无序导体之间的近场传热

IF 0.6 4区物理与天体物理 Q4 PHYSICS, APPLIED

Low Temperature Physics Pub Date : 2023-12-13 DOI:10.1063/10.0022365

Alex Kamenev

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引用次数: 0

摘要

研究了电磁场近场波动对传热的影响。在金属的情况下，后者主要是由电子密度的热波动之间的库仑相互作用。结果表明，电子的弹性散射导致密度波动的扩散传播，从而导致辐射定律的质变。清洁金属之间的热流密度遵循类似斯蒂芬-玻尔兹曼的T4依赖关系，而无序导体之间的热交换明显增强，并在低温下尺度为T3。

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Near-field heat transfer between disordered conductors

Heat transfer mediated by near-field fluctuations of the electromagnetic field was studied. In the case of metals, the latter are dominated by Coulomb interactions between thermal fluctuations of electronic density. It was shown that an elastic scattering of electrons, leading to a diffusive propagation of density fluctuations, results in a qualitative change of the radiation law. While the heat flux between clean metals follows the Stefan–Boltzmann-like T4 dependence, the heat exchange between disordered conductors is significantly enhanced and scales as T3 at low temperatures.

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来源期刊

Low Temperature Physics 物理-物理：应用

CiteScore

1.20

自引率

25.00%

发文量

138

审稿时长

3 months

期刊介绍： Guided by an international editorial board, Low Temperature Physics (LTP) communicates the results of important experimental and theoretical studies conducted at low temperatures. LTP offers key work in such areas as superconductivity, magnetism, lattice dynamics, quantum liquids and crystals, cryocrystals, low-dimensional and disordered systems, electronic properties of normal metals and alloys, and critical phenomena. The journal publishes original articles on new experimental and theoretical results as well as review articles, brief communications, memoirs, and biographies. Low Temperature Physics, a translation of the copyrighted Journal FIZIKA NIZKIKH TEMPERATUR, is a monthly journal containing English reports of current research in the field of the low temperature physics. The translation began with the 1975 issues. One volume is published annually beginning with the January issues.