论文标题
磁绝缘体中磁连接点附近的镁和声子的热松弛
Thermal relaxation of magnons and phonons near resonance points in magnetic insulators
论文作者
论文摘要
从理论上讲，我们研究了共振点附近的镁和声子的能量松弛率，以阐明铁磁材料中热传输的潜在机制。我们发现，简单的两个温度模型对于单音/单块工艺有效，因为磁子和声子之间的能量交换速率与它们之间的温度差成正比，并且它与高温极限中的温度无关。我们发现，通过施加外部磁场，在共振点可以将由于单次/一麦克农的相互作用引起的镁 - 音波松弛时间可将其降低至1.48 $μs$。这意味着除了高阶相互作用过程之外，共振效应在增强总磁通能量汇率方面起着重要作用。
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 valid for the one-phonon/one-magnon process, as the rate of energy exchange between magnons and phonons is proportional to the temperature difference between them, and it is independent of temperature in the high temperature limit. We found that the magnon-phonon relaxation time due to the one-phonon/one-magnon interaction could be reduced to 1.48 $μs$ at the resonance point by applying an external magnetic field. It means that the resonance effect plays a significant role in enhancing the total magnon-phonon energy exchange rate, apart from the higher order interaction processes.
