铁电与多铁隧道结研究进展

Advances in Ferroelectric and Multiferroic Tunnel Junctions

将铁电性或多铁性与量子隧穿效应结合,可以形成铁电或多铁隧道结等新型信息功能器件,它们在能耗、效率和处理速度上具有显著优势。本文回顾了铁电与多铁隧道结的研究历史,从理论和实验两方面重点介绍了铁电隧道结概念的起源、纳米铁电性的实现、铁电体中的载流子传导机制、巨电致电阻效应的起源、多铁性在隧道结上的应用等,同时结合铁电和多铁隧道结的最新研究进展对它们的发展前景作出了展望。

Ferroelectric and multiferroic tunnel junctions have aroused considerable interest due to their overwhelming advantages in the next-generation of digital information storage, such as low energy consumption and high speed processing. In this article, we briefly review recent progress relating to ferroelectric and multiferroic tunnel junctions. Both experimental and theoretical improve- ments are described, including the realization of ferroelectricity at the nanoscale, the concept of ferroelectric tunnel junctions, the conduction mechanism inferroelectrics, the giant electroresis- tance, and the application of multiferroicity in tunnel junctions. In addition, the future prospect of ferroelectric and multiferroic tunnel junctions is presented