电子学报
電子學報
전자학보
ACTA ELECTRONICA SINICA
2009年
12期
2762-2765
,共4页
磁电垒%共振隧穿%波矢过滤%传输概率%电导率
磁電壘%共振隧穿%波矢過濾%傳輸概率%電導率
자전루%공진수천%파시과려%전수개솔%전도솔
magnefic-eleclric barrier%resonant tunneling%wave-vector filtering%transmission%conductance
本文对反平行磁电垒结构中二维电子气体的输运性质进行了详细的研究.利用传递矩阵的方法计算了电子气体隧穿磁电垒结构的传输概率和电导率,讨论了电势垒高度的变化对传输概率和电导率的影响.结果表明,该系统中不存在自旋过滤和自旋极化现象,电子气体可实现理想的共振隧穿,波矢过滤等.
本文對反平行磁電壘結構中二維電子氣體的輸運性質進行瞭詳細的研究.利用傳遞矩陣的方法計算瞭電子氣體隧穿磁電壘結構的傳輸概率和電導率,討論瞭電勢壘高度的變化對傳輸概率和電導率的影響.結果錶明,該繫統中不存在自鏇過濾和自鏇極化現象,電子氣體可實現理想的共振隧穿,波矢過濾等.
본문대반평행자전루결구중이유전자기체적수운성질진행료상세적연구.이용전체구진적방법계산료전자기체수천자전루결구적전수개솔화전도솔,토론료전세루고도적변화대전수개솔화전도솔적영향.결과표명,해계통중불존재자선과려화자선겁화현상,전자기체가실현이상적공진수천,파시과려등.
This paper describes transport properties of two dimensional electron gases in antiparallel magnetic-electric barrier structure.By means of transfer matrix method, we obtain the explicit expressions of electron transmission probability and conduc-tance for a magnetic-electric barrier structure and discuss the influence of different values of the electric potential barrier height on them. The results indicate that this system does not possess any spin filtering and spin polarization and electron gases can realize per-fect resonant tunneling and wave-vector filtering.
