Structural transition in the normal state of the superconductor Mo3Sb7 |
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| Authors: | T Koyama H Yamashita Y Tabata |
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| Affiliation: | a Graduate School of Material Science, University of Hyogo, Kamigori, Ako-gun, Hyogo 678-1297, Japan
b Department of Materials Science and Engineering, Kyoto University, Kyoto 606-8501, Japan |
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| Abstract: | Low-temperature X-ray diffraction measurements on a correlated-electron superconductor Mo3Sb7 revealed that the high-temperature cubic state with the Ir3Ge7 type structure (space group  ) transforms to tetragonal below TS=53 K, at which spin-gap formation was recently suggested. The effect of electron correlations to the structural instability is briefly discussed in connection with the condensation of the high-temperature local moments to the spin-singlet-like state. |
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| Keywords: | A Intermetallic compounds A Superconductors C X-ray diffraction D Phase transitions D Thermal expansion |
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