Dr. Mathieu Munsch Profile

Dr. Mathieu Munsch

at Qnami AG

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Publications (6)

Proceedings Article | 1 August 2021 Presentation

Quantitative imaging of antiferromagnetic spin cycloidal textures on strain engineered BiFeO3 thin films with a scanning nitrogen-vacancy magnetometer

Hai Zhong, Johanna Fischer, Angela Haykal, Aurore Finco, Alexander Stark, Felipe Favaro de Oliveira, Patrick Maletinsky, Mathieu Munsch, Karim Bouzehouane, Stéphane Fusil, Vincent Jacques, Vincent Garcia

Proceedings Volume 11805, 118050U (2021) https://doi.org/10.1117/12.2600960

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Antiferromagnetic thin films attract significant interest for future low-power spintronic devices [1]. Multiferroics, such as bismuth ferrite BiFeO3, in which antiferromagnetism and ferroelectricity coexist at room temperature, appears as a unique platform for spintronic [2] and magnonic devices [3]. The nanoscale structure of its ferroelectric domains has been widely investigated with piezoresponse force microscopy (PFM), revealing unique domain structures and domain wall functionalities [4]. However, the nanoscale magnetic textures present in BiFeO3 and their potential for spin-based technology remain concealed. In this report, we present two different antiferromagnetic spin textures in multiferroic BiFeO3 thin films with different epitaxial strains, using a commercial non-invasive scanning Nitrogen-Vacancy (NV) magnetometer based on a single NV defect in diamond, with a calibrated NV flying height of 60 nm and a proven DC field sensitivity of 1 T/Hz. Two BiFeO3 samples were grown on DyScO3 (110) and SmScO3 (110) substrates (later mentioned as BFO/DSO and BFO/SSO, respectively) using pulsed laser deposition. The striped ferroelectric domains in both samples are first observed by the in-plane PFM. The scanning NV magnetometry (SNVM) confirms the existence of the spin cycloid texture, with zig-zag wiggling angles of 90 and 127, and propagation wavelength of DSO=64 nm andSSO=103 nm, respectively. At the local scale, the combination of PFM and SNVM allows to identify the relative orientation of the ferroelectric polarization and cycloid propagation directions on both sides of a domain wall. For the BFO/DSO sample, the 90-degree in-plane rotation of the ferroelectric polarization imprints the 90-degree in-plane rotation of the cycloidal propagation direction along k1=[-1 1 0], corresponding to the type-I cycloid. On the contrary, in the BFO/SSO sample, the propagation vectors are found to be along k1'=[-2 1 1] and k2'= [1 -2 1] directions in the neighboring domains separated by the 71 domain wall. It is worth to mentioned that in the previous report [5], BFO/SSO, prepared in another growth chamber, showed G-type antiferromagnetic textures, compared to the observed type-II cycloid here. Our results here shed the light on future potential for reconfigurable nanoscale spin textures on multiferroic systems by strain engineering.

Proceedings Article | 28 May 2013 Paper

The photonic nanowire: an emerging platform for highly efficient single-photon sources for quantum information applications

Niels Gregersen, Mathieu Munsch, Nitin Malik, Joël Bleuse, Emmanuel Dupuy, Adrien Delga, Jesper Mørk, Jean-Michel Gérard, Julien Claudon

Proceedings Volume 8749, 87490W (2013) https://doi.org/10.1117/12.2020622

KEYWORDS: Surface plasmons, Mirrors, Quantum information, Quantum efficiency, Gaussian beams, Interfaces, Metals, Semiconductors, Nanowires, Photonic nanostructures

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Proceedings Article | 14 March 2013 Paper

A photonic nanowire trumpet for interfacing a quantum dot and a Gaussian free-space mode

Niels Gregersen, Mathieu Munsch, Nitin Malik, Joël Bleuse, Emmanuel Dupuy, Adrien Delga, Jesper Mørk, Jean-Michel Gérard, Julien Claudon

Proceedings Volume 8619, 86190Y (2013) https://doi.org/10.1117/12.2004449

KEYWORDS: Quantum dots, Gaussian beams, Surface plasmons, Mirrors, Quantum efficiency, Interfaces, Semiconductors, Gallium arsenide, Nanowires, Photonic nanostructures

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Proceedings Article | 14 March 2013 Paper

Photonic wires and trumpets for ultrabright single photon sources

Jean-Michel Gérard, Julien Claudon, Joël Bleuse, Matthieu Munsch, Nitin Malik, Niels Gregersen, Jesper Mørk

Proceedings Volume 8619, 861905 (2013) https://doi.org/10.1117/12.2008906

KEYWORDS: Single photon, Mirrors, Gallium arsenide, Indium arsenide, Photonic crystals, Waveguides, Silica, Dielectrics, Quantum optics, Excitons

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Proceedings Article | 21 January 2012 Paper

Quantum optics with quantum dots in photonic nanowires

Julien Claudon, Matthieu Munsch, Joël Bleuse, Philippe Lalanne, Niels Gregersen, Jean-Michel Gérard

Proceedings Volume 8268, 82681J (2012) https://doi.org/10.1117/12.904739

KEYWORDS: Gallium arsenide, Single photon, Indium arsenide, Quantum dots, Mirrors, Excitons, Quantum optics, Dielectric polarization, Photonic crystals, Nanowires

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Proceedings Article | 8 September 2011 Paper

Quantum-dot based nonlinear source of THz radiation

A. Andronico, J. Claudon, M. Munsch, I. Favero, S. Ducci, J. Gérard, G. Leo

Proceedings Volume 8119, 81190C (2011) https://doi.org/10.1117/12.901202

KEYWORDS: Terahertz radiation, Nonlinear optics, Gallium arsenide, Optical microcavities, Quantum dots, Quantum cascade lasers, Spectroscopy, Nonlinear dynamics, Phase matching

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Showing 5 of 6 publications

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