TY - JOUR
T1 - Transport properties and low temperature structural phase transition around x=0.125 in La2-x-yREySrxCuO4 (RENd, Sm, Gd, Tb)
AU - Suzuki, T.
AU - Sera, M.
AU - Fukase, T.
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1994/12
Y1 - 1994/12
N2 - In La1.9-itxGd0.1SrxCuO4, a prominent change of the thermoelectric power S below ∼80K is observed in a narrow region of x around 0.12 although the structural phase transition to the tetragonal low-temperature (TLT) phase is observed at ∼ 115K in a wide region of x. These results suggest that the anomalous behaviors of the transport properties below ∼80K are responsible for the change of the electronic state itself. In La1.875-yGdySr0.125CuO4, Tuittdβ, which is the structural phase transition temperature to the TLT pahse, increases with increasing y. The temperature where S begins to decrease rapidly is close to Tudβ in y≤0.04. In y≥0.05, a prominent change of S is observed below a lower temperature than Tudβ and an obvious sign reversal of S appears appears at ∼40K. These results indicate that the change of the electronic state is enhanced in the TLT phase.
AB - In La1.9-itxGd0.1SrxCuO4, a prominent change of the thermoelectric power S below ∼80K is observed in a narrow region of x around 0.12 although the structural phase transition to the tetragonal low-temperature (TLT) phase is observed at ∼ 115K in a wide region of x. These results suggest that the anomalous behaviors of the transport properties below ∼80K are responsible for the change of the electronic state itself. In La1.875-yGdySr0.125CuO4, Tuittdβ, which is the structural phase transition temperature to the TLT pahse, increases with increasing y. The temperature where S begins to decrease rapidly is close to Tudβ in y≤0.04. In y≥0.05, a prominent change of S is observed below a lower temperature than Tudβ and an obvious sign reversal of S appears appears at ∼40K. These results indicate that the change of the electronic state is enhanced in the TLT phase.
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U2 - 10.1016/0921-4534(94)91882-1
DO - 10.1016/0921-4534(94)91882-1
M3 - Article
AN - SCOPUS:4243304265
VL - 235-240
SP - 1315
EP - 1316
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - PART 2
ER -