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  1. Article ; Online: Control of light emission of quantum emitters coupled to silicon nanoantenna using cylindrical vector beams.

    Montagnac, Martin / Brûlé, Yoann / Cuche, Aurélien / Poumirol, Jean-Marie / Weber, Sébastien J / Müller, Jonas / Larrieu, Guilhem / Larrey, Vincent / Fournel, Franck / Boisron, Olivier / Masenelli, Bruno / Colas des Francs, Gérard / Agez, Gonzague / Paillard, Vincent

    Light, science & applications

    2023  Volume 12, Issue 1, Page(s) 239

    Abstract: Light emission of europium ( ... ...

    Abstract Light emission of europium (Eu
    Language English
    Publishing date 2023-09-19
    Publishing country England
    Document type Journal Article
    ZDB-ID 2662628-7
    ISSN 2047-7538 ; 2047-7538
    ISSN (online) 2047-7538
    ISSN 2047-7538
    DOI 10.1038/s41377-023-01229-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Hyperdoped Si nanocrystals embedded in silica for infrared plasmonics.

    Zhang, Meiling / Poumirol, Jean-Marie / Chery, Nicolas / Rinnert, Hervé / Giba, Alaa E / Demoulin, Rémi / Talbot, Etienne / Cristiano, Fuccio / Hungria, Teresa / Paillard, Vincent / Gourbilleau, Fabrice / Bonafos, Caroline

    Nanoscale

    2023  Volume 15, Issue 16, Page(s) 7438–7449

    Abstract: We present the experimental realization of plasmonic hyperdoped Si nanocrystals embedded in ... ...

    Abstract We present the experimental realization of plasmonic hyperdoped Si nanocrystals embedded in silica
    Language English
    Publishing date 2023-04-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 2515664-0
    ISSN 2040-3372 ; 2040-3364
    ISSN (online) 2040-3372
    ISSN 2040-3364
    DOI 10.1039/d3nr00035d
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Kapitza-resistance-like exciton dynamics in atomically flat MoSe

    Lamsaadi, Hassan / Beret, Dorian / Paradisanos, Ioannis / Renucci, Pierre / Lagarde, Delphine / Marie, Xavier / Urbaszek, Bernhard / Gan, Ziyang / George, Antony / Watanabe, Kenji / Taniguchi, Takashi / Turchanin, Andrey / Lombez, Laurent / Combe, Nicolas / Paillard, Vincent / Poumirol, Jean-Marie

    Nature communications

    2023  Volume 14, Issue 1, Page(s) 5881

    Abstract: Being able to control the neutral excitonic flux is a mandatory step for the development of future room-temperature two-dimensional excitonic devices. Semiconducting Monolayer Transition Metal Dichalcogenides (TMD-ML) with extremely robust and mobile ... ...

    Abstract Being able to control the neutral excitonic flux is a mandatory step for the development of future room-temperature two-dimensional excitonic devices. Semiconducting Monolayer Transition Metal Dichalcogenides (TMD-ML) with extremely robust and mobile excitons are highly attractive in this regard. However, generating an efficient and controlled exciton transport over long distances is a very challenging task. Here we demonstrate that an atomically sharp TMD-ML lateral heterostructure (MoSe
    Language English
    Publishing date 2023-09-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-023-41538-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Kapitza-resistance-like exciton dynamics in atomically flat MoSe2-WSe2 lateral heterojunction

    Hassan Lamsaadi / Dorian Beret / Ioannis Paradisanos / Pierre Renucci / Delphine Lagarde / Xavier Marie / Bernhard Urbaszek / Ziyang Gan / Antony George / Kenji Watanabe / Takashi Taniguchi / Andrey Turchanin / Laurent Lombez / Nicolas Combe / Vincent Paillard / Jean-Marie Poumirol

    Nature Communications, Vol 14, Iss 1, Pp 1-

    2023  Volume 8

    Abstract: Abstract Being able to control the neutral excitonic flux is a mandatory step for the development of future room-temperature two-dimensional excitonic devices. Semiconducting Monolayer Transition Metal Dichalcogenides (TMD-ML) with extremely robust and ... ...

    Abstract Abstract Being able to control the neutral excitonic flux is a mandatory step for the development of future room-temperature two-dimensional excitonic devices. Semiconducting Monolayer Transition Metal Dichalcogenides (TMD-ML) with extremely robust and mobile excitons are highly attractive in this regard. However, generating an efficient and controlled exciton transport over long distances is a very challenging task. Here we demonstrate that an atomically sharp TMD-ML lateral heterostructure (MoSe2-WSe2) transforms the isotropic exciton diffusion into a unidirectional excitonic flow through the junction. Using tip-enhanced photoluminescence spectroscopy (TEPL) and a modified exciton transfer model, we show a discontinuity of the exciton density distribution on each side of the interface. We introduce the concept of exciton Kapitza resistance, by analogy with the interfacial thermal resistance referred to as Kapitza resistance. By comparing different heterostructures with or without top hexagonal boron nitride (hBN) layer, we deduce that the transport properties can be controlled, over distances far greater than the junction width, by the exciton density through near-field engineering and/or laser power density. This work provides a new approach for controlling the neutral exciton flow, which is key toward the conception of excitonic devices.
    Keywords Science ; Q
    Subject code 530
    Language English
    Publishing date 2023-09-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Book ; Online: Probing the optical near-field interaction of Mie nanoresonators with atomically thin semiconductors

    Estrada-Real, Ana / Paradisanos, Ioannis / Wiecha, Peter R. / Poumirol, Jean-Marie / Cuche, Aurelien / Agez, Gonzague / Lagarde, Delphine / Marie, Xavier / Larrey, Vincent / Müller, Jonas / Larrieu, Guilhem / Paillard, Vincent / Urbaszek, Bernhard

    2022  

    Abstract: Optical Mie resonators based on silicon nanostructures allow tuning of light-matter-interaction with advanced design concepts based on CMOS compatible nanofabrication. Optically active materials such as transition-metal dichalcogenide (TMD) monolayers ... ...

    Abstract Optical Mie resonators based on silicon nanostructures allow tuning of light-matter-interaction with advanced design concepts based on CMOS compatible nanofabrication. Optically active materials such as transition-metal dichalcogenide (TMD) monolayers can be placed in the near-field region of such Mie resonators. Here, we experimentally demonstrate and verify by numerical simulations coupling between a MoSe2 monolayer and the near-field of dielectric nanoresonators. Through a comparison of dark-field (DF) scattering spectroscopy and photoluminescence excitation experiments (PLE), we show that the MoSe2 absorption can be enhanced via the near-field of a nanoresonator. We demonstrate spectral tuning of the absorption via the geometry of individual Mie resonators. We show that we indeed access the optical near-field of the nanoresonators, by measuring a spectral shift between the typical near-field resonances in PLE compared to the far-field resonances in DF scattering. Our results prove that using MoSe2 as an active probe allows accessing the optical near-field above photonic nanostructures, without the requirement of highly complex near-field microscopy equipment.

    Comment: Main paper and supplement
    Keywords Physics - Optics ; Condensed Matter - Materials Science
    Subject code 535
    Publishing date 2022-10-25
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: High sensitivity variable-temperature infrared nanoscopy of conducting oxide interfaces.

    Luo, Weiwei / Boselli, Margherita / Poumirol, Jean-Marie / Ardizzone, Ivan / Teyssier, Jérémie / van der Marel, Dirk / Gariglio, Stefano / Triscone, Jean-Marc / Kuzmenko, Alexey B

    Nature communications

    2019  Volume 10, Issue 1, Page(s) 2774

    Abstract: Probing the local transport properties of two-dimensional electron systems (2DES) confined at buried interfaces requires a non-invasive technique with a high spatial resolution operating in a broad temperature range. In this paper, we investigate the ... ...

    Abstract Probing the local transport properties of two-dimensional electron systems (2DES) confined at buried interfaces requires a non-invasive technique with a high spatial resolution operating in a broad temperature range. In this paper, we investigate the scattering-type scanning near field optical microscopy as a tool for studying the conducting LaAlO
    Language English
    Publishing date 2019-06-24
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-019-10672-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: High sensitivity variable-temperature infrared nanoscopy of conducting oxide interfaces

    Weiwei Luo / Margherita Boselli / Jean-Marie Poumirol / Ivan Ardizzone / Jérémie Teyssier / Dirk van der Marel / Stefano Gariglio / Jean-Marc Triscone / Alexey B. Kuzmenko

    Nature Communications, Vol 10, Iss 1, Pp 1-

    2019  Volume 8

    Abstract: Two-dimensional electron systems in oxide heterostructures have complex interactions that, once well understood, are expected to result in a powerful platform for electronic devices. Luo et al. show how near-field optical microscopy can perform high- ... ...

    Abstract Two-dimensional electron systems in oxide heterostructures have complex interactions that, once well understood, are expected to result in a powerful platform for electronic devices. Luo et al. show how near-field optical microscopy can perform high-resolution imaging of conducting regions in LaAlO3/SrTiO3 interfaces.
    Keywords Science ; Q
    Language English
    Publishing date 2019-06-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: High sensitivity variable-temperature infrared nanoscopy of conducting oxide interfaces

    Weiwei Luo / Margherita Boselli / Jean-Marie Poumirol / Ivan Ardizzone / Jérémie Teyssier / Dirk van der Marel / Stefano Gariglio / Jean-Marc Triscone / Alexey B. Kuzmenko

    Nature Communications, Vol 10, Iss 1, Pp 1-

    2019  Volume 8

    Abstract: Two-dimensional electron systems in oxide heterostructures have complex interactions that, once well understood, are expected to result in a powerful platform for electronic devices. Luo et al. show how near-field optical microscopy can perform high- ... ...

    Abstract Two-dimensional electron systems in oxide heterostructures have complex interactions that, once well understood, are expected to result in a powerful platform for electronic devices. Luo et al. show how near-field optical microscopy can perform high-resolution imaging of conducting regions in LaAlO3/SrTiO3 interfaces.
    Keywords Science ; Q
    Language English
    Publishing date 2019-06-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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  9. Book ; Online: Infrared nanoplasmonic properties of hyperdoped embedded Si nanocrystals in the few electrons regime

    Zhang, Meiling / Poumirol, Jean-Marie / Chery, Nicolas / Majorel, Clment / Demoulin, Rémi / Talbot, Etienne / Rinnert, Hervé / Girard, Christian / Cristiano, Filadelfo / Wiecha, Peter R. / Hungria, Teresa / Paillard, Vincent / Arbouet, Arnaud / Pécassou, Béatrice / Gourbilleau, Fabrice / Bonafos, Caroline

    2022  

    Abstract: Using Localized Surface Plasmon Resonance (LSPR) as an optical probe we demonstrate the presence of free carriers in phosphorus doped silicon nanocrystals (SiNCs) embedded in a silica matrix. In small SiNCs, with radius ranging from 2.6 to 5.5 nm, the ... ...

    Abstract Using Localized Surface Plasmon Resonance (LSPR) as an optical probe we demonstrate the presence of free carriers in phosphorus doped silicon nanocrystals (SiNCs) embedded in a silica matrix. In small SiNCs, with radius ranging from 2.6 to 5.5 nm, the infrared spectroscopy study coupled to numerical simulations allows us to determine the number of electrically active phosphorus atoms with a precision of a few atoms. We demonstrate that LSP resonances can be supported with only about 10 free electrons per nanocrystal, confirming theoretical predictions and probing the limit of the collective nature of plasmons. We reveal a phenomenon, unique to embedded nanocrystals, with the appearance of an avoided crossing behavior linked to the hybridization between the localized surface plasmon in the doped nanocrystals and the silica matrix phonon modes. Finally, a careful analysis of the scattering time dependence versus carrier density in the small size regime allows us to detect the appearance of a new scattering process at high dopant concentration.
    Keywords Physics - Optics ; Condensed Matter - Materials Science
    Subject code 535
    Publishing date 2022-04-27
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: Electrically controlled terahertz magneto-optical phenomena in continuous and patterned graphene.

    Poumirol, Jean-Marie / Liu, Peter Q / Slipchenko, Tetiana M / Nikitin, Alexey Y / Martin-Moreno, Luis / Faist, Jérôme / Kuzmenko, Alexey B

    Nature communications

    2017  Volume 8, Page(s) 14626

    Abstract: The magnetic circular dichroism and the Faraday rotation are the fundamental phenomena of great practical importance arising from the breaking of the time reversal symmetry by a magnetic field. In most materials, the strength and the sign of these ... ...

    Abstract The magnetic circular dichroism and the Faraday rotation are the fundamental phenomena of great practical importance arising from the breaking of the time reversal symmetry by a magnetic field. In most materials, the strength and the sign of these effects can be only controlled by the field value and its orientation. Furthermore, the terahertz range is lacking materials having the ability to affect the polarization state of the light in a non-reciprocal manner. Here we demonstrate, using broadband terahertz magneto-electro-optical spectroscopy, that in graphene both the magnetic circular dichroism and the Faraday rotation can be modulated in intensity, tuned in frequency and, importantly, inverted using only electrostatic doping at a fixed magnetic field. In addition, we observe strong magneto-plasmonic resonances in a patterned array of graphene antidots, which potentially allows exploiting these magneto-optical phenomena in a broad THz range.
    Language English
    Publishing date 2017-03-07
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 2041-1723
    ISSN (online) 2041-1723
    DOI 10.1038/ncomms14626
    Database MEDical Literature Analysis and Retrieval System OnLINE

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