有机铁磁体自旋输运和载流子特性理论研究  

THEORETICAL RESEARCH ON SPIN-DEPENDENT TRANSPORTAND CARRIER PROPERTIES IN ORGANIC FERROMAGNETS

作　　者：胡贵超[1] 苗圆圆 Hu Guichao;Miao Yuanyuan(School of Physics and Electronics,Shandong Normal University,250358,Jinan,China)

机构地区：[1]山东师范大学物理与电子科学学院,济南250358

出　　处：《山东师范大学学报（自然科学版）》2021年第3期217-233,共17页Journal of Shandong Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(11974215);山东省自然科学基金资助项目(ZR2019MA043).

摘　　要：有机铁磁体结合了铁磁体磁特性和有机材料软特性,在有机自旋电子学领域新型材料及器件设计方面具有广阔的应用前景.本文介绍了有机铁磁器件自旋输运方面的研究进展,讨论了基于有机铁磁的自旋过滤、多态磁电阻和自旋整流等新奇概念,阐明了有机铁磁体自身相互作用,如电子-晶格耦合和侧基自旋关联在以上现象中所扮演的角色.同时,对有机铁磁中的极化子特性及微观动力学过程进行了探究.这为未来设计新型有机铁磁器件提供了理论指导.Organic ferromagnets(OFs)are interesting materials because they combine ferromagnetism with organic properties,which are promising in designing new functional materials and devices in the field of organic spintronics.This paper introduces the theoretical research about spin-related electron transport in OF-based devices and the carrier property in OFs.The design of spin filters spin valves and spin rectifiers are reviewed.The effects of inherent interactions in OFs are emphasized,including strong electron-lattice interactions and the spin correlation betweenπelectrons and unpaired radical electrons.In addition,the spin-charge properties of polarons in OFs and the polaron dynamics under an external field are introduced.These results provide theoretical guide for future design of new functional OF devices.

关 键 词：有机自旋电子学 有机铁磁体 自旋输运 极化子 动力学 

分 类 号：O469[理学—凝聚态物理]