Evidence for spin current driven Bose-Einstein condensation of magnons

Autor: B. Divinskiy, H. Merbouche, V. E. Demidov, K. O. Nikolaev, L. Soumah, D. Gouéré, R. Lebrun, V. Cros, Jamal Ben Youssef, P. Bortolotti, A. Anane, S. O. Demokritov

Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)

A gas of magnons, quantised magnetic excitations, can be driven into a Bose-Einstein condensation (BEC) state even at room temperature. Here, Divinskiy et al show that it is possible to achieve stationary equilibrium room-temperature magnon BEC via a

Externí odkaz: https://doaj.org/article/2e59973d5e7643788c8e558d0f49d964

Temperature-independent ferromagnetic resonance shift in Bi-doped YIG garnets through magnetic anisotropy tuning

Autor: Diane Gouéré, Hugo Merbouche, Aya El Kanj, Felix Kohl, Cécile Carrétéro, Isabella Boventer, Romain Lebrun, Paolo Bortolotti, Vincent Cros, Jamal Ben Youssef, Abdelmadjid Anane

Publikováno v: PHYSICAL REVIEW MATERIALS

Thin garnet films are becoming central for magnon-spintronics and spin-orbitronics devices as they show versatile magnetic properties together with low magnetic losses. These fields would benefit from materials in which heat does not affect the magne

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e226408e8212596118a3e79822f867d4

Giant magnon spin conductivity approaching the two-dimensional transport regime in ultrathin yttrium iron garnet films

Autor: Xiangyang Wei, Obed Alves Santos, Cristhian Humberto Sumba Lusero, Gerrit Bauer, Jamal Ben Youssef, Bart van Wees

Conductivities are key material parameters that govern various types of transport (electronic charge, spin, heat etc.) driven by thermodynamic forces. Magnons, the elementary excitations of the magnetic order, flow under the gradient of a magnon chem

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::38f6036f7994fc117b634bd56c8133de
https://doi.org/10.21203/rs.3.rs-1217468/v1

Frequency Filtering with a Magnonic Crystal Based on Nanometer-Thick Yttrium Iron Garnet Films

Autor: Olivier D’Allivy Kelly, P. Bortolotti, Vincent Cros, M. Evelt, Martin Collet, Vladislav E. Demidov, Grégoire de Loubens, Abdelmadjid Anane, Jamal Ben Youssef, Sergej O. Demokritov, H. Merbouche, José L. Prieto, Manuel Muñoz, Olivier Klein, Stéphane Xavier

Publikováno v: ACS Applied Nano Materials
ACS Applied Nano Materials, 2021, 4 (1), pp.121-128. ⟨10.1021/acsanm.0c02382⟩
ACS Applied Nano Materials, American Chemical Society, 2021, 4 (1), pp.121-128. ⟨10.1021/acsanm.0c02382⟩

Magnonics rely on the wave nature of the magnetic excitations to process information, an approach that is common to many fields such as photonics, phononics, and plasmonics. Nevertheless, magnons, ...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c71858614e3b94aa3017eaa9bd8cc37d
https://hal.science/hal-03213163

Temperature Dependence of Magnetic Properties of a Ultrathin Yttrium-Iron Garnet Film Grown by Liquid Phase Epitaxy: Effect of a Pt Overlayer

Autor: Grégoire de Loubens, Jamal Ben Youssef, Olivier Klein, Nicolas Vukadinovic, N. Thiery, V. V. Naletov, Herve Hurdequint, Nelly Kervarec, Nathan Beaulieu

Publikováno v: IEEE Magnetics Letters. 9:1-5

Liquid phase epitaxy of an 18 nm thick yttrium-iron garnet (YIG) film is achieved. Its magnetic properties are investigated in the 100–400 K temperature range, as well as the influence of a 3 nm thick Pt overlayer on them. The saturation magnetizat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9af16f68caae491f3b5d05e2a9c41ee8
https://doi.org/10.1109/lmag.2018.2868700