Castillo-López S G, Pirruccio G, Villarreal C, Esquivel-Sirvent R
Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, Mexico, 01000, Mexico.
Sci Rep. 2020 Sep 30;10(1):16066. doi: 10.1038/s41598-020-73017-z.
Near-field radiative heat transfer (NFRHT) management can be achieved using high-temperature superconductors. In this work, we present a theoretical study of the radiative heat transfer between two [Formula: see text] (YBCO) slabs in three different scenarios: Both slabs either in the normal or superconducting state, and only one of them below the superconductor critical temperature [Formula: see text]. The radiative heat transfer is calculated using Rytov's theory of fluctuating electrodynamics, while a two-fluid model describes the dielectric function of the superconducting materials. Our main result is the significant suppression of the NFRHT when one or both of the slabs are superconducting, which is explained in terms of the detailed balance of the charge carriers density together with the sudden reduction of the free electron scattering rate. A critical and unique feature affecting the radiative heat transfer between high-temperature superconductors is the large damping of the mid-infrared carriers which screens the surface plasmon excitation.
近场辐射热传递（NFRHT）管理可以通过高温超导体来实现。在这项工作中，我们对两个钇钡铜氧（YBCO）平板在三种不同情况下的辐射热传递进行了理论研究：两个平板均处于正常态或超导态，以及只有其中一个平板低于超导体临界温度[公式：见原文]。辐射热传递使用里托夫波动电动力学理论进行计算，而双流体模型描述超导材料的介电函数。我们的主要结果是，当一个或两个平板处于超导态时，近场辐射热传递会受到显著抑制，这可以通过载流子密度的详细平衡以及自由电子散射率的突然降低来解释。影响高温超导体之间辐射热传递的一个关键且独特的特征是中红外载流子的大幅阻尼，它会屏蔽表面等离子体激元激发。
