Martin Jourdan
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View article: Identifying Switching of Antiferromagnets by Spin-Orbit Torques
Identifying Switching of Antiferromagnets by Spin-Orbit Torques Open
Antiferromagnets are promising candidates for ultrafast spintronic applications, leveraging current-induced spin-orbit torques. However, experimentally distinguishing between different switching mechanisms of the staggered magnetization (N…
View article: All-optical magnetometric characterization of the antiferromagnetic exchange-spring system Mn$_2$Au|Py by terahertz spin-torques
All-optical magnetometric characterization of the antiferromagnetic exchange-spring system Mn$_2$Au|Py by terahertz spin-torques Open
Antiferromagnetic materials have great potential for spintronic applications at terahertz (THz) frequencies. However, in contrast to ferromagnets, experimental studies of antiferromagnets are often challenging due to a lack of straightforw…
View article: XRD and ARPES data associated with manuscript S. Reimers et al., Direct observation of altermagnetic band splitting in CrSb thin films
XRD and ARPES data associated with manuscript S. Reimers et al., Direct observation of altermagnetic band splitting in CrSb thin films Open
Altermagnetism represents an emergent collinear magnetic phase with compensated order and an unconventional alternating even-parity wave spin order in the non-relativistic band structure. We investigate directly this unconventional band sp…
View article: Terahertz Néel spin-orbit torques drive nonlinear magnon dynamics in antiferromagnetic Mn2Au
Terahertz Néel spin-orbit torques drive nonlinear magnon dynamics in antiferromagnetic Mn2Au Open
Antiferromagnets have large potential for ultrafast coherent switching of magnetic order with minimum heat dissipation. In materials such as Mn 2 Au and CuMnAs, electric rather than magnetic fields may control antiferromagnetic order by Né…
View article: Terahertz Néel spin-orbit torques drive nonlinear magnon dynamics in antiferromagnetic Mn2Au
Terahertz Néel spin-orbit torques drive nonlinear magnon dynamics in antiferromagnetic Mn2Au Open
Data for the publication "Terahertz Néel spin-orbit torques drive nonlinear magnon dynamics in antiferromagnetic Mn2Au", published in Nat Commun 14, 6038 (2023). (https://doi.org/10.1038/s41467-023-41569-z). A preprint (2023) can be found …
View article: Terahertz Néel spin-orbit torques drive nonlinear magnon dynamics in antiferromagnetic Mn2Au
Terahertz Néel spin-orbit torques drive nonlinear magnon dynamics in antiferromagnetic Mn2Au Open
Data for the publication "Terahertz Néel spin-orbit torques drive nonlinear magnon dynamics in antiferromagnetic Mn2Au", published in Nat Commun 14, 6038 (2023). (https://doi.org/10.1038/s41467-023-41569-z). A preprint (2023) can be found …
View article: Fiber-tip spintronic terahertz emitters
Fiber-tip spintronic terahertz emitters Open
Spintronic terahertz emitters promise terahertz sources with an unmatched broad frequency bandwidth that are easy to fabricate and operate, and therefore easy to scale at low cost. However, current experiments and proofs of concept rely on…
View article: Control of the asymmetric band structure in Mn2Au by a ferromagnetic driver layer
Control of the asymmetric band structure in Mn2Au by a ferromagnetic driver layer Open
Hard X-ray angle-resolved photoemission spectroscopy reveals the momentum-resolved band structure in an epitaxial Mn2Au(001) film capped by a 2 nm thick ferromagnetic Permalloy layer. By magnetizing the Permalloy capping layer, the excepti…
View article: Nonlinear terahertz Néel spin-orbit torques in antiferromagnetic Mn$_2$Au
Nonlinear terahertz Néel spin-orbit torques in antiferromagnetic Mn$_2$Au Open
Antiferromagnets have large potential for ultrafast coherent switching of magnetic order with minimum heat dissipation. In novel materials such as Mn$_2$Au and CuMnAs, electric rather than magnetic fields may control antiferromagnetic orde…
View article: Fiber-tip spintronic terahertz emitters
Fiber-tip spintronic terahertz emitters Open
Spintronic terahertz emitters promise terahertz sources with an unmatched broad frequency bandwidth that are easy to fabricate and operate, and therefore easy to scale at low cost. However, current experiments and proofs of concept rely on…
View article: Magnetic domain engineering in antiferromagnetic CuMnAs and Mn$_2$Au devices
Magnetic domain engineering in antiferromagnetic CuMnAs and Mn$_2$Au devices Open
Antiferromagnetic materials hold potential for use in spintronic devices with fast operation frequencies and field robustness. Despite the rapid progress in proof-of-principle functionality in recent years, there has been a notable lack of…
View article: Coupling of ferromagnetic and antiferromagnetic spin dynamics in Mn$_{2}$Au/NiFe thin-film bilayers
Coupling of ferromagnetic and antiferromagnetic spin dynamics in Mn$_{2}$Au/NiFe thin-film bilayers Open
We investigate magnetization dynamics of Mn$_{2}$Au/Py (Ni$_{80}$Fe$_{20}$) thin film bilayers using broadband ferromagnetic resonance (FMR) and Brillouin light scattering spectroscopy. Our bilayers exhibit two resonant modes with zero-fie…
View article: Current-driven writing process in antiferromagnetic Mn_2Au for memory applications
Current-driven writing process in antiferromagnetic Mn_2Au for memory applications Open
Current pulse induced resistance changes in Mn2Au(001) epitaxial thin films associated with Néel vector reorientation.
View article: Current-driven writing process in antiferromagnetic Mn_2Au for memory applications
Current-driven writing process in antiferromagnetic Mn_2Au for memory applications Open
Current pulse induced resistance changes in Mn2Au(001) epitaxial thin films associated with Néel vector reorientation.
View article: Optically Triggered Néel Vector Manipulation of a Metallic Antiferromagnet Mn<sub>2</sub>Au under Strain
Optically Triggered Néel Vector Manipulation of a Metallic Antiferromagnet Mn<sub>2</sub>Au under Strain Open
The absence of stray fields, their insensitivity to external magnetic fields, and ultrafast dynamics make antiferromagnets promising candidates for active elements in spintronic devices. Here, we demonstrate manipulation of the Néel vector…
View article: Direct observation of antiferromagnetic parity violation in the electronic structure of Mn<sub>2</sub>Au
Direct observation of antiferromagnetic parity violation in the electronic structure of Mn<sub>2</sub>Au Open
Using momentum microscopy with sub- µ m spatial resolution, allowing momentum resolved photoemission on individual antiferromagnetic domains, we observe an asymmetry in the electronic band structure, , in Mn 2 Au. This broken ba…
View article: Current-driven writing process in antiferromagnetic Mn2Au for memory applications
Current-driven writing process in antiferromagnetic Mn2Au for memory applications Open
Current pulse driven Neel vector rotation in metallic antiferromagnets is one of the most promising concepts in antiferromagnetic spintronics. We show microscopically that the Neel vector of epitaxial thin films of the prototypical compoun…
View article: Optically-triggered strain-driven Néel vector manipulation in a metallic antiferromagnet
Optically-triggered strain-driven Néel vector manipulation in a metallic antiferromagnet Open
The absence of stray fields, their insensitivity to external magnetic fields, and ultrafast dynamics make antiferromagnets promising candidates for active elements in spintronic devices. Here, we demonstrate manipulation of the Néel vector…
View article: Optically-triggered strain-driven Néel vector manipulation in a metallic antiferromagnet
Optically-triggered strain-driven Néel vector manipulation in a metallic antiferromagnet Open
The absence of stray fields, their insensitivity to external magnetic fields, and ultrafast dynamics make antiferromagnets promising candidates for active elements in spintronic devices. Here, we demonstrate manipulation of the Néel vector…
View article: Direct Observation of Antiferromagnetic Parity Violation in the Electronic Structure of Mn2Au
Direct Observation of Antiferromagnetic Parity Violation in the Electronic Structure of Mn2Au Open
Parity symmetric photoemission spectra are ubiquitous in solid state research, being prevalent in many highly active areas, such as unconventional superconductors, nonmagnetic and antifer- romagnetic topological insulators, and weakly rela…
View article: Readout of an antiferromagnetic spintronics system by strong exchange coupling of Mn2Au and Permalloy
Readout of an antiferromagnetic spintronics system by strong exchange coupling of Mn2Au and Permalloy Open
In antiferromagnetic spintronics, the read-out of the staggered magnetization or Néel vector is the key obstacle to harnessing the ultra-fast dynamics and stability of antiferromagnets for novel devices. Here, we demonstrate strong exchang…
View article: Readout of an antiferromagnetic spintronics system by strong exchange coupling of Mn2Au and Permalloy
Readout of an antiferromagnetic spintronics system by strong exchange coupling of Mn2Au and Permalloy Open
Data corresponding to figures 2 and 3 of arXiv:2106.02333. Manuscript accepted by Nature Communications.
View article: Readout of an antiferromagnetic spintronics system by strong exchange coupling of Mn2Au and Permalloy
Readout of an antiferromagnetic spintronics system by strong exchange coupling of Mn2Au and Permalloy Open
Data corresponding to figures 2 and 3 of arXiv:2106.02333. Manuscript accepted by Nature Communications.
View article: Readout of a antiferromagnetic spintronics systems by strong exchange coupling of Mn2Au and Permalloy
Readout of a antiferromagnetic spintronics systems by strong exchange coupling of Mn2Au and Permalloy Open
In antiferromagnetic spintronics, the read-out of the staggered magnetization or Neel vector is the key obstacle to harnessing the ultra-fast dynamics and stability of antiferromagnets for novel devices. Here, we demonstrate strong exchang…
View article: Band structure tuning of Heusler compounds: Spin- and momentum-resolved electronic structure analysis of compounds with different band filling
Band structure tuning of Heusler compounds: Spin- and momentum-resolved electronic structure analysis of compounds with different band filling Open
Half-metallic ferromagnetic Heusler compounds represent an important class of materials for spintronic applications. We experimentally observe the dispersion of electronic bands with spin resolution in three representative Heusler compound…
View article: Néel Vector Induced Manipulation of Valence States in the Collinear Antiferromagnet Mn<sub>2</sub>Au
Néel Vector Induced Manipulation of Valence States in the Collinear Antiferromagnet Mn<sub>2</sub>Au Open
The coupling of real and momentum space is utilized to tailor electronic properties of the collinear metallic antiferromagnet Mn2Au by aligning the real space Néel vector indicating the direction of the staggered magnetization. Pulsed magn…
View article: RBS raw data for publication "High quality epitaxial Mn2Au (001) thin films grown by molecular beam epitaxy "
RBS raw data for publication "High quality epitaxial Mn2Au (001) thin films grown by molecular beam epitaxy " Open
RBS raw data for publication "High quality epitaxial Mn2Au (001) thin films grown by molecular beam epitaxy " Simulation results using SINRA are included as well.