Surface plasma waves over bismuth-vacuum interface

被引:2
|
作者
Jain, AP [1 ]
Parashar, J [1 ]
机构
[1] Samrat Ashok Technol Inst, Dept Appl Phys, Vidisha 464001, India
来源
PRAMANA-JOURNAL OF PHYSICS | 2003年 / 61卷 / 03期
关键词
surface plasma waves; bismuth; semimetals; plasma processing;
D O I
10.1007/BF02705485
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A surface plasma wave (SPW) over bismuth-vacuum interface has a signature of mass anisotropy of free electrons. For SPW propagation along the trigonal axis there is no birefringence. The frequency cutoff of SPW omega(cutoff) = omega(p)/root2(epsilonL + epsilon) lies in the far infrared region and can be accessed using free electron laser. The damping rate of waves at low temperatures is low. The surface plasma wave may be excited by an electron beam of current similar to100 mA propagating parallel to the interface in its close proximity.
引用
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页码:625 / 631
页数:7
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