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Collective excitations and universal broadening of cyclotron absorption in Dirac semimetals in a quantizing magnetic field

机译:量化磁场中DIRAC半岩体中的集体激励及普遍扩大

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摘要

The spectrum of electromagnetic collective excitations in Dirac semimetals placed in a quantizing magnetic field is considered. We have found the Landau damping regions using the energy and momentum conservation law for allowed transitions between one-particle states of electron excitations. Analysis of dispersion equations for longitudinal and transverse waves near the window boundaries in the Landau damping regions reveals different types of collective excitations. We also indicate the features of universal broadening of cyclotron absorption for a magnetic field variation in systems with linear dispersion of the electron spectrum. The use of the obtained spectrum also allows us to predict a number of oscillation and resonance effects in the field of magneto-optical phenomena.
机译:考虑了放置在量化磁场中的DIRAC半岩中的电磁集体激励的光谱。我们已经找到了利用能量和动量保守法的Landau阻尼区域,以便在电子激发的单粒子状态之间允许转变。凸起地区窗边界附近纵向和横波的分散方程分析揭示了不同类型的集体激励。我们还指示具有电子光谱线性分散的系统中的磁场变化的通用扩大回流吸收的特征。所获得的光谱的使用还允许我们预测磁光现象领域的许多振荡和谐振效应。

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  • 来源
    《Physical review》 |2020年第24期|245206.1-245206.7|共7页
  • 作者单位

    Nizhny Novgorod Stale University 603950 Nizhny Novgorod Russia Institute of Applied Physics of the RAS 603950 Nizhny Novgorod Russia;

    Nizhny Novgorod Stale University 603950 Nizhny Novgorod Russia Institute of Applied Physics of the RAS 603950 Nizhny Novgorod Russia;

    Departamento de Fisica de Materiales UPV/EHU Centro de Fsica de Materiales CFM - MPC and Centro Mixto CSIC-UPV/EHU 20080 San Sebastian/Donostia Spain Donostia International Physics Center (DIPC) 20018 San Sebastian /Donostia Spain;

    Departamento de Fisica de Materiales UPV/EHU Centro de Fsica de Materiales CFM - MPC and Centro Mixto CSIC-UPV/EHU 20080 San Sebastian/Donostia Spain Donostia International Physics Center (DIPC) 20018 San Sebastian /Donostia Spain;

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