FEMTOSECOND SPECTROSCOPIC STUDIES OF THE LATTICE-RELAXATION INITIATED BY INTERACTING ELECTRON-HOLE PAIRS UNDER RELAXATION IN ALKALI-HALIDES

被引：41

作者：

SHIBATA, T ^{[1
]}

IWAI, S ^{[1
]}

TOKIZAKI, T ^{[1
]}

TANIMURA, K ^{[1
]}

NAKAMURA, A ^{[1
]}

ITOH, N ^{[1
]}

机构：

[1] NAGOYA UNIV,FAC ENGN,DEPT APPL PHYS,FURO,CHIKUSA 46401,JAPAN

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.49.13255

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Femtosecond time-resolved spectroscopic studies have been carried out to reveal the relaxation of free electron-hole pairs in KBr. We find that a hole is relaxed to a self-trapped hole with a delay of 10 ps. Two relaxation channels of an electron-hole pair are found: one lasts for 40 ps and leads competitively to a self-trapped exciton (STE) or an F-H pair; the other terminates within 6 ps, bypasses the STE, and leads to an F-H pair. The former channel is ascribed to the interplay between an electron and a self-trapped hole, while the latter demonstrates the dynamic interplay of an electron and a hole during their lattice relaxation.

引用

页码：13255 / 13258

页数：4

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