Spin Seebeck effect (SSE), the generation of spin current from heat, has been extensively studied in a large variety of magnetic materials, including ferromagnets, antiferromagnets, paramagnets, and quantum spin liquids. In this paper, we report the study of the SSE in the single crystalline Pb2V3O9, a spin-gapped quantum magnet candidate with quasi-one-dimensional spin-1/2 chain. Detailed temperature and magnetic field dependences of the SSE are investigated, and the temperature-dependent critical magnetic fields show a strong correlation to the Bose-Einstein condensation phase of the quantum magnet Pb2V3O9. This work shows the potential of using spin current as a probe to study the spin correlation and phase transition properties in quantum magnets.
@article{arxiv.2201.04759,
title = {Spin Seebeck effect in quantum magnet Pb2V3O9},
author = {Wenyu Xing and Ranran Cai and Kodai Moriyama and Kensuke Nara and Yunyan Yao and Weiliang Qiao and Kazuyoshi Yoshimura and Wei Han},
journal= {arXiv preprint arXiv:2201.04759},
year = {2022}
}