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  In-Cage Interactions in the Clathrate Superconductor Sr8Si46

Hübner, J.-M., Prots, Y., Schnelle, W., Bobnar, M., König, M., Baitinger, M., et al. (2020). In-Cage Interactions in the Clathrate Superconductor Sr8Si46. Chemistry – A European Journal, 26(4), 830-838. doi:10.1002/chem.201904170.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-69D9-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-8EF5-7
Genre: Journal Article

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 Creators:
Hübner, Julia-Maria1, Author              
Prots, Yurii2, Author              
Schnelle, Walter3, Author              
Bobnar, Matej1, Author              
König, Markus4, Author              
Baitinger, Michael5, Author              
Simon, Paul6, Author              
Carrillo-Cabrera, Wilder1, Author              
Ormeci, Alim1, Author              
Svanidze, Eteri1, Author              
Grin, Yuri7, Author              
Schwarz, Ulrich8, Author              
Affiliations:
1Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
2Yuri Prots, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863424              
3Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
4Markus König, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863470              
5Michael Baitinger, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863416              
6Paul Simon, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863418              
7Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              
8Ulrich Schwarz, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863423              

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 Abstract: The clathrate I superconductor Sr8Si46 is obtained under high-pressure high-temperature conditions, at 5 GPa and temperatures in the range of 1273 to 1373 K. At ambient pressure, the compound decomposes upon heating at T= 796(5) K into Si and SrSi2. The crystal structure of the clathrate is isotypic to that of Na8Si46. Chemical bonding analysis reveals conventional covalent bonding within the silicon network as well as additional multi-atomic interactions between Sr and Si within the framework cages. Physical measurements indicate a bulk BCS type II superconducting state below T-c= 3.8(3) K.

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Language(s): eng - English
 Dates: 2020-01-162020-01-16
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000502161700001
DOI: 10.1002/chem.201904170
 Degree: -

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Title: Chemistry – A European Journal
  Other : Chem. – Eur. J.
  Other : Chem. Eur. J.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 26 (4) Sequence Number: - Start / End Page: 830 - 838 Identifier: ISSN: 0947-6539
CoNE: https://pure.mpg.de/cone/journals/resource/954926979058