SUPERCONDUCTING PROPERTY IN Mn DOPED La1.85Sr0.15CuO4 SYSTEM
SUPERCONDUCTING PROPERTY IN Mn DOPED La1.85Sr0.15CuO4 SYSTEM
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Mn掺杂La1.85Sr0.15CuO4体系的超导性能
DOI：
10.1142/s0217979205028451
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发表时间：
2005
影响因子：
1.7
通讯作者：
Y. W. Park
中科院分区：
文献类型：
--
作者：
Changjin Zhang;J. Kim;Bo Hyun Kim;Y. W. Park
本文讨论了La_（1.85）Sr_（0.15）Cu_（1-x）Mn_xO_4和La_（1.85 - 2）Sr_（0.15 + 2）Cu_（1-x）Mn_xO_4的超导性质。所有超导样品的超导转变温度均稳定在37 K。在这些系统中超导性的抑制不符合Arbrikosov和Gork'ov理论，该理论预测在晶格中存在磁性杂质时Tc应该降低。磁对断裂效应不是Mn掺杂体系超导电性被抑制的原因。由Mn掺杂引起的载流子在CuO 2平面中的局域化应该是对超导电性的抑制负责。
In this paper the superconducting properties in La1.85SSr0.15Cu1-xMnxO4 and La1.85-2xSr0.15+2xCu1-xMnxO4 samples are discussed. The superconducting transition temperature keeps constantly at 37 K for all superconducting samples. The suppression of superconductivity in these systems does not fit the Arbrikosov and Gork'ov theory which predicts that Tc should decrease in the presence of magnetic impurities in the lattice. The magnetic pair-breaking effect is not the reason for the suppression of superconductivity in Mn doping systems. The localization of carriers in the CuO2 plane induced by Mn doping should be responsible for the suppression of superconductivity.