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相关论文: Generalized two-temperature model for coupled phon…

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Motivated by thermal conductivity experiments in spin chain compounds, we propose a phenomenological model to account for a ballistic magnetic transport coupled to a diffusive phononic one, along the line of the seminal two-temperature…

统计力学 · 物理学 2021-08-04 P. Zavitsanos , X. Zotos

We study the coupled magnon energy transport and collective magnetization dynamics in ferromagnets with magnetic textures. By constructing a phenomenological theory based on irreversible thermodynamics, we describe motion of domain walls by…

介观与纳米尺度物理 · 物理学 2012-03-20 Alexey A. Kovalev , Yaroslav Tserkovnyak

We theoretically study the effects of strong magnetoelastic coupling on the transport properties of magnetic insulators. We develop a Boltzmann transport theory for the mixed magnon-phonon modes (magnon polarons) and determine transport…

介观与纳米尺度物理 · 物理学 2017-04-19 Benedetta Flebus , Ka Shen , Takashi Kikkawa , Ken-ichi Uchida , Zhiyong Qiu , Eiji Saitoh , Rembert A. Duine , Gerrit E. W. Bauer

The design of graphene-based composite with high thermal conductivity requires a comprehensive understanding of phonon coupling in graphene. We extended the two-temperature model to coupled groups of phonon. The study give new physical…

介观与纳米尺度物理 · 物理学 2017-10-11 Meng An , Qichen Song , Xiaoxiang Yu , Han Meng , Dengke Ma , Ruiyang Li , Zelin Jin , Baoling Huang , Nuo Yang

We theoretically investigate the energy relaxation rate of magnons and phonons near the resonance points to clarify the underlying mechanism of heat transport in ferromagnetic materials. We find that the simple two-temperature model is…

介观与纳米尺度物理 · 物理学 2020-09-28 Qing Xi , Bin Liu , Zhong Shi , Tsuneyoshi Nakayama , Jun Zhou , Baowen Li

We calculate the effects of the spin-lattice coupling on the magnon spectrum of thin ferromagnetic films consisting of the magnetic insulator yttrium-iron garnet. The magnon-phonon hybridisation generates a characteristic minimum in the…

We study magnon spectra at finite temperature in yttrium iron garnet from tight-binding model with nearest neighboring exchange interaction. The spin reduction due to thermal magnon excitation are taken into account via the mean field…

介观与纳米尺度物理 · 物理学 2018-05-09 Ka Shen

In a previous paper (Paper I) we developed a technique for exactly solving the linearized Boltzmann equation for the electrical and thermal transport coefficients in metals in the low-temperature limit. Here we adapt this technique to…

统计力学 · 物理学 2021-01-04 J. Amarel , D. Belitz , T. R. Kirkpatrick

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…

介观与纳米尺度物理 · 物理学 2023-11-01 Pascal Frey , Dmytro A. Bozhko , Victor S. L'vov , Burkard Hillebrands , Alexander A. Serga

We calculate the phonon, electron and magnon temperature profiles in yttrium iron garnet/platinum bilayers by diffusive theory with appropriate boundary conditions, in particular taking into account interfacial thermal resistances. Our…

We develop a Boltzmann transport theory of coupled magnon-phonon transport in ferromagnetic insulators. The explicit treatment of the magnon-phonon coupling within the Boltzmann approach allows us to calculate the low-temperature…

介观与纳米尺度物理 · 物理学 2018-11-14 Rico Schmidt , Francis Wilken , Tamara S. Nunner , Piet W. Brouwer

This review presents a comprehensive study of the spatial dispersion of propagating magnons electrically emitted in extended yttrium-iron garnet (YIG) films by the spin transfer effects across a YIG$\vert$Pt interface. Our goal is to…

Understanding ballistic phonon transport effects in transient thermoreflectance experiments and explaining the observed deviations from classical theory remains a challenge. Diffusion equations are simple and computationally efficient but…

介观与纳米尺度物理 · 物理学 2016-03-23 Jesse Maassen , Mark Lundstrom

Transient cooling phenomenon in two-dimensional materials is studied based on the phonon Boltzmann transport equation (BTE). Using a heating laser pulse to heat the two-dimensional disk geometry under the environment temperature, after the…

介观与纳米尺度物理 · 物理学 2024-10-10 Chuang Zhang , Lei Wu

Ultrafast thermal transport in low-dimensional materials challenges traditional diffusive models due to reduced scattering, strong electron-phonon coupling, and pronounced non-equilibrium effects. To address these complexities, we extend…

介观与纳米尺度物理 · 物理学 2025-12-01 Houssem Rezgui , Chuang Zhang , Clivia Sotomayor-Torres

We present a quantum Hall effect of magnons in two-dimensional clean insulating magnets at finite temperature. Through the Aharonov-Casher effect, a magnon moving in an electric field acquires a geometric phase and forms Landau levels in an…

介观与纳米尺度物理 · 物理学 2017-03-24 Kouki Nakata , Jelena Klinovaja , Daniel Loss

We study electrical and thermal conductivities of degenerate electrons emitting and absorbing phonons in a strongly magnetized crystalline neutron star crust. We take into account modification of the phonon spectrum of a Coulomb solid of…

高能天体物理现象 · 物理学 2016-03-23 D. A. Baiko

We propose a theory for thermal Hall transport mediated by magnons to address the impact of their damping resulting from magnon-magnon interactions in insulating magnets. This phenomenon is anticipated to be particularly significant in…

强关联电子 · 物理学 2024-07-10 Shinnosuke Koyama , Joji Nasu

Using a nonequilibrium functional renormalization group (FRG) approach we calculate the time evolution of the momentum distribution of a magnon gas in contact with a thermal phonon bath. As a cutoff for the FRG procedure we use a…

强关联电子 · 物理学 2012-11-21 Johannes Hick , Thomas Kloss , Peter Kopietz

We derive the Onsager response matrix of fluctuation-mediated spin-collinear transport through a ferromagnetic insulator and normal metal interface driven by a temperature difference, spin accumulation, or magnetic field. We predict…

材料科学 · 物理学 2015-08-14 Jiang Xiao , Gerrit E. W. Bauer
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