摘要
根据Hg1-xMnxTe的光学吸收光谱,用Kana模型详细分析了重空穴和导带间的直接跃迁导致的本征光吸收。研究表明当光吸收系数α<103 cm-1时,在导带中没有出现从抛物线色散规律引起的偏离,因而保证了Hg1-xMnxTe带宽的精确确定。
Intrinsic optical absorption in Hg1-xMnxTe caused by direct electron transitions between the heavy-hole and conduction bands is satisfactory described in terms of Kana＇s model in the optical absorption spectra of Hg1-xMnxTe. In the region of absorption coefficient a〈10a cm^-1 the deviation from the parabolic dispersion low in the conduction band is not exhibited. This allows the Hg1-xMnxTe bandgap to be determined with a sufficient accuracy.
出处
《红外与激光工程》
EI
CSCD
北大核心
2007年第4期450-452,共3页
Infrared and Laser Engineering
基金
湖南省自然科学基金资助项目(04JJ3030)
湖南省青年科学基金资助项目(03b006)
长沙理工大学科研基金资助项目(521299005)
