Search Results - "Testelin, Christophe"
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Exciton-phonon coupling in a CsPbBr3 single nanocrystal
Published in Applied physics letters (12-02-2018)“…We have performed micro-photoluminescence measurements on a single CsPbBr3 nanocrystal (NC) with a size comparable to the Bohr diameter (7 nm). When the NC has…”
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Giant Fine Structure Splitting of the Bright Exciton in a Bulk MAPbBr3 Single Crystal
Published in Nano letters (09-10-2019)“…Exciton fine structure splitting in semiconductors reflects the underlying symmetry of the crystal and quantum confinement. Because the latter factor strongly…”
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High Curie temperature ferromagnetic structures of (Sb2Te3)1−x(MnSb2Te4)x with x = 0.7–0.8
Published in Scientific reports (06-05-2023)“…Magnetic topological materials are promising for realizing novel quantum physical phenomena. Among these, bulk Mn-rich MnSb 2 Te 4 is ferromagnetic due to Mn…”
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Structural and magnetic properties of molecular beam epitaxy (MnSb2Te4)x(Sb2Te3)1−x topological materials with exceedingly high Curie temperature
Published in APL materials (01-07-2024)“…Tuning the properties of magnetic topological materials is of interest to realize exotic physical phenomena, new quantum phases and quasiparticles, and…”
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5
Dielectric Confinement and Exciton Fine Structure in Lead Halide Perovskite Nanoplatelets
Published in Nanomaterials (Basel, Switzerland) (13-11-2021)“…Owing to their flexible chemical synthesis and the ability to shape nanostructures, lead halide perovskites have emerged as high potential materials for…”
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Unexpected Anisotropy of the Electron and Hole Landé g-Factors in Perovskite CH3NH3PbI3 Polycrystalline Films
Published in Nanomaterials (Basel, Switzerland) (19-04-2022)“…In this work, we studied, at low temperature, the coherent evolution of the localized electron and hole spins in a polycrystalline film of CH3NH3PbI3 (MAPI) by…”
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Hole–spin dephasing time associated with hyperfine interaction in quantum dots
Published in Physical review. B, Condensed matter and materials physics (01-05-2009)“…The spin interaction of a hole confined in a quantum dot with the surrounding nuclei is described in terms of an effective magnetic field. We show that, in…”
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Exciton Fine Structure of CsPbCl 3 Nanocrystals: An Interplay of Electron-Hole Exchange Interaction, Crystal Structure, Shape Anisotropy, and Dielectric Mismatch
Published in ACS nano (11-07-2023)“…In the semiconducting perovskite materials family, the cesium-lead-chloride compound (CsPbCl ) supports robust excitons characterized by a blue-shifted…”
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Energy Tuning of Electronic Spin Coherent Evolution in Methylammonium Lead Iodide Perovskites
Published in The journal of physical chemistry letters (02-09-2021)“…We investigated the coherent evolution of the electronic spin at low temperature in high-quality CH3NH3PbI3 polycrystalline films by picosecond-resolved…”
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10
Exciton Fine Structure of CsPbCl3 Nanocrystals: An Interplay of Electron–Hole Exchange Interaction, Crystal Structure, Shape Anisotropy, and Dielectric Mismatch
Published in ACS nano (11-07-2023)“…In the semiconducting perovskite materials family, the cesium-lead-chloride compound (CsPbCl3) supports robust excitons characterized by a blue-shifted…”
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11
Phonon modes and exciton-phonon interactions in CsPbCl3 single nanocrystals
Published in Physica. E, Low-dimensional systems & nanostructures (01-07-2023)“…Micro-photoluminescence measurements have been performed on single cubic-shaped CsPbCl3 nanocrystals (NCs) with side lengths of nearly twice the Bohr diameter,…”
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12
Designer Topological Insulator with Enhanced Gap and Suppressed Bulk Conduction in Bi2Se3/Sb2Te3 Ultrashort-Period Superlattices
Published in Nano letters (13-05-2020)“…A novel approach to suppress bulk conductance in three-dimensional (3D) topological insulators (TIs) using short-period superlattices (SLs) of two TIs is…”
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13
Exciton fine structure of a single highly anisotropic CsPbBr 3 nanocrystal
Published in EPJ Web of conferences (2023)“…We measured the photoluminescence (PL) of single CsPbBr3 nanocrystals (NCs) that have a highly anisotropic shape and orthorhombic crystal phase. As the…”
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14
Emission State Structure and Linewidth Broadening Mechanisms in Type-II CdSe/CdTe Core–Crown Nanoplatelets: A Combined Theoretical–Single Nanocrystal Optical Study
Published in Journal of physical chemistry. C (06-08-2020)“…Type-II heterostructures are key elementary components in optoelectronic, photovoltaic, and quantum devices. The staggered band alignment of materials leads to…”
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Designer Topological Insulator with Enhanced Gap and Suppressed Bulk Conduction in Bi 2 Se 3 /Sb 2 Te 3 Ultrashort-Period Superlattices
Published in Nano letters (13-05-2020)“…A novel approach to suppress bulk conductance in three-dimensional (3D) topological insulators (TIs) using short-period superlattices (SLs) of two TIs is…”
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Compositional Control and Optimization of Molecular Beam Epitaxial Growth of (Sb2Te3)1–x (MnSb2Te4) x Magnetic Topological Insulators
Published in Crystal growth & design (04-05-2022)“…Magnetic topological insulators such as MnBi2Te4 and MnSb2Te4 are promising hosts of novel physical phenomena such as the quantum anomalous Hall effect and…”
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Fine Structure and Spin Dynamics of Linearly Polarized Indirect Excitons in Two-Dimensional CdSe/CdTe Colloidal Heterostructures
Published in ACS nano (24-09-2019)“…Heterostructured two-dimensional colloidal nanoplatelets are a class of material that has attracted great interest for optoelectronic applications due to their…”
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18
Exciton fine structure of a single highly anisotropic CsPbBr3 nanocrystal
Published in EPJ Web of conferences (01-01-2023)“…We measured the photoluminescence (PL) of single CsPbBr3 nanocrystals (NCs) that have a highly anisotropic shape and orthorhombic crystal phase. As the…”
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Spin Coherence and Relaxation Dynamics of Localized Electrons and Holes in FAPbI 3 Films
Published in ACS photonics (17-07-2024)Get full text
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20
Hole-nuclear spin interaction in quantum dots
Published in Physical review letters (10-04-2009)“…We have measured the carrier spin dynamics in p-doped InAs/GaAs quantum dots by pump-probe and time-resolved photoluminescence experiments. We obtained…”
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