Interlayer tunneling spectroscopy of mixed-phase BSCCO superconducting whiskers
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, cilt.29, sa.6, 2016 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 29 Sayı: 6
- Basım Tarihi: 2016
- Doi Numarası: 10.1088/0953-2048/29/6/065013
- Dergi Adı: SUPERCONDUCTOR SCIENCE & TECHNOLOGY
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- İnönü Üniversitesi Adresli: Evet
Özet
In this work, we present a study on the interlayer tunneling spectroscopy (ITS) of mixed-phase BiSrCaCuO (BSCCO) superconducting whiskers. The tunneling experiments were carried out on the artificial cross-whisker (twist angle of 90 degrees) junctions. A multiple superconducting energy gap in the cross-whisker junctions was observed, which is attributed to the presence of different doping levels of two Bi2Sr2CaCu2O8+delta phases (Bi-2212), rather than two different phases, in the BSCCO whiskers, namely Bi2Sr2CaCu2O8+delta and Bi2Sr2Ca2Cu3O8+delta (Bi-2212 and Bi-2223). The temperature dependence of the energy gaps was discussed in the framework of the BCS T-dependence. On the other hand, the carrier concentration of the cross-whisker junction was changed by the carrier injection process. The effects of the carrier injection on the critical current, I-c, and the ITS of intrinsic Josephson junctions were investigated in details.