arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.15183cond-mat.mes-hall
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非平衡开放系统中量子共振对局域温度的影响

Effect of quantum resonances on local temperature in nonequilibrium open systems

Xiangzhong Zeng, Lyuzhou Ye, Daochi Zhang, Rui-Xue Xu, Xiao Zheng, Massimiliano Di Ventra

摘要:

测量开放体系的局部温度是研究纳米体系局部热力学性质的一种新方法。已经提出了一个操作协议,以确定本地温度耦合探头的系统,然后最小化的扰动,以一定的本地可观察的探测系统。在本文中,我们首先证明了这样的局部温度是唯一的一个单一的量子杂质和给定的本地可观察。然后,我们将该协议扩展到开放系统的多个量子杂质,提出了一个局部最小扰动条件(LMPC)。量子共振对局部温度的影响,阐明了解析和数值结果。特别是,我们证明了量子共振可能会引起强烈的振荡的局部温度沿多杂质链下的热偏置。

英文摘要:

Measuring local temperatures of open systems out of equilibrium is emerging as a novel approach to study the local thermodynamic properties of nanosystems. An operational protocol has been proposed to determine the local temperature by coupling a probe to the system and then minimizing the perturbation to a certain local observable of the probed system. In this paper, we first show that such a local temperature is unique for a single quantum impurity and the given local observable. We then extend this protocol to open systems consisting of multiple quantum impurities by proposing a local minimal perturbation condition (LMPC). The influence of quantum resonances on the local temperature is elucidated by both analytic and numerical results. In particular, we demonstrate that quantum resonances may give rise to strong oscillations of the local temperature along a multiimpurity chain under a thermal bias.

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。

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