表面物理系列讲座（2）:

Surface plasmons in low-dimensions:

Insights from quantum-mechanical studies

Prof. Shiwu Gao 高世武

Department of Physics, University of Gothenburg, Sweden

时间：2011年5月9日（周一）下午4:00

地点：物理馆三楼学术报告厅323室

Abstract

The study of surface plasmons has attracted tremendous attention in recent research due to the potential applications in sensing, spectroscopy, energy harvesting and conversion, and quantum computing. In contrast to the rapid experimental progress, microscopic understanding of surface plasmons of real materials, in particular its coupling and interactions with other surface excitations, is still rather limited even for the simplest crystalline surfaces. In this talk, I will present a quantum-mechanical approach to surface plasmon and its coupling and damping by electrons. I will discuss in particular the electronic collectivity and quantum splitting, lifetime oscillation, symmetry-dependent screening in ultrathin films, and coupling of plasmon excitation to electron transfer and transport in nanogaps.