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

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B. L. Gu

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classification ❄️ cond-mat.supr-con

keywords dopingmg1-xlixb2decreaseslatticeparametersuperconductingsuperconductivitytemperature

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

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