Towards high-temperature coherence-enhanced transport in heterostructures of a few atomic layers
Towards high-temperature coherence-enhanced transport in heterostructures of a few atomic layers
复制标题
几个原子层异质结构中的高温相干增强输运
作者：
Chahan M. Kropf;Angelo Valli;P. Franceschini;G. Celardo;Massimo Capone;C. Giannetti;F. Borgonovi
利用量子相干来显著提高在环境条件下工作的固态设备中电荷传输效率的可能性，将为颠覆性的技术应用铺平道路。在这项工作中，我们解决了受退相和现场库仑相互作用影响的光生电子激发的量子输运问题。我们发现，通过利用“超辐射”现象，可以优化到代表金属收集器的一系列态的输运。我们证明了这是一种相干效应，在一个与少数单层过渡金属氧化物(TMO)异质结构的实际实现相一致的参数范围内，它对退相和电子-电子相互作用是健壮的。
The possibility to exploit quantum coherence to strongly enhance the efficiency of charge transport in solid state devices working at ambient conditions would pave the way to disruptive technological applications. In this work, we tackle the problem of the quantum transport of photogenerated electronic excitations subject to dephasing and on-site Coulomb interactions. We show that the transport to a continuum of states representing metallic collectors can be optimized by exploiting the "superradiance" phenomena. We demonstrate that this is a coherent effect which is robust against dephasing and electron-electron interactions in a parameters range that is compatible with actual implementation in few monolayers transition-metal-oxide (TMO) heterostructures.