New type of Fano resonant tunneling via Anderson impurities in superlattice | |
Liu J![]() | |
刊名 | europhysics letters
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2006 | |
卷号 | 74期号:5页码:875-881 |
关键词 | ELECTRIC-FIELD SEMICONDUCTOR SUPERLATTICES LOCALIZATION |
ISSN号 | 0295-5075 |
通讯作者 | xu, sj, univ hong kong, dept phys, pokfulam rd, hong kong, hong kong, peoples r china. e-mail: sjxu@hkucc.hku.hk |
中文摘要 | the spectrum of differential tunneling conductance in si-doped gaas/alas superlattice is measured at low electric fields. the conductance spectra feature a zero-bias peak and a low-bias dip at low temperatures. by taking into account the quantum interference between tunneling paths via superlattice miniband and via coulomb blockade levels of impurities, we theoretically show that such a peak-dip structure is attributed to a fano resonance where the peak always appears at the zero bias and the line shape is essentially described by a new function \xi\/\xi\+1 with the asymmetry parameter q approximate to 0. as the temperature increases, the peak-dip structure fades out due to thermal fluctuations. good agreement between experiment and theory enables us to distinguish the zero-bias resonance from the usual kondo resonance. |
学科主题 | 半导体物理 |
收录类别 | SCI |
语种 | 英语 |
公开日期 | 2010-04-11 |
内容类型 | 期刊论文 |
源URL | [http://ir.semi.ac.cn/handle/172111/10640] ![]() |
专题 | 半导体研究所_中国科学院半导体研究所(2009年前) |
推荐引用方式 GB/T 7714 | Liu J. New type of Fano resonant tunneling via Anderson impurities in superlattice[J]. europhysics letters,2006,74(5):875-881. |
APA | Liu J.(2006).New type of Fano resonant tunneling via Anderson impurities in superlattice.europhysics letters,74(5),875-881. |
MLA | Liu J."New type of Fano resonant tunneling via Anderson impurities in superlattice".europhysics letters 74.5(2006):875-881. |
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