| La1.85-xSr0.15+xCu1-xMxO4(M = Cr, Mn, Fe, Co, Ga, Al)体系的输运性质研究 |
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| 引用本文： | 许高杰,毛志强,金灏,闫宏杰,张建武,张昌锦,张裕恒.La1.85-xSr0.15+xCu1-xMxO4(M = Cr, Mn, Fe, Co, Ga, Al)体系的输运性质研究[J].低温物理学报,2000,15(1):61-65. |
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| 作者姓名： | 许高杰 毛志强 金灏 闫宏杰 张建武 张昌锦 张裕恒 |
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| 作者单位： | 1. 中国科技大学结构中心,合肥,230026;中国科技大学天文与应用物理系,合肥,230026
2. 中国科技大学结构中心,合肥,230026 |
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| 基金项目： | 中国科学院资助项目，the National Center for Research and Development on Superconductivity，中国博士后科学基金，59625205，，，，， |
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| 摘 要： | 利用Ｘ－光衍射，电阻率和电势等实验手段，系统地研究了Ｌａ１．８５－ｘＳｒ０．１５＋ｘＣｕ１－ｘＭｘＯ４（Ｍ＝Ｃｒ，Ｍｎ，Ｆｅ，Ｃｏ，Ｇａ ａｎｄ Ａｌ）体系的结构和输运性质。结果表明；所有的三阶离子掺杂都能在较低的掺杂浓度下抑制超导电性，并且引起金属到绝缘体的转变。磁性离子和非磁性离子掺杂引起显著不同的热电势变化，并用ｄ－ｐ杂化态的变化和局域自旋散射来进行分析讨论。
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| 关 键 词： | 超导体 超导电性 输运性质 |
TRANSPORT PROPERTIES OF La1.85-xSr0.15+xCu1-xMxO4 (M=Cr, Mn, Fe, Co, Ga and Al) |
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| Xu Gao-jie,Mao Zhi-qiang,Jin Hao,Yan Hong-jie,Zhang Jian-wu,Zhang Chang-jin,Zhang Yu-heng.TRANSPORT PROPERTIES OF La1.85-xSr0.15+xCu1-xMxO4 (M=Cr, Mn, Fe, Co, Ga and Al)[J].Chinese Journal of Low Temperature Physics,2000,15(1):61-65. |
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| Authors: | Xu Gao-jie Mao Zhi-qiang Jin Hao Yan Hong-jie Zhang Jian-wu Zhang Chang-jin Zhang Yu-heng |
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| Abstract: | The structure and transport properties of samples La1.85-xSr0.15+xCu1-xMxO4 (M=Cr, Mn, Fe, Co, Ga and Al) were investigated by means of XRD, resistivity and thermoelectric power. The experimental results indicate that all the trivalent elements doping can suppress superconductivity and cause metal-insulator transition at lower doping level. A different change of TEP was observed between magnetic ions doping and nonmagnetic ions doping, which was analyzed in terms of d-p hybridization state and spin scattering. |
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