NEW THEORETICAL-MODEL FOR THE DIAMOND 1S CORE EXCITON

被引：33
|
作者：
JACKSON, KA [1 ]
PEDERSON, MR [1 ]
机构：
[1] USN, RES LAB, DIV CONDENSED MATTER & RADIAT SCI, COMPLEX SYST THEORY BRANCH, WASHINGTON, DC 20375 USA
来源：
PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 18期
关键词：
D O I：
10.1103/PhysRevLett.67.2521
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The binding energy of the diamond 1s core exciton has a measured value of 0.2 eV, in marked contrast to the 1.7-eV binding energy of the physically similar nitrogen donor in diamond. Using the local-density approximation to study the core exciton, we find the shallow exciton binding energy is explained by dipole selection rules which prohibit occupation of a deep exciton gap state in single-photon excitation. This deep state has not yet been observed experimentally, and the calculation predicts a binding energy in the range of 0.8-1.7 eV.
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收藏
页码：2521 / 2524
页数：4
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