Transport Anomalies and the Role of Pseudogap in the "60-K Phase" of YBa_{2}Cu_{3}O_{7-δ}

Abstract

We report the result of our accurate measurements of the a- and b-axis resistivity, Hall coefficient, and the a-axis thermopower in untwinned YBa_{2}Cu_{3}O_{y} single crystals in a wide range of doping. It is found that both the a-axis resistivity and the Hall conductivity show anomalous dependences on the oxygen content y in the "60-K phase" below the pseudogap temperature T^*. The complete data set enables us to narrow down the possible pictures of the 60-K phase, with which we discuss a peculiar role of the pseudogap in the charge transport.

arXiv comment4 pages, 4 figures, accepted for publication in PRL

References in corpus (4)

• The pseudogap in high-temperature superconductors: an experimental survey
• A Theory of the Longitudinal and Hall Conductivities of the Cuprate Superconductors
• Phenomenological Transport Equation for the Cuprate Metals
• Charge Localization from Local Destruction of Antiferromagnetic Correlation in Zn-doped YBa2Cu3O7-d

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