The thermo-spin conversion provides new concepts for further developing the green energy-harvesting technology because spin can be controlled with minimal energy in nanostructures. Through theoretical analysis of thermo-spin generation, transportation and conversion in ferromagnet/non-ferromagnet/heavy metal (FM/NM/HM) vertical structures, we found that the output transverse thermo-spin voltage is independent of the structure's width, but varies in a linear function with the structure's length. To validate our predictions, we fabricated the thermo-spin devices with a CoFeAl/Cu/Pt structure. Our results indicate that FM/NM/HM structures can be utilized to design flexible thermo-spin conversion devices.
@article{arxiv.2401.07755,
title = {Optimization of thermo-spin voltage in vertical nanostructures by geometrical means},
author = {Fupeng Gao and Shaojie Hu and Dawei Wang and Takashi Kimura},
journal= {arXiv preprint arXiv:2401.07755},
year = {2024}
}