Advances in YBa2Cu3O7-δ grain boundary biepitaxial Josephson junctions:: Transport properties and mesoscopic effects

被引：2
作者：
Stornaiuolo, Daniela
Born, Detlef
Dalena, Davide
Gambale, Emilia
Rotoli, Giacomo
Bauch, Thilo
Tagliacozzo, Arturo
Barone, Antonio
Lombardi, Filomena
Tafuri, Francesco
机构：
[1] INFM, CNR, I-80125 Naples, Italy
[2] Univ Naples Federico II, Dipartimento Sci Fis, I-80125 Naples, Italy
[3] Univ Naples 2, Dipartimento Ingn Informaz, Aversa, CE, Italy
[4] Univ Aquila, CNISM, I-67040 Laquila, Italy
[5] Univ Aquila, DIMEG, I-67040 Laquila, Italy
[6] Chalmers Univ Technol, MINA, Dept Microelect & Nanosci, S-41296 Gothenburg, Sweden
[7] Univ Gothenburg, S-41296 Gothenburg, Sweden
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2007年 / 17卷 / 02期
关键词：
high temperature superconductivity; Josephson effect; Josephson junctions;
D O I：
10.1109/TASC.2007.898708
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We report on the latest developments in the study of transport properties of YBa2CU3O7-delta (YBCO)-based grain boundary (GB) biepitaxial Josephson junctions. We have successfully extended the fabrication process s,. originally developed for (110) oriented SrTiO3 substrates, to (110) oriented LaAlO3 substrates in view of microwave applications. We will report, also, on the observation of conductance fluctuations, we believe related to the coherent diffusion of quasi-particles across the GB. These results, together with the recent observation of macroscopic quantum tunneling and energy level quantization in these Junctions, could help cast some light on the mechanism involved in transport across grain boundaries and in revising the role and the effect of quasi particles in d-wave transport.
引用
收藏
页码：225 / 228
页数：4
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