Dumbbells of Five-Connected Silicon Atoms and Superconductivity in the Binary 
Silicides MSi3 (M = Ca, Y, Lu)

Schwarz, U.; Wosylus, A.; Rosner, H.; Schnelle, W.; Ormeci, A.; Meier, K.; Baranov, A.; Nicklas, M.; Leipe, S.; Müller, C. J.; Grin, Y.

doi:10.1021/ja3055194

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Dumbbells of Five-Connected Silicon Atoms and Superconductivity in the Binary Silicides MSi₃ (M = Ca, Y, Lu)

MPS-Authors

/persons/resource/persons126841

Schwarz, U.
Ulrich Schwarz, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126912

Wosylus, A.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126819

Rosner, H.
Helge Rosner, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126838

Schnelle, W.
Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126787

Ormeci, A.
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126750

Meier, K.
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126530

Baranov, A.
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126782

Nicklas, M.
Michael Nicklas, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126725

Leipe, S.
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126768

Müller, C. J.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126626

Grin, Y.
Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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引用

Schwarz, U., Wosylus, A., Rosner, H., Schnelle, W., Ormeci, A., Meier, K., Baranov, A., Nicklas, M., Leipe, S., Müller, C. J., & Grin, Y. (2012). Dumbbells of Five-Connected Silicon Atoms and Superconductivity in the Binary Silicides MSi₃ (M = Ca, Y, Lu). Journal of the American Chemical Society, 134(33), 13558-13561. doi:10.1021/ja3055194.

引用: https://hdl.handle.net/11858/00-001M-0000-0015-2067-9

要旨

The new metastable binary silicides MSi3 (M = Ca, Y, Lu) have been synthesized by high-pressure, high-temperature reactions at pressures between 12(2) and 15(2) GPa and temperatures from 900(100) to 1400(150) K. The atomic patterns comprise intricate silicon layers of condensed molecule-like Si2 dimers. The alkaline-earth element adopts the oxidation state +2, while the rare-earth and transition metals realize +3. All of the compounds exhibit BCS-type superconductivity with weak electron?phonon coupling below critical temperatures of up to 7 K.