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.
C1 [Kizilaslan, O.] Inonu Univ, Fac Engn, Dept Biomed Engn, TR-44280 Malatya, Turkey.
[Truccato, M.] Univ Turin, CNISM, Via P Giuria 1, I-10125 Turin, Italy.
[Truccato, M.] Univ Turin, NIS Ctr Excellence, Dept Phys, Via P Giuria 1, I-10125 Turin, Italy.
[Simsek, Y.; Koval, Y.; Mueller, P.] Univ Erlangen Nurnberg, Dept Phys, D-91058 Erlangen, Germany.
[Aksan, M. A.] Inonu Univ, Fac Arts & Sci, Dept Phys, TR-44280 Malatya, Turkey.