# Seebeck Effect in Nanomagnets

## TL;DR

This paper develops a theoretical framework for the Seebeck effect in nanomagnets, highlighting the influence of spin accumulation and transverse temperature gradients on thermopower at nanoscale dimensions.

## Contribution

It introduces a comprehensive theory accounting for spin accumulation and transverse effects in nanomagnets, supported by ab initio calculations on magnetic alloys.

## Key findings

- Spin accumulation significantly impacts thermopower in nanomagnets.
- Transverse temperature gradients modify the Seebeck effect.
- Ab initio results confirm theoretical predictions.

## Abstract

We present a theory of the Seebeck effect in nanomagnets with dimensions smaller than the spin diffusion length, showing that the spin accumulation generated by a temperature gradient strongly affects the thermopower. We also identify a correction arising from the transverse temperature gradient induced by the anomalous Ettingshausen effect and an induced spin-heat accumulation gradient. The relevance of these effects for nanoscale magnets is illustrated by ab initio calculations on dilute magnetic alloys.