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On-chip cavity magnomechanics is an emerging field exploring acoustic and magnonic functionalities of various ferromagnetic materials and structures using strongly confined phonons. It is expected that such cavity magnomechanics can be…

Mesoscale and Nanoscale Physics · Physics 2023-10-25 Motoki Asano , Hiroki Matsumoto , Masamitsu Hayashi , Daiki Hatanaka

We demonstrate large normal-mode splitting between a magnetostatic mode (the Kittel mode) in a ferromagnetic sphere of yttrium iron garnet and a microwave cavity mode. Strong coupling is achieved in the quantum regime where the average…

We theoretically study nonperturbative strong-coupling phenomena in cavity magnonics systems in which the uniform magnetization dynamics (magnons) in a ferromagnet is coupled to the microwave magnetic field (photons) of a single LC…

Mesoscale and Nanoscale Physics · Physics 2025-11-05 Takahiro Chiba , Ryunosuke Suzuki , Takashi Otaki , Hiroaki Matsueda

We realize a cavity magnon-microwave photon system in which magnetic dipole interaction mediates strong coupling between collective motion of large number of spins in a ferrimagnet and the microwave field in a three-dimensional cavity. By…

Quantum Physics · Physics 2014-10-08 Xufeng Zhang , Chang-Ling Zou , Liang Jiang , Hong X. Tang

Synthetic antiferromagnet, comprised of two ferromagnetic layers separated by a non-magnetic layer, possesses two uniform precession resonance modes: in-phase acoustic mode and out-of-phase optic mode. In this work, we theoretically and…

Strongly Correlated Electrons · Physics 2021-03-19 Changting Dai , Fusheng Ma

We present a theoretical approach to use ferro- or ferrimagnetic nanoparticles as microwave nanomagnonic cavities to concentrate microwave magnetic fields into deeply subwavelength volumes $\sim 10^{-13}$ mm$^3$. We show that the field in…

Quantum Physics · Physics 2021-01-04 Tomáš Neuman , Derek S. Wang , Prineha Narang

Antiferromagnetic materials are magnetic inside, however, the direction of their ordered microscopic moments alternates between individual atomic sites. The resulting zero net magnetic moment makes magnetism in antiferromagnets invisible on…

Materials Science · Physics 2016-03-23 T. Jungwirth , X. Marti , P. Wadley , J. Wunderlich

We investigate the second-order photon correlation function in cavity-magnon systems, focusing on ferromagnetic and antiferromagnetic cavities within the ultrastrong coupling regime, and extending beyond the rotating-wave approximation. By…

Mesoscale and Nanoscale Physics · Physics 2025-04-01 Vemund Falch , Arne Brataas , Alireza Qaiumzadeh

We formulate a scattering theory to study magnetic films in microwave cavities beyond the independent-spin and rotating wave approximations of the Tavis-Cummings model. We demonstrate that strong coupling can be realized not only for the…

Mesoscale and Nanoscale Physics · Physics 2015-03-26 Yunshan Cao , Peng Yan , Hans Huebl , Sebastian T. B. Goennenwein , Gerrit E. W. Bauer

Strong coupling between magnon and electromagnetic wave can lead to the formation of a coupled spinphoton quasiparticle named as magnon-polariton. The phenomenon is well studied for ferromagnetic systems inside microwave cavities in recent…

Strongly Correlated Electrons · Physics 2020-06-24 L. Y. Shi , D. Wu , Z. X. Wang , T. Lin , C. M. Hu , N. L. Wang

The interlayer coupling mediated by fermions in ferromagnets brings about parallel and anti-parallel magnetization orientations of two magnetic layers, resulting in the giant magnetoresistance, which forms the foundation in spintronics and…

Magnons are quantized collective spin-wave excitations in magnetically ordered materials. Revealing their interactions among these collective modes is crucial for the understanding of fundamental many-body effects in such systems and the…

A superconductor can interact with magnets through the magnetic field which is induced by the supercurrent. However, this interaction is rather weak and requires relatively large magnets to reach a sizable hybridization of microwave…

Superconductivity · Physics 2021-10-13 A. G. Mal'shukov

Strong coupling between magnons and cavity photons was studied extensively for quantum electrodynamics in the past few years. Recently, the strong magnon-magnon coupling between adjacent layers in magnetic multilayers has been reported.…

Strongly Correlated Electrons · Physics 2020-05-26 Changting Dai , Kaile Xie , Zizhao Pan , Fusheng Ma

Cavity spintronics recently heralded non-local magnonic signal transfer between magnetic samples. Here we show that by including superconductors in the cavity, we can make use of these principles to bring composite…

Mesoscale and Nanoscale Physics · Physics 2020-12-30 Andreas T. G. Janssønn , Haakon T. Simensen , Akashdeep Kamra , Arne Brataas , Sol H. Jacobsen

We study dissipative spin-spin coupling in dispersive regime mediated by virtual photons in a microwave cavity. Dissipative coupling between magnetization of each magnetic material and the cavity photons is established by means of two phase…

Mesoscale and Nanoscale Physics · Physics 2019-07-17 Vahram L. Grigoryan , Ke Xia

We study spin-photon coupling in cavity in the presence of relative phase shift between two ferromagnetic resonance driving forces. We show that the anticrossing gap can be manipulated by varying the relative phase. Increasing the phase…

Mesoscale and Nanoscale Physics · Physics 2018-07-11 Vahram L. Grigoryan , Ka Shen , Ke Xia

We investigate the influence of the spin-phonon coupling in the triangular antiferromagnet where the coupling is of the exchange-striction type. The magnon dispersion is shown to be modified significantly at wave vector (2pi,0) and its…

Strongly Correlated Electrons · Physics 2011-11-09 Jung Hoon Kim , Jung Hoon Han

Sensitive signal detection and processing in classical world, especially in quantum regime, require nonreciprocal manipulation. In this paper we show how to achieve nonreciprocal quantum synchronization for two magnon modes in a…

Quantum Physics · Physics 2021-05-31 Zhi-Bo Yang , Hong-Yu Liu , Rong-Can Yang

We experimentally realize indirect coupling between two cavity modes via strong coupling with the ferromagnetic resonance in Yttrium Iron Garnet (YIG). We find that some indirectly coupled modes of our system can have a higher microwave…

Mesoscale and Nanoscale Physics · Physics 2016-11-17 Paul Hyde , Lihui Bai , Michael Harder , Christophe Match , Can-Ming Hu