通过类 Fano 干涉效应在 STM 测量中探测交换相互作用
介观与纳米尺度物理
2007-07-18 v2
摘要
我们探讨了扫描隧道显微镜（STM）对纳米尺度系统（例如二能级系统）测量中的类 Fano 干涉效应。这些系统的共同特征是，二阶隧穿贡献引起了干涉效应，导致系统在特定能量下的透射受到抑制。这种受抑制的透射既可以在微分电导中测量，也可以在其偏压电压导数中测量。
引用
@article{arxiv.0705.2230,
title = {Detection of exchange interaction in STM measurements through Fanolike interference effects},
author = {J. Fransson},
journal= {arXiv preprint arXiv:0705.2230},
year = {2007}
}
备注
9 pages, 3 figures, submitted: in addition to the results published in Phys. Rev. B, 75, 153309 (2007), this paper contains a more thorough discussion on the used transport formalism, studies of asymmetric couplings to the substrate, and discussion of non-resonant levels. The non-resonant case is related to spin-dependent tunneling