K. Beauvois
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
K. Beauvois has a total of 11 co-authors. Here are the top co-authors by number of shared publications:
E. Ressouche
Université Grenoble Alpes, CEA, IRIG, MEM, MDN, 38000 Grenoble, France
2 shared publicationsF. Bourdarot
Université Grenoble Alpes, CEA, IRIG, MEM, MDN, 38000 Grenoble, France
2 shared publicationsJ. Robert
Institut Néel, CNRS and Université Grenoble Alpes, 38000 Grenoble, France
2 shared publicationsM. Gospodinov
Institute of Solid State Physics, Bulgarian Academy of Sciences, 1184 Sofia, Bulgaria
2 shared publicationsS. Petit
Laboratoire Léon Brillouin, CEA-CNRS, Université Paris-Saclay, CE-Saclay, 91191 Gif sur Yvette, France
2 shared publicationsV. Skumryev
Departament de Física, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
2 shared publications
Latest Publications
- 24 March 2020
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 124 (12) , 127202
Dimer Physics in the Frustrated Cairo Pentagonal AntiferromagnetThe research field of magnetic frustration is dominated by triangle-based lattices but exotic phenomena can also be observed in pentagonal networks. A peculiar noncollinear magnetic order is indeed known to be stabilized in materializing a Cairo pentagonal lattice. We present the spin wave excitations in the magnetically ordered state, obtained by inelastic neutron scattering. They reveal an unconventional excited state related to local precession of pairs of spins. The magnetic excitations are then modeled to determine the superexchange interactions for which the frustration is indeed at the origin of the spin arrangement. This analysis unveils a hierarchy in the interactions, leading to a paramagnetic state (close to the Néel temperature) constituted of strongly coupled dimers separated by much less correlated spins. This produces two types of response to an applied magnetic field associated with the two nonequivalent Fe sites, as observed in the magnetization distributions obtained using polarized neutrons.- 24 March 2020
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 124 (12) , 127202
Dimer Physics in the Frustrated Cairo Pentagonal AntiferromagnetThe research field of magnetic frustration is dominated by triangle-based lattices but exotic phenomena can also be observed in pentagonal networks. A peculiar noncollinear magnetic order is indeed known to be stabilized in materializing a Cairo pentagonal lattice. We present the spin wave excitations in the magnetically ordered state, obtained by inelastic neutron scattering. They reveal an unconventional excited state related to local precession of pairs of spins. The magnetic excitations are then modeled to determine the superexchange interactions for which the frustration is indeed at the origin of the spin arrangement. This analysis unveils a hierarchy in the interactions, leading to a paramagnetic state (close to the Néel temperature) constituted of strongly coupled dimers separated by much less correlated spins. This produces two types of response to an applied magnetic field associated with the two nonequivalent Fe sites, as observed in the magnetization distributions obtained using polarized neutrons.- Open Access
Dimer Physics in the Frustrated Cairo Pentagonal Antiferromagnet Bi2Fe4O9
The research field of magnetic frustration is dominated by triangle-based lattices but exotic phenomena can also be observed in pentagonal networks. A peculiar noncollinear magnetic order is indeed known to be stabilized in Bi2Fe4O9 materializing a Cairo pentagonal lattice. We present the spin wave excitations in the magnetically ordered state, obtained by inelastic neutron scattering. They reveal an unconventional excited state related to local precession of pairs of spins. The magnetic excitations are then modeled to determine the superexchange interactions for which the frustration is indeed at the origin of the spin arrangement. This analysis unveils a hierarchy in the interactions, leading to a paramagnetic state (close to the N\'eel temperature) constituted of strongly coupled dimers separated by much less correlated spins. This produces two types of response to an applied magnetic field associated with the two nonequivalent Fe sites, as observed in the magnetization distributions obtained using polarized neutrons.
Open AccessDimer Physics in the Frustrated Cairo Pentagonal Antiferromagnet Bi2Fe4O9
The research field of magnetic frustration is dominated by triangle-based lattices but exotic phenomena can also be observed in pentagonal networks. A peculiar noncollinear magnetic order is indeed known to be stabilized in Bi2Fe4O9 materializing a Cairo pentagonal lattice. We present the spin wave excitations in the magnetically ordered state, obtained by inelastic neutron scattering. They reveal an unconventional excited state related to local precession of pairs of spins. The magnetic excitations are then modeled to determine the superexchange interactions for which the frustration is indeed at the origin of the spin arrangement. This analysis unveils a hierarchy in the interactions, leading to a paramagnetic state (close to the N\'eel temperature) constituted of strongly coupled dimers separated by much less correlated spins. This produces two types of response to an applied magnetic field associated with the two nonequivalent Fe sites, as observed in the magnetization distributions obtained using polarized neutrons.