Interlayer Transport of Quasiparticles and Cooper Pairs in Bi 2 Sr 2 CaCu 2 O 8 + δ Superconductors
Interlayer Transport of Quasiparticles and Cooper Pairs in Bi 2 Sr 2 CaCu 2 O 8 + δ Superconductors
复制标题
Bi 2 Sr 2 CaCu 2 O 8 + δ超导体中准粒子和库对的层间传输
DOI：
10.1103/physrevlett.82.5345
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发表时间：
1999
影响因子：
8.6
通讯作者：
Los Alamos National Lab.
中科院分区：
文献类型：
--
作者：
Y. Latyshev;T. Yamashita;L. Bulaevskii;M. Graf;A. Balatsky;M. University;Los Alamos National Lab.
本文研究了用双面离子束处理技术从单晶晶须中制备的Bi_2Sr_2CaCu_2O_（8 +y）单晶中本征叠层结的c轴输运。这些样品的I-V特性的测量使我们能够获得的温度和电压的依赖性的准粒子的c-轴电导率在超导状态，约瑟夫森临界电流，和超导间隙。我们表明，BCS d-波模型在清洁的限制共振杂质散射的相干层间隧穿的显着贡献，令人满意地描述了低温和低能量的c轴输运的准粒子和库珀对。
We study the c-axis transport of stacked, intrinsic junctions in Bi2Sr2CaCu2O8+y single crystals, fabricated by the double-sided ion beam processing technique from single crystal whiskers. Measurements of the I-V characteristics of these samples allow us to obtain the temperature and voltage dependence of the quasiparticle c-axis conductivity in the superconducting state, the Josephson critical current, and the superconducting gap. We show that the BCS d-wave model in the clean limit for resonant impurity scattering with a significant contribution from coherent interlayer tunneling, describes satisfactorily the low temperature and low energy c-axis transport of both quasiparticles and Cooper pairs.