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 \(\hbox {YBa}_2\hbox {Cu}_3\hbox {O}_{6.95}\) (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 \(T_c\). 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.

近场辐射传热（NFRHT）管理可以使用高温超导体来实现。在这项工作中，我们提出了三种不同场景下两个\(\hbox {YBa}_2\hbox {Cu}_3\hbox {O}_{6.95}\) (YBCO) 板之间辐射传热的理论研究：两块板要么处于正常状态，要么处于超导状态，并且只有其中一块低于超导体临界温度\(T_c\) 。辐射传热是使用 Rytov 的波动电动力学理论计算的，而双流体模型则描述了超导材料的介电函数。我们的主要结果是，当一个或两个板超导时，NFRHT 受到显着抑制，这可以通过电荷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传热的一个关键而独特的特征是中红外载流子的大阻尼，它屏蔽了表面等离子体激发。