Phys. Rev. B 59, 1491–1496 (1999)Anomalies of Tc, resistivity, and thermoelectric power in the overdoped region of La2-xSrxCu1-yZnyO4Received 11 March 1998; revised 7 August 1998; published in the issue dated 1 January 1999 Transport properties of La2-xSrxCu1-yZnyO4 in the overdoped region have been investigated in detail. In a narrow region around x=0.22 in y=0, we have found anomalously less-metallic behaviors of the electrical resistivity and the thermoelectric power than usual. The value of x around which the anomalies occur decreases through the substitution of Zn; namely, with increasing y. In the anomalously less-metallic samples, superconductivity has been found to be a little suppressed. These anomalies are not connected with the structural phase transition between the tetragonal high-temperature phase (I4/mmm) and the orthorhombic midtemperature one (Bmab). There is a possibility that an ordering of holes and/or spins is formed or fluctuates in the samples exhibiting the anomalous properties in the overdoped region. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.59.1491
DOI:
10.1103/PhysRevB.59.1491
PACS:
74.25.Fy, 74.62.Dh, 74.72.Hs
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