in molecular photomagnetic materials

Céline Mariette , Marie-Laure Boillot , Marco Cammarata , Benoit Corraze , Roman Bertoni
ECM31, Aug 2018, Oviedo, Spain
Communication dans un congrès hal-02293037v1

Understanding elastically-driven cooperativity in molecular photomagnetic materials

Céline Mariette , Marie-Laure Boillot , Marco Cammarata , Benoit Corraze , Roman Bertoni
GdR MCM2, Nov 2018, Dourdan, France
Communication dans un congrès hal-02293034v1

Understanding elastically-driven cooperativity in molecular photomagnetic materials

Céline Mariette , Marie-Laure Boillot , Marco Cammarata , Benoit Corraze , Roman Bertoni
GdR UP, Dec 2018, Paris, France
Communication dans un congrès hal-02293035v1

Coherent spin state photoswitching dynamics in the [FeII(PM-AZA)2(NCS)2] molecular crystals investigated by femtosecond optical and XANES pump-probe techniques

Andrea Marino , Marina Servol , Roman Bertoni , Maciej Lorenc , Marco Cammarata
XFEL 2013, X-ray Free Electron Laser School and symposium, Sep 2013, Dinard, France
Communication dans un congrès hal-00881453v1

Combined femtosecond X-ray absorption and optical spectroscopies reveal photo-switching structural pathway in a spin-crossover crystal

Roman Bertoni , Marco Cammarata , Hervé Cailleau , Maciej Lorenc , Jean-François Letard
Banff Meeting on Structural Dynamics, Feb 2013, Banff, Canada
Communication dans un congrès hal-00910918v1

Investigating the roles of ligand-field states in femtosecond LIESST and REVERSE LIESST dynamics for spin crossover molecular crystals

Andrea Marino , Marina Servol , Roman Bertoni , Marco Cammarata , Maciej Lorenc
Journées scientifiques du GdR MCM-2 : Magnétisme et Commutation Moléculaires., Dec 2013, Dourdan, France
Communication dans un congrès hal-00926876v1

Coherent photoswitching dynamics in the feii(pm-aza)2(ncs)2 molecular crysrtals investigated by femtosecond optical and xanes pump-probe techniques

Andrea Marino , Marina Servol , Roman Bertoni , Maciej Lorenc , Marco Cammarata
ISPPCC 2013, Jul 2013, Traverse City, United States
Communication dans un congrès hal-00903451v1

Femtosecond pump-probe reflectivity studies of spin-state photo-switching in the Fe(II) molecular crystals Fe(PM-AZA)2(NCS)2

Andrea Marino , Marina Servol , Roman Bertoni , Maciej Lorenc , Cindy Mauriac
ISSMMD : International Symposium and School on Multifunctional Molecular Materials and Devices, Sep 2012, Durham, United Kingdom
Communication dans un congrès hal-00917795v1

Ultrafast Photo Switching in Spin Transition Molecular Crystals: Nanoscale and Coherence

Roman Bertoni , Maciej Lorenc , Eric Collet , Hervé Cailleau , Marina Servol
13èmes journées de la matière condensée, JMC13, Aug 2012, Montpellier, France
Communication dans un congrès hal-00934028v1

Femtosecond pump-probe reflectivity studies of spin-state photo-switching in the Fe(II) molecular crystals Fe(PM-AZA)2(NCS)2

Andrea Marino , Marina Servol , Roman Bertoni , Maciej Lorenc , Cindy Mauriac
GdR MCM2, Dec 2012, Dourdan, France
Communication dans un congrès hal-00916614v1

Femtosecond pump-probe reflectivity studies of spin-state photo-switching in the Fe(II) molecular crystals Fe(PM-AZA)2(NCS)2

Andrea Marino , Roman Bertoni , Maciej Lorenc , Marina Servol , Cindy Mauriac
PSDTM, 2012, Versailles, France
Communication dans un congrès hal-00917778v1

Ultrafast Photo Switching in Spin Transition Molecular Crystals: Nanoscale and Cooperativity

Roman Bertoni , A. Tissot , Maciej Lorenc , M.L. Boillot , J.F. Letard
International Workshop on Phase transition and Dynamical properties of Spin Transition Materials: PDSTM2012, May 2012, Versailles, France
Communication dans un congrès hal-00935768v1

Etudes optiques et cristallographiques de transitions de phases photo-induites: états stationnaires et dynamiques ultrarapides

Eric Collet , Roman Bertoni , Ludovic Roudaut , Maciej Lorenc , Marina Servol
Réunion GDR MICO, 2010, Dinard, France
Communication dans un congrès hal-00919603v1