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Exciton binding energy and effective mass of CsPbCl3:a magneto-optical study

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Photonics Research 2020年第10期8卷 I0013-I0018页

作者： MICHAL BARANOWSKI PAULINA PLOCHOCKA RUI SU LAURENT LEGRAND THIERRY BARISIEN FREDERICK BERNARDOT QIHURA XIONG CHRISTOPHE TESTELIN MARIA CHAMARRO Department of Experimtental Physics Faculty of Furndamental Problems of TechnologyWroclaw University of Scolonce and TechnologyWroclawPoland laboratoire national des champs magnetiques intenses UPR 3228CNRS-UGA-UPS-NSAGrenoble and ToulouseFrance Dwision of Physics and Aopled Prysics School of Physical and Mathematical SciencesNarnyang Technological UniversitySingaporeSingapore Sorbone Universite CNRS-UMR 7588Institut des NanoSciences de ParisINSPParisFrance

High magnetile field spectroscopy has been performed on lead chloride-based perovskite,a material that attracts significant interest for photovoltaic and photonic applications within the past *** properties being mainly driven by the exciton states,we have mcasured the fundamental parameters,such as the exciton binding energy,effective mass,and dielectric *** the inorganic halide perovskites,CsPbCl3 owns the largest exciton binding energy and effective *** blue emmitting compound has also been compared with lower band gap energy perovskites and other semiconducting phasces,showing comparable band gap dependences for binding energy and Bohr radius.

关键词： perovskite energy mass

Investigation of the hydro-mechanical behaviour of fouled ballast

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2013年第4期14卷 244-255页

作者： Yu-jun CUI Trong Vinh DUONG Anh Minh TANG Jean-Claude DUPLA Nicolas CALON Alain ROBINET laboratoire Navier/CERMES Ecole des Ponts ParisTechBlaise PascalCité DescartesChamps-sur-Marne 77455 Marne-la-Vallée Cedex-France French national Railway Company 93574La Plaine St DenisFrance

In this study,a fouled ballast taken from the site of Sénissiat,France,was *** the hydraulic behaviour,a large-scale cell was developed allowing drainage and evaporation tests to be carried out with monitoring of both suction and volumetric water content at various positions of the *** was observed that the hydraulic conductivity of fouled ballast is decreasing with suction increase,as for common unsaturated *** effect of fines content was found to be *** the mechanical behaviour,both monotonic and cyclic triaxial tests were carried out using a large-scale triaxial *** water contents were *** results were interpreted in terms of shear strength and permanent axial *** appeared that the water content is an important factor to be accounted for since any increase of water content or degree of saturation significantly decreases the shear strength and increases the permanent *** modelling has been attempted based on the experimental *** model in its current state is capable of describing the effects of stress level,cycle number and water content.

关键词： Fouled ballast Degree of saturation Hydraulic behaviour Mechanical behaviour Fines content Constitutive modelling

Cotunneling transport in ultra-narrow gold nanowire bundles

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Nano Research 2013年第9期6卷 644-651页

作者： Anais Loubat Walter Escoffier Lise-Marie Lacroix Guillaume Viau Reasmey Tan Julian Carrey Benedicte Warot-Fonrose Bertrand Raquet laboratoire national des champs magnetiques intenses CNRS-INSA-UJF-UPS UPR3228 143 avenue de Rangueil F-31400 ToulouseFrance Universite de Toulouse INSA UPS LPCNO (Laboratoire de Physique et Chimie des Nano-Objets) F-31077 Toulouse France CNRS UMR5215 LPCNO F-31077 Toulouse France Centre d'Elaboration de Materiaux et d'Etudes Structurales CNRS 29 rue Jeanne Marvig F-31077 Toulouse France

We investigate the charge transport in close-packed ultra-narrow （1.5 nm diameter） gold nanowires stabilized by oleylamine ligands. We give evidence of charging effects in the weakly coupled one-dimensional （1D） nanowires, monitored by the temperature and the bias voltage. At low temperature, in the Coulomb blockade regime, the current flow reveals an original cooperative multi-hopping process between 1D-segments of Au-NWs, minimising the charging energy cost. Above the Coulomb blockade threshold voltage and at high temperature, the charge transport evolves into a sequential tunneling regime between the nearest- nanowires. Our analysis shows that the effective length of the Au-NWs inside the bundle is similar to the 1D localisation length of the electronic wave function （of the order of 120 nm _＋ 20 nm）, but almost two orders of magnitude larger than the diameter of the nanowire. This result confirms the high structural quality of the Au-NW segments.

关键词： ultra-narrow goldnanowires 1D nano-objects electronic transport variable cotunneling Coulomb blockade

Exciton binding energy and effective mass of CsPbCl_(3):a magneto-optical study:publisher’s note

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Photonics Research 2022年第10期10卷 2447-2447页

作者： MICHAL BARANOWSKI PAULINA PLOCHOCKA RUI SU LAURENT LEGRAND THIERRY BARISIEN FREDERICK BERNARDOT QIHUA XIONG CHRISTOPHE TESTELIN MARIA CHAMARRO Department of Experimental Physics Faculty of Fundamental Problems of TechnologyWroclaw University of Science and TechnologyWroclawPoland laboratoire national des champs magnétiques intenses UPR 3228CNRS-UGA-UPS-INSAGrenoble and ToulouseFrance Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingaporeSingapore Sorbonne Université CNRS-UMR 7588Institut des NanoSciences de ParisINSPParisFrance

The name of one of the authors,Qihua Xiong,was spelt incorrectly as“Qihura Xiong”in the original article[1].The article was corrected online on 23 September 2022.

关键词： Xiong corrected correctly

Measurement of iron characteristics under ramp compression

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Chinese Physics B 2017年第11期26卷 360-364页

作者：魏会冈 E Brambrink N Amadou A Benuzzi-Mounaix A Ravasio G Morard F Guyot T de Rességuier N Ozaki K Miyanishi 赵刚 M Koenig Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences LULI-CNRS Ecole Polytechnique CEA Université Paris-Saclay Sorbonne Universités UPMC Univ Paris 06 CNRS laboratoire d'utilisation des lasers intenses (LULI) Département de Physique Université Abdou Moumouni de Niamey Institut de Minéralogie de Physique des Matériaux et de Cosmochimie (IMPMC) Sorbonne Universités-UPMC UMR CNRS 7590Muséum National d'Histoire Naturelle Institut Pprime CNRS ENSMA Univ.Poitiers Graduate School of Engineering Osaka University

Laser-driven ramp compression was used to investigate iron characteristics along the isentropic path. The iterative Lagrangian analysis method was employed to analyze the free surface velocity profiles in iron stepped target measured with two VISARs. The onset stress for the α to ε phase transformation was determined from the sudden change in the sound velocity and was found over-pressurized compared to the static and shock results. The derived stress（26 GPa） and strain rate（up to 10-8 s^-1） are consistent with our previous experimental results. The stress-density relations were compared with those from previous ramp experiments and good agreements were found, which experimentally confirms the simulations,showing that iterative Lagrangian analysis can be applied to the ramp-compression data with weak shock.

关键词： isentropic compression iron phase transformation

On the study of hydrodynamic instabilities in the presence of background magnetic fields in high-energy-density plasmas

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Matter and Radiation at Extremes 2021年第2期6卷 37-45页

作者： M.J.-E.Manuel B.Khiar G.Rigon B.Albertazzi S.R.Klein F.Kroll F.-E.Brack T.Michel P.Mabey S.Pikuz J.C.Williams M.Koenig A.Casner C.C.Kuranz General Atomics San DiegoCalifornia 92121USA University of Chicago ChicagoIllinois 60637USA laboratoire pour l’utilisation des lasers intenses 91128 Palaiseau CedexFrance University of Michigan Ann ArborMichigan 48109USA Helmholtz-Zentrum Dresden-Rossendorf 01328 DresdenGermany Technische Universitat Dresden 01062 DresdenGermany national Research Nuclear University Moscow 115409Russia Centre lasers intenses et applications 33405 Talence CedexFrance

Blast-wave-driven hydrodynamic instabilities are studied in the presence of a background B-field through experiments and simulations in the high-energy-density(HED)physics *** experiments conducted at the laboratoire pour l’utilisation des lasers intenses(LULI),a laserdriven shock-tube platform was used to generate a hydrodynamically unstable interface with a prescribed sinusoidal surface perturbation,and short-pulse x-ray radiography was used to characterize the instability growth with and without a 10-T *** LULI experiments were modeled in FLASH using resistive and ideal magnetohydrodynamics(MHD),and comparing the experiments and simulations suggests that the Spitzer model implemented in FLASH is necessary and sufficient for modeling these planar *** results suggest insufficient amplification of the seed B-field,due to resistive diffusion,to alter the hydrodynamic *** the ideal-MHD simulations did not represent the experiments accurately,they suggest that similar HED systems with dynamic plasma-β(=2μ_(0)ρv^(2)/B^(2))values of less than∼100 can reduce the growth of blast-wave-driven Rayleigh–Taylor *** findings validate the resistive-MHD FLASH modeling that is being used to design future experiments for studying B-field effects in HED plasmas.

关键词： field. hydrodynamic instabilities

Terahertz Radiation from a Longitudinal Electric Field Biased Femtosecond Filament in Air

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Chinese Physics Letters 2020年第6期37卷 44-47页

作者： Yi Lin Shaojie Liu Aurélien Houard AndréMysyrowicz Vladimir T.Tikhonchuk Shanghai Key Lab of Modern Optical System University of Shanghai for Science and TechnologyShanghai 200093China laboratoire d’Optique Appliquée ENSTA ParisEcole PolytechniqueCNRSInstitut Polytechnique de Paris828 Boulevard des Maréchaux91762 Palaiseau cedexFrance Centre Lasers intenses et Applications University of Bordeaux-CNRS-CEA351 Cours de la Liberation33405 Talence cedexFrance ELI-Beamlines Institute of PhysicsCzech Academy of Sciences25241 Dolni BrezanyCzech Republic

The terahertz(THz)temporal waveform and spectrum from a longitudinal electrically biased femtosecond filament is studied *** initial direction of the electron motion inside the unbiased filament plasma is deduced from the transformation of the THz temporal waveform with applied fields of opposite ***,a spectrum shift to lower frequency of the THz spectrum is observed in the presence of a biased *** agrees well with theoretical predictions.

关键词： field. spectrum opposite

Determining the soil-water retention curve using mercury intrusion porosimetry test in consideration of soil volume change

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Journal of Rock Mechanics and Geotechnical Engineering 2020年第5期12卷 1070-1079页

作者： Wen-Jing Sun Yu-Jun Cui State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China Department of Civil Engineering School of Mechanics and Engineering ScienceShanghai UniversityShanghai200444China Ecole des Ponts ParisTech Laboratoire Navier/CERMES6e8 avenue Blaise PascalCitéDescartesChamps-sur-MarneMarne-la-Vallée cedex 277455France Institute for the Conservation of Cultural Heritage Shanghai200444China

It is well-known that a close link exists between soil-water retention curve(SWRC)and pore size distribution(PSD).Theoretically,mercury intrusion porosimetry(MIP)test simulates a soil drying path and the test results can be used to deduce the SWRC(termed SWRCMIP).However,SWRCMIP does not include the effect of volume change,compared with the conventional SWRC that is directly determined by suction measurement or suction control *** deformable soils,there is a significant difference between conventional SWRC and *** this study,drying test was carried out on a reconstituted silty soil,and the volume change,suction,and PSD were measured on samples with different water *** change in the deduced SWRCMIP and its relationship with the conventional SWRC were *** results showed that the volume change of soil is the main reason accounting for the difference between conventional SWRC and *** on the test results,a transformation model was then proposed for conventional SWRC and SWRCMIP,for which the soil state with no volume change is taken as a *** between the experimental and predicted SWRCs showed that the proposed model can well consider the influence of soil volume change on its water retention property.

关键词： Soil-water retention curve(SWRC) Mercury intrusion porosimetry(MIP) Pore size distribution(PSD) Deformable soils

Scattering of ultrashort laser pulses on plasmons in a Maxwellian plasma

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Matter and Radiation at Extremes 2021年第5期6卷 31-38页

作者： V.A.Astapenko F.B.Rosmej E.S.Khramov Moscow Institute of Physics and Technology(national Research University) Institutskii per.9141701 DolgoprudnyRussia Sorbonne University Faculty of Science and EngineeringUMR 7605Case 1284 Place JussieuF-75252 Paris Cedex 05France LULI Ecole PolytechniqueCEACNRSLaboratoire pour l’Utilisation des Lasers IntensesPhysique Atomique dans les Plasmas DensesF-91128 PalaiseauFrance national Research Nuclear University MEPhI(Moscow Engineering Physics Institute) Kashirskoe sh.31115409 MoscowRussia

On the basis of equations obtained in the framework of second-order quantum-mechanical perturbation theory,the standard approach to the calculation of scattering radiation probability is extended to the case of ultrashort laser *** the mechanism of the appearance of plasmon peaks in the spectrum of the plasma form factor for different parameters of the *** the case in which scattering on plasmons dominates over scattering on electron density fluctuations caused by chaotic thermal motion,we derive analytical expressions describing the scattering probability of ultrashort laser pulses on *** with this,we obtain a simple expression connecting the frequency of scattered radiation and the energy transmitted from the incident pulse to plasmon,and vice *** considering the scattering probability,our emphasis is on the dependence on the pulse *** in detail the trends of this dependence for various relations between pulse carrier frequency and plasmon energy.

关键词： scattering ultrashort laser