Unknown

Dataset Information

0

Real-space observations of 60-nm skyrmion dynamics in an insulating magnet under low heat flow.


ABSTRACT: Thermal-current induced electron and spin dynamics in solids -dubbed "caloritronics"- have generated widespread interest in both fundamental physics and spintronics applications. Here, we examine the dynamics of nanometric topological spin textures, skyrmions driven by a temperature gradient ∇T or heat flow, that are evaluated through in-situ real-space observations in an insulating helimagnet Cu2OSeO3. We observe increases of the skyrmion velocity and the Hall angle with increasing ∇T above a critical value of ~ 13 mK/mm, which is two orders of magnitude lower than the ∇T required to drive ferromagnetic domain walls. A comparable magnitude of ∇T is also observed to move the domain walls between a skyrmion domain and the non-topological conical-spin domain from cold to hot regions. Our results demonstrate the efficient manipulation of skyrmions by temperature gradients, a promising step towards energy-efficient "green" spintronics.

SUBMITTER: Yu X 

PROVIDER: S-EPMC8382761 | biostudies-literature |

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC9756337 | biostudies-literature
| S-EPMC9564101 | biostudies-literature
| S-EPMC7138844 | biostudies-literature
| S-EPMC6016781 | biostudies-other
| S-EPMC4321174 | biostudies-other
| S-EPMC6140611 | biostudies-literature
| S-EPMC6434043 | biostudies-literature
| S-EPMC5548730 | biostudies-literature
| S-EPMC8613223 | biostudies-literature
| S-EPMC9078636 | biostudies-literature