Distinct superconducting gap and the pseudogap in the interlayer tunneling spectroscopy for Bi2Sr2CaCu2O8+δ
| Autor: | Minoru Suzuki, Mohamed Lmouchter, Takao Watanabe, Kenkichi Anagawa |
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| Rok vydání: | 2001 |
| Předmět: |
Physics
Superconductivity Josephson effect Condensed matter physics Band gap Energy Engineering and Power Technology Conductance Condensed Matter Physics Electronic Optical and Magnetic Materials Tunnel effect Condensed Matter::Superconductivity Condensed Matter::Strongly Correlated Electrons Electrical and Electronic Engineering Spectroscopy Pseudogap Quantum tunnelling |
| Zdroj: | Physica C: Superconductivity. 362:164-168 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/s0921-4534(01)00664-5 |
| Popis: | Tunneling spectroscopy by use of intrinsic Josephson junctions in the Bi 2 Sr 2 CaCu 2 O 8+ δ has provided evidence that the superconducting gap and the pseudogap are definitely different. In underdoped specimens, the tunneling spectrum exhibits two conductance peaks, indicating that the superconducting gap is distinct from the pseudogap. This result is in conflict with some superconductivity models in which the superconducting gap remains finite at T c and connects smoothly with the pseudogap above T c . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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