Electromagnetically Induced Negative Refraction Driven by Microwave Field in Four-level System
LI Xiao-li,WANG Feng-xiang,ZHANG Lian-shui
Journal of Hebei University (Natural Science Edition) . 2011, (6): 596 -601 .  DOI: 10.3969/j.issn.1000-1565.2011.06.008