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"Pumping" of phonons by a dynamic magnetization promises to extend the range and functionality of magnonic devices. We explore the impact of phonon pumping on room-temperature ferromagnetic resonance (FMR) spectra of bilayers of thin…

Mesoscale and Nanoscale Physics · Physics 2022-07-20 Richard Schlitz , Luise Siegl , Takuma Sato , Weichao Yu , Gerrit E. W. Bauer , Hans Huebl , Sebastian T. B. Goennenwein

Magnets are interesting materials for classical and quantum information technologies. However, the short decoherence and dephasing times that determine the scale and speed of information networks, severely limit the appeal of employing the…

Mesoscale and Nanoscale Physics · Physics 2023-12-18 Mehrdad Elyasi , Kei Yamamoto , Tomosato Hioki , Takahiko Makiuchi , Hiroki Shimizu , Eiji Saitoh , Gerrit E. W. Bauer

We show how to generate an entangled pair of yttrium iron garnet (YIG) samples in a cavity-magnon system without using any nonlinearities which are typically very weak. This is against the conventional wisdom which necessarily requires…

Quantum Physics · Physics 2020-09-15 Jayakrishnan M. Prabhakarapada Nair , Girish S. Agarwal

Strong long-range coupling between distant spins is crucial for spin-based quantum information processing. However, achieving such a strong spin-spin coupling remains challenging. Here we propose to realize a strong coupling between two…

Quantum Physics · Physics 2022-06-30 Wei Xiong , Miao Tian , Guo-Qiang Zhang , J. Q. You

The tunability of magnons enables their interaction with various other quantum excitations, including photons, paving the route for novel hybrid quantum systems. Here, we study magnon-photon coupling using a high-quality factor split-ring…

Materials Science · Physics 2024-03-25 Dinesh Wagle , Anish Rai , Mojtaba T. Kaffash , M. Benjamin Jungfleisch

We report the experimental observation of large spin pumping signals in YIG/Pt system driven by broad-wavevector spin-wave spin current. 280 nm-wide microwave inductive antennas offer broad-wavevector excitation which, in combination with…

The linear spin-wave theory study of PbFeBO4 spin dynamics is presented. It is shown that the modes observed in Raman scattering experiments below Neel temperature are optical magnon and two-magnon excitations. Based on the magnon energy,…

Materials Science · Physics 2021-04-07 M. A. Prosnikov

Parametric spin wave excitation allows studying a variety of nonlinear phenomena, such as magnon scattering. In patterned micro- and nanostructures the magnon spectra is discrete and translational symmetry is broken, which means allowable…

Mesoscale and Nanoscale Physics · Physics 2024-09-20 Joo-Von Kim , Hugo Merbouche

Materials exhibit various wave-like excitations, among which phonons (lattice vibrations) and magnons (oscillations in ferromagnetic ordering) hold significant promise for future nanoscale technologies. Exploring the interaction between…

Mesoscale and Nanoscale Physics · Physics 2024-10-30 A. L. Bassant , M. F. van Willigen , R. A. Duine

The richness in both the dispersion and energy of antiferromagnetic magnons has spurred the magnetism community to consider antiferromagnets for future spintronic/magnonic applications. However, the excitation and control of…

The propagation of magnons along a symmetry path may depend on the direction of propagation, similar to many other quasiparticles in nature. This phenomenon is commonly referred to as nonreciprocity. In addition to the fact that it is of…

Strongly Correlated Electrons · Physics 2024-10-10 Albrecht von Faber , Christopher Hins , Khalil Zakeri

We demonstrate a microscopic magnonic-crystal waveguide produced by nano-patterning of a 20 nm thick film of Yttrium Iron Garnet. By using the phase-resolved micro-focus Brillouin light scattering spectroscopy, we map the intensity and the…

Mesoscale and Nanoscale Physics · Physics 2017-05-08 M. Collet , M. Evelt , V. E. Demidov , J. L. Prieto , M. Muñoz , J. Ben Youssef , G. de Loubens , O. Klein , P. Bortolotti , V. Cros , A. Anane , S. O. Demokritov

Interaction between quasiparticles of a different nature, such as magnons and phonons in a magnetic medium, leads to the mixing of their properties and the formation of hybrid states in the areas of intersection of individual spectral…

Mesoscale and Nanoscale Physics · Physics 2023-11-01 Pascal Frey , Dmytro A. Bozhko , Victor S. L'vov , Burkard Hillebrands , Alexander A. Serga

We have performed a time-resolved and phase-sensitive investigation of three-magnon scattering of ferromagnetic resonance (FMR) over several orders of magnitude in excitation power. We observe a regime that hosts transient oscillations of…

Mesoscale and Nanoscale Physics · Physics 2023-02-15 Tao Qu , Alex Hamill , R. H. Victora , P. A. Crowell

Spin information carried by magnons is attractive for computing technology and the development of magnon-based computing circuits is of great interest. However, magnon transport in insulators has been challenging, different from the clear…

Materials Science · Physics 2017-03-08 X. J. Zhou , G. Y. Shi , J. H. Han , Q. H. Yang , Y. H. Rao , H. W. Zhang , L. L. Lang , S. M. Zhou , F. Pan , C. Song

Inelastic neutron scattering has been used to study the magneto-elastic excitations in the multiferroic manganite hexagonal YMnO$_3$. An avoided crossing is found between magnon and phonon modes close to the Brillouin zone boundary in the…

Motivated by recent experiments on thin films of the ferromagnetic insulator yttrium-iron garnet (YIG), we have developed an efficient microscopic approach to calculate the spin-wave spectra of these systems. We model the experimentally…

Materials Science · Physics 2009-10-01 Andreas Kreisel , Francesca Sauli , Lorenz Bartosch , Peter Kopietz

We study the impact of Ga ion exposure on the local and non-local magnetotransport response in heterostructures of the ferrimagnetic insulator yttrium iron garnet and platinum. In particular, we cut the yttrium iron garnet layer in between…

Mesoscale and Nanoscale Physics · Physics 2019-07-24 Richard Schlitz , Toni Helm , Michaela Lammel , Kornelius Nielsch , Artur Erbe , Sebastian T. B. Goennenwein

On-surface chemistry has emerged as a key technique for designing novel low-dimensional materials, enabling precise manipulation of their electronic and magnetic properties at the atomic scale. It also proves highly effective for the…

Mesoscale and Nanoscale Physics · Physics 2025-02-19 Diego López-Alcalá , José J. Baldoví

We demonstrate direct probing of strong magnon-photon coupling using Brillouin light scattering spectroscopy in a planar geometry. The magnonic hybrid system comprises a split-ring resonator loaded with epitaxial yttrium iron garnet thin…