TY - JOUR
T1 - Impurity effects on spin correlations in electron-doped Pr 1-xLaCexCu1-yZnyO4 by a μsR study
AU - Hino, A.
AU - Fujita, M.
AU - Watanabe, I.
AU - Yamada, K.
N1 - Funding Information:
We thank Ishiguro and Takada for their technical assistance of ICP measurement, and Nojima and Nakamura for magnetization measurement with a SQUID magnetometer in the Institute for Materials Research, Tohoku University. The present work was supported in part by the Japanese Ministry of Education, Culture, Sports, Science and Technology, Grant-in-Aid for Scientific Research on Priority Areas (Novel Quantum Phenomena in Transition Metal Oxides), 12046239, 2000, for Scientific Research (A).
PY - 2005/10/1
Y1 - 2005/10/1
N2 - We performed zero-field muon spin relaxation/rotation measurements on the electron-doped system Pr1-xLaCexCu1-yZn yO4 to study the impurity effect on spin correlations in both magnetic and superconducting phases. In the antiferromagnetic phase with x = 0.08, the Néel temperature TN decreases monotonically upon Zn substitution, while with approaching the superconducting boundary (x = 0.10), the effect of Zn substitution on the suppression of TN becomes weak (x = 0.08). In the superconducting phase, in contrast to the hole-underdoped system, suppression of superconductivity by Zn substitution neither enhance well-defined AF correlations nor induce it at least down to T = 6 K. The impurity effect is discussed from a viewpoint of dilution effect of the Zn on the Cu spin lattice.
AB - We performed zero-field muon spin relaxation/rotation measurements on the electron-doped system Pr1-xLaCexCu1-yZn yO4 to study the impurity effect on spin correlations in both magnetic and superconducting phases. In the antiferromagnetic phase with x = 0.08, the Néel temperature TN decreases monotonically upon Zn substitution, while with approaching the superconducting boundary (x = 0.10), the effect of Zn substitution on the suppression of TN becomes weak (x = 0.08). In the superconducting phase, in contrast to the hole-underdoped system, suppression of superconductivity by Zn substitution neither enhance well-defined AF correlations nor induce it at least down to T = 6 K. The impurity effect is discussed from a viewpoint of dilution effect of the Zn on the Cu spin lattice.
KW - Electron-doped superconductivity
KW - PrLaCeCu ZnO
KW - ZF-μSR
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U2 - 10.1016/j.physc.2005.01.027
DO - 10.1016/j.physc.2005.01.027
M3 - Conference article
AN - SCOPUS:25444433325
VL - 426-431
SP - 309
EP - 314
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - I
T2 - Proceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity
Y2 - 23 November 2004 through 25 November 2004
ER -