arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2201.11909cond-mat.mes-hall
收藏

利用热分布器进行非局部热输运模拟

Non-local thermal transport modeling using the thermal distributor

Ali Kefayati, Philip B. Allen, Vasili Perebeinos

摘要:

准弹道状态下的热输运不仅由局部温度$T(r)$或其梯度$\nabla T(r)$确定,而且还由相邻点处的温度分布确定。为了准确描述非局部效应对热输运的影响,我们采用了热分布器,$Θ(r,r')$,它提供了系统在点$r$的温度响应到点$r'$的热输入。我们从线性化的Peierls-Boltzmann方程(LPBE)和Peierls-Boltzmann方程的弛豫时间近似(RTA)确定热分布器,并利用它们来描述准弹道石墨烯器件中的热输运。

英文摘要:

Thermal transport in a quasi-ballistic regime is determined not only by the local temperature $T(r)$, or its gradient $\nabla T(r)$, but also by temperature distribution at neighboring points. For an accurate description of non-local effects on thermal transport, we employ the thermal distributor, $Θ(r,r')$, which provides the temperature response of the system at point $r$ to the heat input at point $r'$. We determine the thermal distributors from the linearized Peierls-Boltzmann equation (LPBE) and the relaxation time approximation (RTA) of the Peierls-Boltzmann equation and employ them to describe thermal transport in quasi-ballistic graphene devices.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑