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The observation of strongly coupled lattice and spin dynamics in altermagnet CoF$_2$ is reported. On the background of the expected spin-phonon interaction leading to renormalization of all phonons at the Neel temperature an additional…

Materials Science · Physics 2024-05-14 M. A. Prosnikov , M. Bal , R. V. Pisarev , P. C. M. Christianen , A. M. Kalashnikova

Motivated by recent measurements on CuGeO$_3$ the spectrum of magnetic excitations of an antiferromagnetic $S=\frac{1}{2}$ chain with alternating coupling strength is investigated. Wave vector dependent magnons and a continuum with square…

Condensed Matter · Physics 2009-10-28 Götz S. Uhrig , H. J. Schulz

We present a simple tight-binding model for the two-dimensional energy bands of polyacene field-effect transistors and for the coupling of these bands to lattice vibrations of their host molecular crystal. We argue that the strongest…

Superconductivity · Physics 2009-11-07 Jairo Sinova , John Schliemann , Alvaro S. Núñez , A. H. MacDonald

Tunability of coherent coupling between fundamental excitations is an important prerequisite for expanding their functionality in hybrid quantum systems. In hybrid magnonics, the dipolar interaction between magnon and photon usually…

Two-dimensional (2D) magnetic systems possess versatile magnetic order and can host tunable magnons carrying spin angular momenta. Recent advances show angular momentum can also be carried by lattice vibrations in the form of chiral…

The field of hybrid magnonics has gained significant momentum in recent years, driven by its potential to enable coherent information transfer and quantum transduction. This study delves into the tunable magnon-magnon coupling within a…

Mesoscale and Nanoscale Physics · Physics 2024-11-12 Swapnil Barman , Pratap Kumar Pal , Rajib Kumar Mitra

Topological spin textures exhibit a hierarchical nature. For instance, magnetic skyrmions, which possess a particle-like nature, can aggregate to form superstructures such as skyrmion strings and skyrmion lattices. Magnetic hopfions are…

Strongly Correlated Electrons · Physics 2024-11-04 Shoya Kasai , Kotaro Shimizu , Shun Okumura , Yasuyuki Kato , Yukitoshi Motome

We perform thermodynamic and inelastic neutron scattering (INS) measurements to study the lattice dynamics (phonons) of a cubic collinear antiferromagnet Cu$_3$TeO$_6$ which hosts topological spin excitations (magnons). While the specific…

We study the hybrid excitations due to the coupling between surface optical phonons of a polar insulator substrate and plasmons in the valley-spin-polarized metal phase of silicene under an exchange field. We perform the calculations within…

Mesoscale and Nanoscale Physics · Physics 2018-11-30 M. Mirzaei , T. Vazifehshenas , T. Salavati-fard , M. Farmanbar , B. Tanatar

We propose a mechanism to obtain chiral phonon-like excitations from the bond-dependent magnetoelastic couplings in the absence of out-of-plane magnetization and magnetic fields. By mapping the hybrid excitation to its phononic analog, we…

Mesoscale and Nanoscale Physics · Physics 2025-01-03 Bowen Ma , Z. D. Wang , Gang V. Chen

Linear magnon-phonon coupling hybridizes magnon and phonon bands at the same energy and momentum, resulting in an anticrossing signature.This hybrid quasiparticle benefits from a long phonon lifetime and efficient magnon transport, showing…

Materials Science · Physics 2025-01-27 Wuzhang Fang , Jacopo Simoni , Yuan Ping

Quasiparticle excitations in material solids often experience a fictitious gauge field, which can be a potential source of intriguing transport phenomena. Here, we show that low-energy excitations in insulating antiferromagnetic skyrmion…

Strongly Correlated Electrons · Physics 2025-08-12 Masataka Kawano

We study magnetoplasmons or neutral collective excitations of graphene in a strong perpendicular magnetic field, which can be modelled as bound electron-hole pairs. The SU(4) symmetry of graphene arising from spin and valley pseudospin…

Mesoscale and Nanoscale Physics · Physics 2011-04-28 Andrea M. Fischer , Rudolf A. Roemer , Alexander B. Dzyubenko

We theoretically study the electromagnetic wave radiation of magnons driven by acoustic phonons in systems with strong magnon-phonon interaction. We evaluate the field dependence of radiation intensity spectra which exhibits the avoided…

Mesoscale and Nanoscale Physics · Physics 2022-06-10 Yahui Ji , Chenye Zhang , Tianxiang Nan

Topological electronics has extended its richness to non-electronic systems where phonons and magnons can play the role of electrons. In particular, topological phases of magnons can be enabled by the Dzyaloshinskii-Moriya interaction (DMI)…

Mesoscale and Nanoscale Physics · Physics 2021-01-13 Yu-Hang Li , Ran Cheng

Cavity magnomechanics has become an ideal platform to explore macroscopic quantum effects. Bringing together magnons, phonons, and photons in a system, it opens many opportunities for quantum technologies. It was conventionally realized by…

Quantum Physics · Physics 2024-02-20 Chun-Jie Yang , Qingjun Tong , Jun-Hong An

Topology can manifest topological magnetism (e.g., skyrmion and bimeron) in real space and quantum anomalous Hall (QAH) state in momentum space, which have changed the modern conceptions of matter phase. While the topologies in different…

Materials Science · Physics 2024-07-15 Zhonglin He , Wenhui Du , Kaiying Dou , Ying Dai , Baibiao Huang , Yandong Ma

Low-dimensional frustrated magnetic square networks feature a variety of unconventional phases with novel emergent excitations. Often these excitations are intertwined and manifest into intriguing phenomena, an area that has remained…

Materials Science · Physics 2024-01-10 Shalini Badola , Aprajita Joshi , Akriti Singh , Surajit Saha

We develop a linear response theory for the dynamical proximity effect in topological superconductor/ferromagnetic insulator (TS/FI) hybrids. Our approach integrates the nonequilibrium quasiclassical Keldysh-Usadel formalism for the TS with…

Superconductivity · Physics 2026-03-23 T. Karabassov , I. V. Bobkova , A. M. Bobkov , A. S. Vasenko , A. A. Golubov

Altermagnetism, a type of magnetic order that combines properties of ferro- and antiferromagnets, has stirred great interest lately not only as a promising source of spintronics applications, but also as a potential gateway to exotic phases…

Strongly Correlated Electrons · Physics 2025-05-15 Pedro M. Cônsoli , Matthias Vojta