We studied the effect of polar vibration modes on optical absorption of polaron and the rate of disorder in a graphene monolayer. Our investigation focused more particularly on the role played by phonons. We found that the amplitude of optical absorption decreases with increasing photon energy and with increasing magnetic field. We also found that the rate of local disorder in the system increases with increasing temperature and with increasing graphene-substrate distance. However, it decreases with the increase in magnetic field. These observations show that the absorption of a polaron by the photon creates a relative disorder in the graphene lattice. It is also shown that entropy and optical absorption of polaron strongly depend on the type of substrates.

中文翻译：

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单层石墨烯中极化子的光吸收和 Tsallis 熵

我们研究了极性振动模式对极化子的光吸收和石墨烯单层中的无序率的影响。我们的调查更侧重于声子所起的作用。我们发现光吸收的幅度随着光子能量的增加和磁场的增加而减小。我们还发现系统中的局部无序率随着温度的升高和石墨烯-基板距离的增加而增加。但随着磁场的增加而减小。这些观察表明，光子对极化子的吸收在石墨烯晶格中产生了相对的无序。还表明极化子的熵和光吸收强烈依赖于底物的类型。