The generation of spin currents is a significant issue in spintronics. A spin current can be induced by a temperature gradient in the spin-dependent Seebeck effect, which has attracted growing interest over recent years. Herein we propose spin caloritronic devices based on magnetic graphether nanoribbons and investigate the spin thermoelectric properties by first-principles calculations. Owing to the symmetrical spin-resolved transmission spectra, our devices exhibit a robust spin-dependent Seebeck effect and could generate a pure spin current. Moreover, they manifest a high spin Seebeck coefficient and a giant spin figure of merit. Our findings demonstrate that graphether-nanoribbon-based devices possess remarkable spin thermoelectric performance, and might be promising candidates for spin caloritronics.

中文翻译：

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石墨醚纳米带中强大的自旋相关塞贝克效应和显着的自旋热电性能

自旋电流的产生是自旋电子学中的一个重要问题。自旋相关的塞贝克效应中的温度梯度可以引起自旋电流，近年来这引起了越来越多的兴趣。在此，我们提出了基于磁性石墨醚纳米带的自旋热电子器件，并通过第一性原理计算研究了自旋热电特性。由于对称的自旋分辨透射光谱，我们的器件表现出强大的自旋相关塞贝克效应，并且可以产生纯自旋电流。此外，它们表现出高自旋塞贝克系数和巨大的自旋品质因数。我们的研究结果表明，基于石墨醚纳米带的器件具有出色的自旋热电性能，可能是自旋热电子学的有希望的候选者。