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Spin caloritronics in a hybrid nanomagnet
by Long Bai, Furong Tang, Rong Zhang
Submission summary
| Authors (as registered SciPost users): | Rong Zhang |
| Submission information | |
|---|---|
| Preprint Link: | scipost_202412_00048v1 (pdf) |
| Date submitted: | Dec. 31, 2024, 9:52 a.m. |
| Submitted by: | Rong Zhang |
| Submitted to: | SciPost Physics |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approach: | Theoretical |
Abstract
Spin caloritronics focuses on the interplay of charge, heat and spins. Herein, we propose a spin-related thermoelectric device based on a hybrid nanomagnet in order to explore physical mechanisms and potential applications for heat-spin-charge interconversion. The evolution characteristics of thermoelectric coefficients in physically allowed parameter regions are investigated at length. Interestingly, not only is the Wiedemann-Franz strongly violated, but also a pure spin-Seebeck effect can be generated, which can be utilized to engineer a pure spin-current generator. Additionally, a considerable spin thermoelectric efficiency can be achieved, and the direction of thermally-induced spin currents can be manipulated, which provides valuable information about thermoelectric characteristics mediated by electron spins. Our results offer a deepgoing insight into spin caloritronc properties of hybrid thermoelectric devices based on nanomagnets.
Author indications on fulfilling journal expectations
- Provide a novel and synergetic link between different research areas.
- Open a new pathway in an existing or a new research direction, with clear potential for multi-pronged follow-up work
- Detail a groundbreaking theoretical/experimental/computational discovery
- Present a breakthrough on a previously-identified and long-standing research stumbling block