FEMTOSECOND OPTICAL-DETECTION OF QUASI-PARTICLE DYNAMICS IN HIGH-TC YBA2CU3O7-DELTA SUPERCONDUCTING THIN-FILMS

被引：220

作者：

HAN, SG ^{[1
]}

VARDENY, ZV ^{[1
]}

WONG, KS ^{[1
]}

SYMKO, OG ^{[1
]}

KOREN, G ^{[1
]}

机构：

[1] TECHNION ISRAEL INST TECHNOL,DEPT PHYS,IL-32000 HAIFA,ISRAEL

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.65.2708

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Femtosecond dynamics of photogenerated quasiparticles in YBa2Cu3O7- superconducting thin films shows, at TTc, two main electronic processes: (i) quasiparticle avalanche production during hot-carrier thermalization, which takes about 300 fsec; (ii) recombination of quasiparticles to form Cooper pairs, which is completed within 5 psec. In contrastr, nonsuperconducting epitaxial films such as PrBa2Cu2O7 and YBa2Cu3O6 show regular picosecond electronic response. © 1990 The American Physical Society.

引用

页码：2708 / 2711

页数：4

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