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Effect of Li doping on structure and superconducting transition temperature of Mg1-xLixB2

Y. G. Zhao·X. P. Zhang·P. T. Qiao·H. T. Zhang·S. L. Jia·B. S. Cao M. H. Zhu·Z. H. Han·X. L. Wang·B. L. Gu
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Abstract

We report the preparation of Mg1-xLixB2 compounds. Nearly single phased samples were obtained for x<0.3. The in-plane lattice parameter a decreases with Li doping, while the lattice parameter c does not show obvious change. The superconducting transition temperature of Mg1-xLixB2 decreases with Li doping and loss of superconductivity occurs for x=0.5 sample. The results of our work are consistent with the prediction of the hole superconductivity mechanism.

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Y. G. Zhao, X. P. Zhang, P. T. Qiao, H. T. Zhang, S. L. Jia, B. S. Cao M. H. Zhu, Z. H. Han, X. L. Wang, B. L. Gu. 2001-03-03. Effect of Li doping on structure and superconducting transition temperature of Mg1-xLixB2. https://arxiv.org/abs/cond-mat/0103077

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