Charles Guillemard
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View article: Intrinsic Magnetism and Field‐Driven Spin Alignment in NiI<sub>2</sub> Revealed by X‐ray Magnetic Spectroscopy
Intrinsic Magnetism and Field‐Driven Spin Alignment in NiI<sub>2</sub> Revealed by X‐ray Magnetic Spectroscopy Open
This study investigates the intrinsic magnetism and field‐driven spin alignment in NiI 2 using X‐ray absorption spectroscopy and X‐ray magnetic circular dichroism (XMCD). NiI 2 , a van der Waals material, exhibits helimagnetic and type‐II …
View article: Unusually High Occupation of Co 3d State in Magnetic Weyl Semimetal Co<sub>3</sub>Sn<sub>2</sub>S<sub>2</sub>
Unusually High Occupation of Co 3d State in Magnetic Weyl Semimetal Co<sub>3</sub>Sn<sub>2</sub>S<sub>2</sub> Open
The physical properties of magnetic topological materials are strongly influenced by their nontrivial band topology coupled with the magnetic structure. Co3Sn2S2 is a ferromagnetic kagome Weyl semimetal dis…
View article: Covalency <i>versus</i> magnetic axiality in Nd molecular magnets: Nd-photoluminescence, strong ligand-field, and unprecedented nephelauxetic effect in fullerenes NdM <sub>2</sub> N@C <sub>80</sub> (M = Sc, Lu, Y)
Covalency <i>versus</i> magnetic axiality in Nd molecular magnets: Nd-photoluminescence, strong ligand-field, and unprecedented nephelauxetic effect in fullerenes NdM <sub>2</sub> N@C <sub>80</sub> (M = Sc, Lu, Y) Open
Nd-luminescence in NdM 2 N@C 80 (M = Sc, Lu, Y) reveals the relationship between strain, ligand-field splitting, nephelauxetic effect, and magnetic axiality.
View article: Engineering of perpendicular magnetic anisotropy in half-metallic magnetic Heusler epitaxial thin films
Engineering of perpendicular magnetic anisotropy in half-metallic magnetic Heusler epitaxial thin films Open
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View article: Paramagnetic Nd sublattice and thickness-dependent ferromagnetism in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Nd</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>NiMnO</mml:mi><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math> double perovskite thin films
Paramagnetic Nd sublattice and thickness-dependent ferromagnetism in double perovskite thin films Open
We investigate ferromagnetic and insulating thin films of the B-site ordered double perovskite Nd2NiMnO6 (NNMO) grown by radio frequency off-axis magnetron sputtering. The films grow epitaxially strained on a selectio…
View article: Ultrafast demagnetization of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Co</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mi>Mn</mml:mi><mml:msub><mml:mi>Si</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mtext>–</mml:mtext><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>Al</mml:mi><mml:mi>x</mml:mi></mml:msub></mml:mrow></mml:math> Heusler compounds using terahertz and infrared light
Ultrafast demagnetization of Heusler compounds using terahertz and infrared light Open
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View article: Large‐Area Synthesis of Ferromagnetic Fe<sub>5−</sub><i><sub>x</sub></i>GeTe<sub>2</sub>/Graphene van der Waals Heterostructures with Curie Temperature above Room Temperature
Large‐Area Synthesis of Ferromagnetic Fe<sub>5−</sub><i><sub>x</sub></i>GeTe<sub>2</sub>/Graphene van der Waals Heterostructures with Curie Temperature above Room Temperature Open
Van der Waals (vdW) heterostructures combining layered ferromagnets and other 2D crystals are promising building blocks for the realization of ultracompact devices with integrated magnetic, electronic, and optical functionalities. Their im…
View article: Reversal of Anomalous Hall Effect and Octahedral Tilting in SrRuO<sub>3</sub> Thin Films via Hydrogen Spillover (Adv. Mater. 3/2023)
Reversal of Anomalous Hall Effect and Octahedral Tilting in SrRuO<sub>3</sub> Thin Films via Hydrogen Spillover (Adv. Mater. 3/2023) Open
SrRuO3 Thin Films The perovskite SrRuO3 is a prototypical itinerant ferromagnet that has drawn considerable attention due to its strongly correlated physical properties. In article number 2207246, Hyeon Han, Stuart S. P. Parkin, and co-wor…
View article: Reversal of Anomalous Hall Effect and Octahedral Tilting in SrRuO<sub>3</sub> Thin Films via Hydrogen Spillover
Reversal of Anomalous Hall Effect and Octahedral Tilting in SrRuO<sub>3</sub> Thin Films via Hydrogen Spillover Open
The perovskite SrRuO 3 (SRO) is a strongly correlated oxide whose physical and structural properties are strongly intertwined. Notably, SRO is an itinerant ferromagnet that exhibits a large anomalous Hall effect (AHE) whose sign can be rea…
View article: Top‐Layer Engineering Reshapes Charge Transfer at Polar Oxide Interfaces
Top‐Layer Engineering Reshapes Charge Transfer at Polar Oxide Interfaces Open
Charge‐transfer phenomena at heterointerfaces are a promising pathway to engineer functionalities absent in bulk materials but can also lead to degraded properties in ultrathin films. Mitigating such undesired effects with an interlayer re…
View article: Control of Oxygen Vacancy Ordering in Brownmillerite Thin Films via Ionic Liquid Gating
Control of Oxygen Vacancy Ordering in Brownmillerite Thin Films via Ionic Liquid Gating Open
Oxygen defects and their atomic arrangements play a significant role in the physical properties of many transition metal oxides. The exemplary perovskite SrCoO3-δ (P-SCO) is metallic and ferromagnetic. However, its daught…
View article: Unveiling transport properties of Co2MnSi Heusler epitaxial thin films with ultra-low magnetic damping
Unveiling transport properties of Co2MnSi Heusler epitaxial thin films with ultra-low magnetic damping Open
View article: Large-area van der Waals epitaxy and magnetic characterization of Fe<sub>3</sub>GeTe<sub>2</sub> films on graphene
Large-area van der Waals epitaxy and magnetic characterization of Fe<sub>3</sub>GeTe<sub>2</sub> films on graphene Open
Scalable fabrication of magnetic 2D materials and heterostructures constitutes a crucial step for scaling down current spintronic devices and the development of novel spintronic applications. Here, we report on van der Waals (vdW) epitaxy …
View article: Nanocontact vortex oscillators based on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Co</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mi>MnGe</mml:mi></mml:mrow></mml:math> pseudo spin valves
Nanocontact vortex oscillators based on pseudo spin valves Open
We present an experimental study of vortex dynamics in magnetic nanocontacts\nbased on pseudo spin valves comprising the Co$_2$MnGe Heusler compound. The\nfilms were grown by molecular beam epitaxy, where precise stoichiometry control\nand…
View article: Large-area van der Waals epitaxy and magnetic characterization of Fe$_3$GeTe$_2$ films on graphene
Large-area van der Waals epitaxy and magnetic characterization of Fe$_3$GeTe$_2$ films on graphene Open
Scalable fabrication of magnetic 2D materials and heterostructures constitutes a crucial step for scaling down current spintronic devices and the development of novel spintronic applications. Here, we report on van der Waals (vdW) epitaxy …
View article: Issues in growing Heusler compounds in thin films for spintronic applications
Issues in growing Heusler compounds in thin films for spintronic applications Open
Heusler magnetic alloys offer a wide variety of electronic properties very promising for spintronics and magnonics. Some alloys exhibit a spin gap in their band structure at the Fermi energy, the so-called half-metal magnetic (HMM) behavio…
View article: Engineering Co<sub>2</sub>MnAl<i><sub>x</sub></i>Si<sub>1−</sub><i><sub>x</sub></i> Heusler Compounds as a Model System to Correlate Spin Polarization, Intrinsic Gilbert Damping, and Ultrafast Demagnetization
Engineering Co<sub>2</sub>MnAl<i><sub>x</sub></i>Si<sub>1−</sub><i><sub>x</sub></i> Heusler Compounds as a Model System to Correlate Spin Polarization, Intrinsic Gilbert Damping, and Ultrafast Demagnetization Open
Engineering of magnetic materials for developing better spintronic applications relies on the control of two key parameters: the spin polarization and the Gilbert damping, responsible for the spin angular momentum dissipation. Both of them…
View article: Engineering Co$_2$MnAl$_x$Si$_{1-x}$ Heusler compounds as a model system to correlate spin polarization, intrinsic Gilbert damping and ultrafast demagnetization
Engineering Co$_2$MnAl$_x$Si$_{1-x}$ Heusler compounds as a model system to correlate spin polarization, intrinsic Gilbert damping and ultrafast demagnetization Open
Engineering of magnetic materials for developing better spintronic applications relies on the control of two key parameters: the spin polarization and the Gilbert damping responsible for the spin angular momentum dissipation. Both of them …
View article: Polycrystalline Co2Mn-based Heusler thin films with high spin polarization and low magnetic damping
Polycrystalline Co2Mn-based Heusler thin films with high spin polarization and low magnetic damping Open
Spin-polarization and magnetic damping are measured for several polycrystalline films with each of them being made of a different single Co2Mn-based Heusler compound. As several epitaxial Co2Mn-based Heusler compounds are shown to be half-…
View article: Ultra-low magnetic damping in Co 2 Mn-based Heusler compounds: promising materials for spintronic
Ultra-low magnetic damping in Co 2 Mn-based Heusler compounds: promising materials for spintronic Open
The prediction of ultra-low magnetic damping in Co 2 MnZ Heusler half-metal thin-film magnets is explored in this study and the damping response is shown to be linked to the underlying electronic properties. By substituting the Z elements …
View article: Co$_2$ Mn-based Heusler compounds for spintronics: Chemical order and interplay between the magnetic damping and the underlying electronic structure
Co$_2$ Mn-based Heusler compounds for spintronics: Chemical order and interplay between the magnetic damping and the underlying electronic structure Open
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View article: Cobalt-based Heusler alloys for spintronics: Half-metallicity and ultra-low damping investigation of the Co$_2$ MnX series
Cobalt-based Heusler alloys for spintronics: Half-metallicity and ultra-low damping investigation of the Co$_2$ MnX series Open
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View article: Epitaxial cobalt-based Heusler alloys for spintronic applications: Elaboration, structural and magnetic investigation
Epitaxial cobalt-based Heusler alloys for spintronic applications: Elaboration, structural and magnetic investigation Open
International audience