Tunneling spectroscopy of the underdoped high-Tc superconductors
Yunkyu Bang, Han-Yong Choi
DOI 10.1103/PhysRevB.62.11763 · Physical Review B
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Abstract
We study the tunneling conductance of underdoped cuprate superconductors to investigate how the two energy scales, superconducting and pseudogaps, manifest themselves in tunneling below the superconducting transition temperature Tc. We consider two phenomenological models of the pseudogap state: (a) the case where the pseudogap is a simple suppression of the density of states from an unspecified origin and (b) the case where it is due to the short-range antiferromagnetic correlation. Case (b) seems unsatisfactory in comparison with the experimental observations, but (a) gives a good description of the recent c-axis tunneling experiment by Krasnov et al. [Phys. Rev. Lett. 84, 5860 (2000)].
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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