| B-site Fe doping effect on the structure and electronic transport properties of quasi-one-dimensional spin ladder compound Sr-14(Cu1-yFey)(24)O-41 |
| N. Hu; H. Xie; L. L. Wang; Y. Lin; R. Xiong; Z. X. Yu; W. F. Tang; J. Shi
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| 2006
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| 发表期刊 | Acta Physica Sinica
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| ISSN | 1000-3290
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| 卷号 | 55期号:7页码:3480-3487 |
| 摘要 | Two groups of Sr-14 (Cu1-y Fe-y)(24)O-41 compounds with Fe3+ doping and 2/3Fe(3+) + 1/3Fe(2+) admixture doping respectively were prepared by conventional solid-state reaction. X-ray diffraction analysis shows that the samples have single phase with y <= 0.03 of Fe3+ doping and y <= 0.02 of 2/3Fe(3+) + 1/3Fe(2+) admixture doping. The lattice parameters a and b decrease gradually when the doping content increases for each group. The measurements of electronic transport properties show that the electrical resistivity decreases monotonically with the increase in y of Fe3+ doping, which indicates that free hole carriers in the ladder increase. A crossover temperature T-rho was observed in the Arrhenius plot of the resistivity versus temperature. The decrease of resistivity of the Fe3+ doped samples is interpreted in term of the dissociation of spin dimers and hole pairs located in the ladder induced by the substitution of Fe3+ for Cu2+. Two kinds of possible conduction mechanisms above and below T-rho are presented respectively. The fitting of experimental data proves that the conduction mechanism above T-rho is due to thermal activated single-holes' contribution, while below T-rho one-dimensional hopping conduction is dominant. |
| 部门归属 | wuhan univ, dept phys, key lab acoust & photon mat & device, minist educ, wuhan 430072, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;hu, n (reprint author), wuhan univ, dept phys, key lab acoust & photon mat & device, minist educ, wuhan 430072, peoples r china;huni1110@126.com jshi@whu.edu.cn
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| 关键词 | Strongly Correlated Electronic Systems
Spin Ladder Compound
Crystal
Structure
Electronic Transport Properties
Metal-insulator-transition
System
Sr14-xcaxcu24o41
Sr14cu24o41
Gap
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| URL | 查看原文
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| WOS记录号 | WOS:000239068500047
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/34247
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
N. Hu,H. Xie,L. L. Wang,et al. B-site Fe doping effect on the structure and electronic transport properties of quasi-one-dimensional spin ladder compound Sr-14(Cu1-yFey)(24)O-41[J]. Acta Physica Sinica,2006,55(7):3480-3487.
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| APA |
N. Hu.,H. Xie.,L. L. Wang.,Y. Lin.,R. Xiong.,...&J. Shi.(2006).B-site Fe doping effect on the structure and electronic transport properties of quasi-one-dimensional spin ladder compound Sr-14(Cu1-yFey)(24)O-41.Acta Physica Sinica,55(7),3480-3487.
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| MLA |
N. Hu,et al."B-site Fe doping effect on the structure and electronic transport properties of quasi-one-dimensional spin ladder compound Sr-14(Cu1-yFey)(24)O-41".Acta Physica Sinica 55.7(2006):3480-3487.
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