title: Transport anomalies and the role of pseudogap in the 60-K phase of YBa(2)Cu(3)O(7-delta).
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.
authors.affiliation: Central Research Institute of Electric Power Industry, Komae, Tokyo 201-8511, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Segawa
authors.forename: Y
authors.initials: Y
authors.lastname: Ando