Persistent spin current in mesoscopic ferrimagnetic spin ring

Jing Nuo Wu*, Ming Che Chang, Min Fong Yang

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

4 引文 斯高帕斯(Scopus)

摘要

Using a semiclassical approach, we study the persistent magnetization current of a mesoscopic ferrimagnetic ring in a nonuniform magnetic field. At zero temperature, there exists persistent spin current because of the quantum fluctuation of magnons, similar to the case of an antiferromagnetic spin ring. At a low temperature, the current shows activation behavior because of the field-induced gap. At a higher temperature, the magnitude of the spin current is proportional to temperature T, similar to the reported result of a ferromagnetic spin ring.

原文英語
文章編號172405
期刊Physical Review B - Condensed Matter and Materials Physics
72
發行號17
DOIs
出版狀態已發佈 - 2005 十一月 1

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學

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