Abstract This work treats entropy and heat capacity of a monolayer transition metal dichalcogenide quantum dot under magnetic field using the canonical ensemble approach. We consider four following TMDs: MoSe 2 , MoS 2 , WSe 2 and W S 2 . At low temperature heat capacity increases steadily, shows a shoulder and thereafter becomes constant for high temperatures. MoSe 2 absorbs the most energy near absolute zero temperature and W S 2 absorbs the least energy at room temperature. Mo materials perform better than W materials at low temperatures and also at room temperature but require a higher magnetic field to be excited. As a result, W S 2 require the least magnetic field and MoSe 2 the highest for both temperatures. Furthermore, at low temperatures it is observed that the entropy decreases with increasing magnetic field, while at higher temperatures, it is weakly dependent on the magnetic field; magnetic field can be used to modulate the thermodynamic properties of TMDs

中文翻译：

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磁场存在下单层过渡金属二硫属化物 (TMD) 量子点的热力学性质

摘要 这项工作使用规范系综方法处理磁场下单层过渡金属二硫属化物量子点的熵和热容。我们考虑以下四种TMD：MoSe 2 、MoS 2 、WSe 2 和WS 2 。在低温下热容量稳定增加，显示出一个肩峰，然后在高温下变得恒定。MoSe 2 在绝对零温度附近吸收的能量最多，而WS 2 在室温下吸收的能量最少。Mo 材料在低温和室温下的性能优于 W 材料，但需要更高的磁场来激发。因此，对于两种温度，WS 2 需要的磁场最少，而MoSe 2 需要的磁场最高。此外，在低温下观察到熵随着磁场的增加而减少，而在较高温度下，它对磁场的依赖性较弱；磁场可用于调节 TMD 的热力学特性