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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Petrovic, Cedomir
Vinča Institute of Nuclear Sciences
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2024Robust superconductivity and the suppression of charge-density wave in the quasi-skutterudites $text{Ca}_{3}(text{Ir}_{1-x}text{Rh}_{x})_{4}text{Sn}_{13}$ single crystals at ambient pressurecitations
- 2023Magnetic properties of intercalated quasi-2D Fe3-xGeTe2 van der Waals magnetcitations
- 2023Enhancement of superconductivity at a quantum critical point in (Ca1-xSrx)3Rh4Sn13citations
- 2022Fluctuating Ru trimer precursor to a two-stage electronic transition in RuPcitations
- 2020Valence band electronic structure of the van der Waals ferromagnetic insulators: VI3 and CrI3citations
- 2017Superconducting order from disorder in 2H-TaSe2−xSxcitations
- 2015Spin-liquid polymorphism in a correlated electron system on the threshold of superconductivitycitations
- 2015Enhanced thermoelectric power and electronic correlations in RuSe2citations
- 2007Enhanced Curie temperature and spin polarization in Mn4FeGe3citations
- 2001Superconducting MgB2 thin films by pulsed laser depositioncitations
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article
Enhancement of superconductivity at a quantum critical point in (Ca1-xSrx)3Rh4Sn13
Abstract
<jats:title>Abstract</jats:title><jats:p>We report microscopic studies by muon spin spectroscopy of the superconducting properties as a function of chemical and hydrostatic pressure in the cubic ternary intermetallic (Ca<jats:sub><jats:italic>x</jats:italic></jats:sub>Sr<jats:sub>1−<jats:italic>x</jats:italic></jats:sub>)<jats:sub>3</jats:sub>Rh<jats:sub>4</jats:sub>Sn<jats:sub>13</jats:sub> compounds. We find evidence of a quantum critical point at a critical pressure p<jats:sub><jats:italic>c</jats:italic></jats:sub> in the superconducting phase, where the superfluid density increases by a factor of two and the superconducting pairing strength displays a pronounced maximum. The enhancement of superconductivity is related to the structural phase transition at p<jats:sub><jats:italic>c</jats:italic></jats:sub>, which is accompanied by profound changes of the Fermi surface associated to the suppression of a charge density wave (CDW). The quantum critical point separates a superconducting phase coexisting with CDW from a pure superconducting phase, while in both phases superconductivity has a strong-coupling phonon-mediated BCS-like s-wave character. Together with the related isoelectronic compound (Ca<jats:sub><jats:italic>x</jats:italic></jats:sub>Sr<jats:sub>1−<jats:italic>x</jats:italic></jats:sub>)<jats:sub>3</jats:sub>Ir<jats:sub>4</jats:sub>Sn<jats:sub>13</jats:sub>, this system shows that conventional BCS superconductors in the presence of competing orders may display behaviour and characteristics of unconventional superconductors.</jats:p>