摘要
研究了电子隧穿几类磁电垒结构的自旋极化输运性质 ,导出统一的传输概率公式 ,揭示了非均匀磁场的分布与自旋过滤的关系 ,同时表明采用有效朗德因子较大的半导体材料可以显著增强磁电垒结构的自旋过滤效果 .
We investigated spin-polarized transport properties for electrons tunneling through a few of magnetic-electric barrier structures. The general formula of the transmission was derived. The relationship between the spin-polarization and the distribution of the nonhomogeneous magnetic field was revealed. Furthermore, our results also indicated that the spin-filtering effect can be enhanced significantly when a semiconductor with a larger g* factor is used.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第10期2569-2575,共7页
Acta Physica Sinica
基金
清华大学重点基础研究基金 (批准号 :JZ2 0 0 2 0 0 5)
国家自然科学基金 (批准号 :10 0 0 4 0 0 6 )资助的课题~~
