CAJ | 학술논문

自旋电子学指通过控制和利用电子自旋(而不是电荷)获得一系列新颖性能的研究领域.自旋电子器件已经成功地应用于计算机硬盘驱动器和磁性随机存储器,对IT行业的发展产生了深远的影响.这些应用都是基于自旋极化传输效应,即具有固定自旋取向的电子穿过磁性异质结所发生的相关效应.目前,在将微波和自旋极化传输联系起来的自旋器件中的自旋动力学研究,为研制尺寸远远小于微波波长的新型微波器件提供了巨大的潜能.在这篇综述中,首先简单地介绍了自旋器件的概念;接着研究了微波实验来研究自旋电子器件的微波辅助翻转和自旋泵浦现象.前者将能够开发出高密度的计算机硬盘,而后者,结合直接电子检测技术,将能够实现小型化的无源微波探测器.
자선전자학지통과공제화이용전자자선(이불시전하)획득일계렬신영성능적연구영역.자선전자기건이경성공지응용우계산궤경반구동기화자성수궤존저기,대IT행업적발전산생료심원적영향.저사응용도시기우자선겁화전수효응,즉구유고정자선취향적전자천과자성이질결소발생적상관효응.목전,재장미파화자선겁화전수련계기래적자선기건중적자선동역학연구,위연제척촌원원소우미파파장적신형미파기건제공료거대적잠능.재저편종술중,수선간단지개소료자선기건적개념;접착연구료미파실험래연구자선전자기건적미파보조번전화자선빙포현상.전자장능구개발출고밀도적계산궤경반,이후자,결합직접전자검측기술,장능구실현소형화적무원미파탐측기.
The spintronics refers to the research area where electron spins, in additional to or sometimes in place of electron charges, are controlled and manipulated to give rise to an array of properties. Spintronic devices have already found applications in computer hard drive and magnetic random access memory, profoundly changed the information technology industry. These applications utilize the spin polarized transport where electron with fixed spin direction transverse through magnetic heterostructures. More recently, investigation of spin dynamics in spintronic device relates microwave with spin polarized transport, offering significant potential for novel microwave devices with dimension far less than the microwave wavelength. In this "review-like" article, we first briefly introduce the concept of spintronic devices. Microwave experiments with spintronic devices are discussed next in the context of microwave assisted switching and spin pumping phenomenon. The former has potential for developing high density computer hard disk, the latter, with the development of direct electronic detection, could lead to miniaturized and passive microwave detector.