Charles Guillemard
2024
Realization of Fully High‐Spin State and Strong Ferromagnetism in LaCoO3 Monolayer
Junhua Liu, Liang Si, Qinghua Zhang, Xiao Wang, Jessica Freese, Grant Harris, Mei Wu, Xinxin Zhang, Ting Lin, Ronny Sutarto, Javier Herrero-Martín, Charles Guillemard, Manuel Valvidares, Lin Li, Xiaofei Gao, Yaoyao Ji, Zhixiong Deng, Yuhao Hong, Long Wei, Yulin Gan, Lingfei Wang, Guanglei Cheng, Peng Gao, Lin Gu, Jiandi Zhang, Zhiwei Hu, Liu Hao Tjeng, Robert Green, Kai Chen, Zhaoliang Liao
Advanced Functional Materials (2024)10.1002/adfm.202401859 
Covalency versus magnetic axiality in Nd molecular magnets: Nd-photoluminescence, strong ligand-field, and unprecedented nephelauxetic effect in fullerenes NdM2N@C80 (M = Sc, Lu, Y)
Wei Yang, Marco Rosenkranz, Georgios Velkos, Frank Ziegs, Vasilii Dubrovin, Sandra Schiemenz, Lukas Spree, Matheus Felipe de Souza Barbosa, C. Guillemard, Manuel Valvidares, Bernd Büchner, Fupin Liu, Stanislav Avdoshenko, Alexey Popov
Chemical Science 15:2141-2157 (2024)10.1039/d3sc05146c
2023
Large‐Area Synthesis of Ferromagnetic Fe(5−x)GeTe2 /Graphene van der Waals Heterostructures with Curie Temperature above Room Temperature
Hua Lv, Alessandra da Silva, Adriana Figueroa, Charles Guillemard, Iván Fernández Aguirre, Lorenzo Camosi, Lucia Aballe, Manuel Valvidares, Sergio Valenzuela, Jürgen Schubert, Martin Schmidbauer, Jens Herfort, Michael Hanke, Achim Trampert, Roman Engel-Herbert, Manfred Ramsteiner, Joao Marcelo J. Lopes
Small 19 (2023)10.1002/smll.202302387
Engineering of perpendicular magnetic anisotropy in half-metallic magnetic Heusler epitaxial thin films
V. Palin, Charles Guillemard, C. de Melo, Sylvie Migot, P. Gargiani, M. Valvidares, F. Bertran, S. Andrieu
Physical Review Applied 20:054017 (2023)10.1103/PhysRevApplied.20.054017
Paramagnetic Nd sublattice and thickness-dependent ferromagnetism in Nd2NiMnO6 double perovskite thin films
Jonathan Spring, Gabriele de Luca, Simon Jöhr, Javier Herrero-Martín, Charles Guillemard, Cinthia Piamonteze, Carlos Rosário, Hans Hilgenkamp, Marta Gibert
Physical Review Materials 7:104407 (2023)10.1103/PhysRevMaterials.7.104407
Ultrafast demagnetization of Co2MnSi1–xAlx Heusler compounds using terahertz and infrared light
Wei Zhang, Thomas Blank, C. Guillemard, Claudia de Melo, Stéphane Mangin, Alexey Kimel, Stéphane Andrieu, Grégory Malinowski
Physical Review B B 107:224408 (2023)10.1103/physrevb.107.224408
2022
Top‐Layer Engineering Reshapes Charge Transfer at Polar Oxide Interfaces
Gabriele de Luca, Jonathan Spring, Moloud Kaviani, Simon Jöhr, Marco Campanini, Anna Zakharova, Charles Guillemard, Javier Herrero‐martin, Rolf Erni, Cinthia Piamonteze, Marta D Rossell, Ulrich Aschauer, Marta Gibert
Advanced Materials 34:2203071 (2022)10.1002/adma.202203071
Control of Oxygen Vacancy Ordering in Brownmillerite Thin Films via Ionic Liquid Gating
Hyeon Han, Arpit Sharma, Holger Meyerheim, Jiho Yoon, Hakan Deniz, Kun-Rok Jeon, Ankit Sharma, Katayoon Mohseni, Charles Guillemard, Manuel Valvidares, Pierluigi Gargiani, Stuart Parkin
ACS Nano 16:6206-6214 (2022)10.1021/acsnano.2c00012
Reversal of Anomalous Hall Effect and Octahedral Tilting in SrRuO3 Thin Films via Hydrogen Spillover
Hyeon Han, Hua Zhou, Charles Guillemard, Manuel Valvidares, Arpit Sharma, Yan Li, Ankit Sharma, Ilya Kostanovskiy, Arthur Ernst, Stuart Parkin
Advanced Materials 35 (2022)10.1002/adma.202207246
2021
Unveiling transport properties of Co2MnSi Heusler epitaxial thin films with ultra-low magnetic damping
C. de Melo, C. Guillemard, A.M. Friedel, V. Palin, J.-C. Rojas-Sánchez, S. Petit-Watelot, Stéphane Andrieu
Applied Materials Today 25:101174 (2021)10.1016/j.apmt.2021.101174
Large-area van der Waals epitaxy and magnetic characterization of Fe3GeTe2 films on graphene
J. Marcelo J. Lopes, Dietmar Czubak, Eugenio Zallo, Adriana, I Figueroa, Charles Guillemard, Manuel Valvidares, Juan Rubio-Zuazo, Jesus Lopez-Sanchez, Sergio O. Valenzuela, Michael Hanke, Manfred Ramsteiner
2D Materials 8:041001-1-041001-8 (2021)10.1088/2053-1583/ac171d
Nanocontact vortex oscillators based on Co$_2$MnGe pseudo spin valves
Jérémy Létang, Claudia de Melo, Charles Guillemard, Aymeric Vecchiola, Damien Rontani, S. Petit-Watelot, Myoung-Woo Yoo, Thibaut Devolder, Karim Bouzehouane, Vincent Cros, Stéphane Andrieu, Joo-Von Kim
Physical Review B 103:224424 (2021)10.1103/PhysRevB.103.224424
2020
Issues in growing Heusler compounds in thin films for spintronic applications
C. Guillemard, S. Petit-Watelot, T. Devolder, L. Pasquier, P. Boulet, S. Migot, J. Ghanbaja, F. Bertran, S. Andrieu
Journal of Applied Physics 128:241102 (2020)10.1063/5.0014241
Engineering Co 2 MnAl x Si 1− x Heusler Compounds as a Model System to Correlate Spin Polarization, Intrinsic Gilbert Damping, and Ultrafast Demagnetization
Charles Guillemard, Wei Zhang, Grégory Malinowski, Claudia de Melo, Jon Gorchon, S. Petit-Watelot, Jaafar Ghanbaja, Stéphane Mangin, Patrick Le Fèvre, François Bertran, Stéphane Andrieu
Advanced Materials 1908357 (2020)10.1002/adma.201908357
2019
Polycrystalline Co$_2$ Mn-based Heusler thin films with high spin polarization and low magnetic damping
C. Guillemard, S. Petit-Watelot, J.-C. Rojas-Sánchez, J. Hohlfeld, J. Ghanbaja, A. Bataille, P. Le Fèvre, F. Bertran, S. Andrieu
Applied Physics Letters 115:172401 (2019)10.1063/1.5121614
Ultra-low magnetic damping in Co 2 Mn-based Heusler compounds: promising materials for spintronic
C Guillemard, S. Petit-Watelot, L. Pasquier, D. Pierre, J. Ghanbaja, J-C Rojas-Sánchez, A. Bataille, J. Rault, P Le Fèvre, F. Bertran, Stephane Andrieu
Physical Review Applied 064009 (2019)10.1103/PhysRevApplied.11.064009
2018
Epitaxial Heusler superlattice Co 2 MnAl / Fe 2 MnAl with perpendicular magnetic anisotropy and termination-dependent half-metallicity
Tobias L Brown-Heft, John A Logan, Anthony P Mcfadden, Charles Guillemard, Patrick Le Fèvre, François Bertran, Stéphane Andrieu, Chris J Palmstrøm
Physical Review Materials 2:034402 (2018)10.1103/PhysRevMaterials.2.034402
Charge-spin current conversion in high quality epitaxial Fe/Pt systems: Isotropic spin Hall angle along different in-plane crystalline directions
C Guillemard, S. Petit-Watelot, S. Andrieu, J.-C. Rojas-Sánchez
Applied Physics Letters 113 (2018)10.1063/1.5079236