Caustics due to a negative refractive index in circular graphene p-n junctions

被引：103

作者：

Cserti, Jozsef ^{[1
]}

Palyi, Andras ^{[1
]}

Peterfalvi, Csaba ^{[1
]}

机构：

[1] Eotvos Lorand Univ, Dept Phys Complex Syst, H-1117 Budapest, Hungary

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.99.246801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that the wave functions form caustics in circular graphene p-n junctions which in the framework of geometrical optics can be interpreted with a negative refractive index.

引用

页数：4

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