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  Pressure Tuning of Superconductivity of LaPt4Ge12 and PrPt4Ge12 Single Crystals

Lombardi, G. A., Mydeen, K., Gumeniuk, R., Leithe-Jasper, A., Schnelle, W., dos Reis, R. D., et al. (2022). Pressure Tuning of Superconductivity of LaPt4Ge12 and PrPt4Ge12 Single Crystals. Materials, 15(8): 2743, pp. 1-10. doi:10.3390/ma15082743.

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 Creators:
Lombardi, Gustavo A.1, Author
Mydeen, Kamal2, Author              
Gumeniuk, Roman1, Author
Leithe-Jasper, Andreas3, Author              
Schnelle, Walter4, Author              
dos Reis, Ricardo D.1, Author
Nicklas, Michael1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Andreas Leithe-Jasper, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863406              
4Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              

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 Abstract: We carried out electrical resistivity and X-ray diffraction (XRD) studies on the filled skutterudite superconductors LaPt4Ge12 and PrPt(4)Ge(12 )under hydrostatic pressure. The superconducting transition temperature T-c is linearly suppressed upon increasing pressure, though the effect of pressure on T-c is rather weak. From the analysis of the XRD data, we obtain bulk moduli of B = 106 GPa and B = 83 GPa for LaPt4Ge12 and PrPt4Ge12, respectively. The knowledge of the bulk modulus allows us to compare the dependence of T-c on the unit-cell volume from our pressure study directly with that found in the substitution series La1-xPrxPt4Ge12. We find that application of hydrostatic pressure can be characterized mainly as a volume effect in LaPt4Ge12 and PrPt4Ge12, while substitution of Pr for La1-xPrxPt4Ge12 yields features going beyond a simple picture.

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Language(s): eng - English
 Dates: 2022-04-082022-04-08
 Publication Status: Published in print
 Pages: -
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 Rev. Type: -
 Identifiers: ISI: 000786357900001
DOI: 10.3390/ma15082743
 Degree: -

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Title: Materials
  Abbreviation : Materials
Source Genre: Journal
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Publ. Info: Basel : MDPI
Pages: - Volume / Issue: 15 (8) Sequence Number: 2743 Start / End Page: 1 - 10 Identifier: ISSN: 1996-1944
CoNE: https://pure.mpg.de/cone/journals/resource/1996-1944