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Nonequilibrium superconductivity and quasiparticle dynamics studied by photoinduced activation of mm-wave absorption

被引：29
作者：
Feenstra, BJ
Schutzmann, J
vanderMarel, D
Pinaya, RP
Decroux, M
机构：
[1] UNIV GRONINGEN,CTR MAT SCI,NL-9747 AG GRONINGEN,NETHERLANDS
[2] UNIV GENEVA,DEPT PHYS MAT CONDENSEE,CH-1211 GENEVA 4,SWITZERLAND
来源：
PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 24期
关键词：
D O I：
10.1103/PhysRevLett.79.4890
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present a study of nonequilibrium superconductivity in DyBa2Cu3O7-delta using photoinduced activation crf mm-wave absorption. We monitor the time evolution of the thin film transmissivity at 5 cm(-1) subject to pulsed infrared radiation. In addition to a positive bolometric signal we observe a second, faster, decay with a sign opposite to the bolometric signal for T > 40 K. We attribute this to the unusual properties of quasiparticles residing near the nodes of an unconventional superconductor, resulting in a strong enhancement of the recombination time.
引用
收藏
页码：4890 / 4893
页数：4
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