Optically reversed Peierls transition in crystals of Cu(dicyanoquinonediimine)2

被引：19

作者：

Karutz, FO ^{[1
]}

von Schutz, JU ^{[1
]}

Wachtel, H ^{[1
]}

Wolf, HC ^{[1
]}

机构：

[1] Univ Stuttgart, Inst Phys 3, D-70550 Stuttgart, Germany

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.81.140

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A fast photoinduced transient switching of partly deuterated Cu(2,5-dimethyl-N,N'-dicyanoquinonediimine)(2) [Cu(DCNQI)(2)] radical ion salt crystals is analyzed as a reversed Peierls transition. Switching from the insulating state into the conducting state is performed on a time scale below 20 ps. Conductivity indirectly proves that the Peierls distortion of the insulating phase is efficiently canceled by photoexcitation. Evaluation of the electrical transients shows that the switched volume can be at least 100 times larger than the directly photoexcited part of the crystals. We propose a reversible structural change which is induced by an acoustic wave traveling through large parts of the sample volume.

引用

页码：140 / 143

页数：4

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