Zobrazeno 1 - 10
of 344
pro vyhledávání: '"A. Qaiumzadeh"'
Autor:
Frostad, Therese, Kristoffersen, Anne Louise, Troncoso, Verena Brehm Roberto E., Brataas, Arne, Qaiumzadeh, Alireza
Magnon Bose-Einstein condensates in ferromagnetic insulators has been a field of much interest, while condensation in anti-ferromagnetic systems are yet to be explored in detail. We analyze the stability of condensed chiral magnons in two antiferroma
Externí odkaz:
http://arxiv.org/abs/2412.14652
We investigate the second-order photon correlation function in cavity-magnon systems, focusing on ferromagnetic and antiferromagnetic cavities within the ultra-strong coupling regime, and extending beyond the rotating-wave approximation. By deriving
Externí odkaz:
http://arxiv.org/abs/2411.18512
On the Origin of $A$-type Antiferromagnetism and Chiral Split Magnons in Altermagnetic $\alpha$-MnTe
Autor:
Alaei, Mojtaba, Sobieszczyk, Pawel, Ptok, Andrzej, Rezaei, Nafise, Oganov, Artem R., Qaiumzadeh, Alireza
The origin of the $A$-type antiferromagnetic ordering, where ferromagnetic layers couple antiferromagnetically, in the semiconductor altermagnet $\alpha$-MnTe has been a subject of ongoing debate. Experimentally, $\alpha$-MnTe exhibits a nearest-neig
Externí odkaz:
http://arxiv.org/abs/2411.11985
The thermomagnetic Nernst effect and chiral edge states are key signatures of nontrivial topology and emerging Berry curvature in magnonic systems. Implementing atomistic spin simulations, we theoretically demonstrate the emergence of chiral magnon e
Externí odkaz:
http://arxiv.org/abs/2409.15964
Autor:
R. Lebrun, A. Ross, O. Gomonay, V. Baltz, U. Ebels, A.-L. Barra, A. Qaiumzadeh, A. Brataas, J. Sinova, M. Kläui
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
Hitherto, only circularly polarized antiferromagnetic (AFM) spin-waves (SWs) were expected to convey spin-information. Here, the authors present persistent spin-transport over long distances in the easy-plane AFM phase of hematite, α-Fe2O3, via line
Externí odkaz:
https://doaj.org/article/6145c46b7e9149d48bb8b48101ee3381
Publikováno v:
Phys. Rev. B 110, 014440 (2024)
We investigate the magneto-optical properties of two-dimensional nonsymmorphic Dirac semimetals in the presence of antiferromagnetic order. Using the Kubo formula, we calculate the conductivity tensor of two-dimensional CuMnAs, a prototype antiferrom
Externí odkaz:
http://arxiv.org/abs/2406.14465
Publikováno v:
Phys. Rev. B 109, 214436 (2024)
We investigate the impact of spin torque and spin pumping on the surface magnon polariton dispersion in a antiferromagnetic insulator-semiconductor heterostructure. In the bilayer system, the surface magnon polaritons conventionally couple to the pla
Externí odkaz:
http://arxiv.org/abs/2403.06934
Publikováno v:
Phys. Rev. B 110, 054431 (2024)
The topological charge-Hall effect (TCHE) and the topological spin-Hall effect (TSHE), arising from ferromagnetic (FM) and antiferromagnetic (AFM) skyrmions, respectively; can be elucidated through the emergence of spin-dependent Berry gauge fields t
Externí odkaz:
http://arxiv.org/abs/2402.18369
Publikováno v:
Phys. Rev. Materials 8, 054002 (2024)
Atomically-thin van der Waals magnetic materials offer exceptional opportunities to mechanically and electrically manipulate magnetic states and spin textures. The possibility of efficient spin transport in these materials makes them promising for th
Externí odkaz:
http://arxiv.org/abs/2401.13984
Autor:
Brehm, Verena, Sobieszczyk, Pawel, Kløgetvedt, Jostein, Evans, Richard F. L., Santos, Elton J. G., Qaiumzadeh, Alireza
Publikováno v:
Phys. Rev. B 109, 174425 (2024)
The microscopic origin of the topological magnon band gap in CrI$_3$ ferromagnets has been a subject of controversy for years since two main models with distinct characteristics, i.e., Dzyaloshinskii-Moriya (DM) and Kitaev, provided possible explanat
Externí odkaz:
http://arxiv.org/abs/2312.09903