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
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.
引用
收藏
页码:2521 / 2524
页数:4
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