Energy relaxation dynamics in a nodal-line semimetal

Energy relaxation dynamics in a nodal-line semimetal
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节线半金属中的能量弛豫动力学

DOI:
10.1103/physrevb.105.144304
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发表时间:
2022
期刊:
影响因子:
3.7
通讯作者:
Sakhya, Anup Pradhan
Sakhya, Anup Pradhan
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Fregoso, Benjamin M.;Neupane, Madhab;Sakhya, Anup Pradhan

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研究了在声子和声子模式存在下,节点线半金属在突然激发后的温度弛豫动力学。我们发现节点线限制了散射过程中的电子动量,因此,声子引起的温度弛豫随时间呈指数函数。然而,根据初始条件,其他功能形式是可能的。在典型的泵浦探测实验中,由于声子的速率随密度而变化,温度弛豫是线性的。由光学声子引起的温度弛豫也与速率因子呈线性关系。
We study the temperature relaxation dynamics of nodal-line semimetals after a sudden excitation in the presence of acoustic and optical phonon modes. We find that the nodal line constrains the electron momenta in scattering processes, and as a result, the temperature relaxation due to acoustic phonons is exponential as a function of time. However, depending on initial conditions, other functional forms are possible. In typical pump-probe experiments, the temperature relaxation is linear due to acoustic phonons with rates that vary aswith density. The temperature relaxation due to optical phonons is also linear with ratesor.
石墨烯中电子传输的流体动力学方法:能量弛豫
DOI: --
发表时间: 2021
影响因子: 7.5
作者:
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影响因子: 44.1
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期刊: PHYSICAL REVIEW B
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