Due to the promising applications in energy harvesting, quantum heat engines at the nanoscale has attracted much interest in the past decades. Here the thermoelectric properties of a silicene based antiferromagnetic/ferromagnetic junction are investigated. The maximum power $P_{max}$ and the efficiency at maximum power $\eta \left(P_{max}\right)$ can be modulated by the gate voltage $V_g$, and be comparable to or even better than that of recent proposals based on two terminal graphene system. In addition, because of the specific spin and valley dependent band-matching tunneling mechanism, there exists a plateau in the $P_{max}$ $\left(\eta \left(P_{max}\right)\right)$ versus $V_g$ curves, which is sensitive to $T$ and vanishes at high $T$. This indicates the silicene junction can operate as a highly efficient quantum heat engine.

由于在能量收集方面的有前景的应用，纳米级的量子热机在过去几十年中引起了人们的极大兴趣。这里研究了基于硅的反铁磁/铁磁结的热电特性。最大功率${磷}_{米\mathrm{一种}X}$ 和最大功率时的效率 $\eta \left({磷}_{米\mathrm{一种}X}\right)$ 可以通过栅极电压调制 ${伏}_G$，并且可以与基于两端石墨烯系统的近期提案相媲美甚至更好。此外，由于特定的自旋和谷值相关的带匹配隧穿机制，在${磷}_{米\mathrm{一种}X}$ $\left(\eta \left({磷}_{米\mathrm{一种}X}\right)\right)$ 相对 ${伏}_G$ 对曲线敏感 $吨$ 并消失在高处 $吨$. 这表明硅烯结可以作为高效的量子热机运行。