Tunneling spectroscopy of the underdoped high-T-c superconductors

Article

关键词: HIGH-TEMPERATURE SUPERCONDUCTORS;    PSEUDOGAP;    PHASE;    BI2SR2CACU2O8+DELTA;    FLUCTUATIONS;    LA2-XSRXCUO4;    TRANSITION;    DENSITY;    METALS;    MODEL;   

DOI  :  10.1103/PhysRevB.62.11763

来源: SCIE

【 摘 要 】

We study the tunneling conductance of underdoped cuprate superconductors to investigate how the two energy scales, superconducting acid pseudogaps, manifest: themselves in tunneling below the superconducting transition temperature T-c. 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 Ib) 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 ct al. [Phys. Rev. Lett. 84, 5860 (2000)].

【 授权许可】

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