Quantum Coherent Multielectron Processes in an Atomic Scale Contact
Quantum Coherent Multielectron Processes in an Atomic Scale Contact
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DOI：
10.1103/physrevlett.119.066803
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发表时间：
2017-08-10
影响因子：
8.6
通讯作者：
Berndt, Richard
中科院分区：
文献类型：
--
作者：
Peters, Peter-Jan;Xu, Fei;Berndt, Richard
在 6 K 下对 Ag(111) 表面操作的扫描隧道显微镜发出的光进行分析，从低电导到接近电导量子的值。在样本电压 V 下记录的光谱显示光子能量 hv > 2eV 的发射。通过局域等离子体激元模式相干相互作用的电子模型再现了实验数据，特别是 eV 和 2eV 处光谱中的扭结以及低电导和中等电导下的强度缩放。
The light emission from a scanning tunneling microscope operated on a Ag(111) surface at 6 K is analyzed from low conductances to values approaching the conductance quantum. Optical spectra recorded at sample voltages V reveal emission with photon energies hv > 2eV. A model of electrons interacting coherently via a localized plasmon-polariton mode reproduces the experimental data, in particular, the kinks in the spectra at eV and 2eV as well as the scaling of the intensity at low and intermediate conductances.