Recherche - Archive ouverte HAL Accéder directement au contenu

Filtrer vos résultats

55 résultats
Page :
triés par
Image document

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 , et al.
Physical Review B, 2017, 95 (22), pp.224107. ⟨10.1103/PhysRevB.95.224107⟩
Article dans une revue hal-01552083v1

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

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

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 , et al.
Physical Review Letters, 2014, 113 (22), pp.227402. ⟨10.1103/PhysRevLett.113.227402⟩
Article dans une revue hal-01088100v1

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 , et al.
4th International School and Symposium on Synchrotron Radiation in Natural Sciences, ISSRNS 2019, Jun 2019, Zakopane, Poland
Communication dans un congrès hal-02412542v1
Image document

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

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 , et al.
Physical Chemistry Chemical Physics, 2019, 21 (12), pp.6606-6612. ⟨10.1039/C8CP07074A⟩
Article dans une revue hal-02063361v1

Understanding elastically-driven cooperativity in molecular photomagnetic materials

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

Précurseurs à la déstabilisation d'un empilement granulaire.

 Axelle Amon , Roman Bertoni , Jérôme Crassous
Réunion générale du GDR MéPhy, Jun 2012, Agay, France
Communication dans un congrès hal-00933418v1
Image document

Ultrafast photo-switching of spin crossover crystals : coherence and cooperativity

 Roman Bertoni
Other [cond-mat.other]. Université de Rennes, 2013. English. ⟨NNT : 2013REN1S048⟩
Thèse tel-01016162v1

Coherent and incoherent structural dynamics in laser-excited antimony

 L. Waldecker , T. Vasileiadis , Roman Bertoni , R. Ernstorfer , T. Zier , et al.
Physical Review B, 2017, 95 (5), ⟨10.1103/PhysRevB.95.054302⟩
Article dans une revue hal-01508399v1
Image document

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 , et al.
Communications Physics, 2022, 5 (1), pp.168. ⟨10.1038/s42005-022-00940-0⟩
Article dans une revue hal-03723851v1
Image document

Elastically driven cooperative response of a molecular material impacted by a laser pulse

 Roman Bertoni , Maciej Lorenc , Hervé Cailleau , Antoine Tissot , Jérôme Laisney , et al.
Nature Materials, 2016, 15 (6), pp.606-610. ⟨10.1038/nmat4606⟩
Article dans une revue hal-01294246v1

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 , et al.
Physical Chemistry Chemical Physics, 2012, 14 (18), pp.6192-9. ⟨10.1039/c2cp23587k⟩
Article dans une revue hal-00909271v1
Image document

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 , et al.
Physical Review B, 2023, 108 (1), pp.014306. ⟨10.1103/PhysRevB.108.014306⟩
Article dans une revue hal-04195287v1
Image document

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 , et al.
Physical Review B, 2020, 102 (13), ⟨10.1103/PhysRevB.102.134104⟩
Article dans une revue hal-02964126v1
Image document

Coherent structural dynamics in V2O3 under hydrostatic pressure

 Janod Etienne , Corraze Benoit , Tranchant Julien , Danylo Babich , Cario Laurent , et al.
GdRUP, Dec 2023, Paris, France
Poster de conférence hal-04414513v1

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 , et al.
PSDTM, 2012, Versailles, France
Communication dans un congrès hal-00917778v1
Image document

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 , et al.
CrystEngComm, 2016, 18 (38), pp.7269-7275. ⟨10.1039/C6CE00659K⟩
Article dans une revue hal-01309441v1

Ultrafast photo-switching of spin crossover crystals: From molecules to size-scalable material

 Roman Bertoni
Seminar at the Fritz Haber Institut (FHI), Jun 2013, Berlin, Germany
Communication dans un congrès hal-00903518v1
Image document

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
Image document

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 , et al.
Accounts of Chemical Research, 2015, 48 (3), pp.774-781. ⟨10.1021/ar500444d⟩
Article dans une revue hal-01118869v1

Ultrafast Heat Flow in Heterostructures of Au Nanoclusters on Thin Films Atomic Disorder Induced by Hot Electrons

 Thomas Vasileiadis , Lutz Waldecker , Dawn Foster , Alessandra da Silva , Daniela Zahn , et al.
ACS Nano, 2018, 12 (8), pp.7710-7720. ⟨10.1021/acsnano.8b01423⟩
Article dans une revue hal-01879729v1
Image document

Light-induced spin crossover—Solution and solid-state processes

 Guillaume Chastanet , Maciej Lorenc , Roman Bertoni , Cédric Desplanches
Comptes Rendus. Chimie, 2018, 21 (12), pp.1075-1094. ⟨10.1016/j.crci.2018.02.011⟩
Article dans une revue hal-01935503v1

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 , et al.
PIPT7: Photoinduced Phase Transitions and Cooperative Phenomena, Nov 2021, Santa Fee, United States
Communication dans un congrès hal-03721035v1

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 , et al.
Banff Meeting on Structural Dynamics, Feb 2013, Banff, Canada
Communication dans un congrès hal-00910918v1
Image document

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 , et al.
European Journal of Inorganic Chemistry, 2018, 2018 (3-4), pp.272-277. ⟨10.1002/ejic.201700657⟩
Article dans une revue hal-01556322v1

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 , et al.
Réunion GDR MICO, 2010, Dinard, France
Communication dans un congrès hal-00919603v1
Image document

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 , et al.
Nature Communications, 2021, 12 (1), pp.1239. ⟨10.1038/s41467-021-21316-y⟩
Article dans une revue hal-03157411v1
Image document

Dynamical limits by downsizing for the photo-induced switching in a molecular material revealed by time-resolved X-ray diffraction

 Maciej Lorenc , Alix Volte , Céline Mariette , Roman Bertoni , Marco Cammarata , et al.
2021
Pré-publication, Document de travail hal-03447715v1

Experimental investigation of plastic deformations before a granular avalanche

 Axelle Amon , Roman Bertoni , Jérôme Crassous
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2013, 87 (1), pp.12204. ⟨10.1103/PHYSREVE.87.012204⟩
Article dans une revue hal-00805606v1
Page :