Schlenga, K. and Kleiner, R. and Hechtfischer, G. and Mössle, M. and Schmitt, S. and Müller, Paul and Helm, Ch. and Preis, Ch. and Forsthofer, F. and Keller, Joachim and Johnson, H. L. and Veith, M. and Steinbeiss, E. (1998) Tunneling spectroscopy with intrinsic Josephson junctions in Bi2Sr2CaCu2O8+delta and Tl2Ba2Ca2Cu3O10+delta. PHYSICAL REVIEW B, 57 (22). pp. 14518-14536. ISSN 2469-9950, 2469-9969
Full text not available from this repository.Abstract
The paper presents a detailed discussion of the current-voltage characteristic of intrinsic Josephson junctions in Bi2Sr2CaCu2O8+delta and Tl2Ba2Ca2Cu3O10+delta. In these materials Josephson tunnel junctions are formed naturally between adjacent superconducting CuO2 bilayers or trilayers. A typical sample consists of a stack of Josephson junctions. We explicitly show that all junctions inside a given sample have identical tunneling characteristics. We discuss the shape (general curvature) of the current-voltage characteristic in terms of a superconducting order parameter that has a predominant d(x2-y2) symmetry. The IcRn product of the intrinsic Josephson junctions turns out to be 2-3 mV, about 10% of the maximum energy gap Delta(0)/e. The current-voltage characteristic of every individual junction exhibits pronounced structures in the subgap regime. They are best explained by a recently proposed resonant coupling mechanism between infrared active optical c-axis phonons and oscillating Josephson currents.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | T-C SUPERCONDUCTORS; ELECTRONIC RAMAN-SCATTERING; I-V CHARACTERISTICS; SINGLE-CRYSTALS; SUBGAP STRUCTURES; PAIRING STATE; HIGH-T(C) SUPERCONDUCTORS; ENERGY-GAP; TEMPERATURE; SYMMETRY |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Alumni or Retired Professors > Group Joachim Keller |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Feb 2023 07:28 |
| Last Modified: | 24 Feb 2023 07:28 |
| URI: | https://pred.uni-regensburg.de/id/eprint/49792 |
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