Electron transport in nanostructures controlled by phase-locked single-cycle light pulses (B08*)

由锁相单周期光脉冲控制的纳米结构中的电子传输 (B08*)

• 批准号: 285680458
• 金额: --
• 依托单位: Physics and Materials Science Research Unit (PHYMS)
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/285680458?language=en
• 关键词: Electron; transport; nanostructures; controlled; phase

The project aims at coherent control of charge currents in nanojunctions triggered by phase-locked single cycles of light. In case of a cosine-like phase, the incident optical field combined with nonlinear current-voltage characteristics causes a symmetry break, resulting in a net current of electrons. Lateral constriction by the feedgaps of plasmonic circuits or in semiconductor resonant tunneling structures allows working in the limit of single or few electrons transferred per pulse. The nanometer and femtosecond spatiotemporal confinement enables transport studies in a new range of current densities where e.g. Coulomb repulsion may be effective even at room temperature.

该项目旨在对由锁相单周期光触发的纳米结中的电荷电流进行相干控制。在类余弦相位的情况下，入射光场与非线性电流-电压特性相结合会导致对称性破缺，从而产生电子的净电流。等离子体电路或半导体共振隧穿结构中的馈电间隙的横向收缩允许在每个脉冲传输单个或很少电子的限制下工作。纳米和飞秒时空约束使得在新的电流密度范围内研究输运成为可能，例如库仑排斥即使在室温下也可能是有效的。