Anisotropic Thermal Magnetoresistance for an Active Control of Radiative Heat Transfer,ACS Photonics

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Anisotropic Thermal Magnetoresistance for an Active Control of Radiative Heat Transfer
ACS Photonics ( IF 6.5 ) Pub Date : 2018-01-07 00:00:00 , DOI: 10.1021/acsphotonics.7b01223
Ricardo M. Abraham Ekeroth _{1,

2} , Philippe Ben-Abdallah _{3,

4} , Juan Carlos Cuevas _{5,

6} , Antonio García-Martín ₁

Affiliation

The discovery that the near-field radiative heat transfer enables to overcome the limit set by Planck’s law holds the promise to have an impact in different nanotechnologies that make use of thermal radiation, and the challenge now is to find strategies to actively control and manipulate this near-field thermal radiation. Here, we predict a huge anisotropic thermal magnetoresistance (ATMR) in the near-field radiative heat transfer between magneto-optical particles when the direction of an external magnetic field is changed with respect to the heat current direction. We illustrate this effect with the case of two InSb particles where we find that the ATMR amplitude can reach values of up to 800% for a magnetic field of 5 T, which is many orders of magnitude larger than its spintronic analogue. This thermomagnetic effect could find broad applications in the field of ultrafast thermal management as well as magnetic and thermal remote sensing.

中文翻译：

主动控制辐射传热的各向异性热磁阻

近场辐射传热能够克服普朗克定律设定的限制的发现，有望对利用热辐射的各种纳米技术产生影响，而现在的挑战是寻找积极控制和操纵这种方法的策略。近场热辐射。在此，当外部磁场的方向相对于热电流方向发生变化时，我们预计磁光粒子之间的近场辐射热传递中将存在巨大的各向异性热磁阻（ATMR）。我们以两个InSb粒子为例说明了这种影响，我们发现对于5 T的磁场，ATMR振幅可以达到高达800％的值，该磁场比其自旋电子类似物大许多数量级。

更新日期：2018-01-07

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