DYNAMIC PROPERTIES OF THE SELF-TRAPPED EXCITON IN AGCL AS STUDIED BY TIME-RESOLVED EPR AT 95 GHZ

被引：23

作者：

POLUEKTOV, OG

DONCKERS, MCJM

BARANOV, PG

SCHMIDT, J

机构：

[1] IBM CORP,ALMADEN RES CTR,SAN JOSE,CA 95120

[2] AF IOFFE PHYS TECH INST,ST PETERSBURG 194021,RUSSIA

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.47.10226

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A study is made of self-trapped excitons in AgCl using cw and pulsed EPR techniques at 95 GHz. This type of spectroscopy, owing to its superior resolution and its time-resolved character, allows us to obtain detailed information about the properties of these excitons. The singlet-triplet splitting is determined with great accuracy and the result confirms that the exchange interaction, present between the electron and the hole making up the exciton, is very small. From a measurement of the dynamic properties of the exciton in the triplet state it appears that a tunneling process takes place between the different Jahn-Teller distorted configurations of the (AgCl6)4-complex at a rate of 10(5) s-1 at temperatures as low as 1.2 K.

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页码：10226 / 10234

页数：9

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