Enhancing superconductivity of 
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 by atomic disorder

Ślebarski, A.; Fijałkowski, Marcin; Maśka, Maciej M.; Deniszczyk, J.; Zajdel, P.; Trump, Benjamin A.; Yakovenko, Andrey A.

doi:10.1103/physrevb.103.155133

Cited by 11 publications

(1 citation statement)

References 68 publications

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“…However, there is a negative pressure resistivity effect in this type of spinfluctuation system which is due to the hybridization with conduction electron states produces enhanced delocalization of f or d states [33]. On the other hand, chemical pressure is found to enhance the superconductivity in isostructural compounds Y 5 Rh 6 Sn 18 [34] and Lu 5 Rh 6 Sn 18 [35] . Similar La 3 Co 4 Sn 13 skutterudite showed a positive pressure coefficient of T c with the rate of ∼0.03 K GPa −1 .…”

Section: Resultsmentioning

confidence: 98%

Pressure-enhanced superconductivity in cage-type quasiskutterudite Sc₅Rh₆Sn₁₈ single crystal

Lingannan¹,

Joseph²,

Sundaramoorthy³

et al. 2022

J. Phys.: Condens. Matter

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Sc5Rh6Sn18 with a cage-type quasiskutterudite crystal lattice and type II superconductivity, with superconducting transition temperature Tc = 4.99 K, was investigated under hydrostatic high-pressure (HP) using electrical transport, synchrotron X-ray diffraction (XRD) and Raman spectroscopy. Our data show that HP enhance the metallic nature and Tc of the system. Tc is found to show a continuous increase reaching to 5.24 K at 2.5 GPa. Athough the system is metallic in nature, Raman spectroscopy investigations at ambient pressure revealed the presence of three weak modes at 165.97, 219.86 and 230.35 cm-1, mostly related to the rattling atom Sc. The HP-XRD data revealed that the cage structure was stable without any structural phase transition up to ~7 GPa. The lattice parameters and volume exhibited a smooth decrease without any anomalies as a function of pressure in this pressure range. In particular, a second order Birch-Murnaghan equation of state can describe the pressure dependence of the unit cell volume well, yielding a bulk modulus of ~ 97 GPa. HP Raman investigations revealed a linear shift of all the three Raman modes to higher wavenumbers with increasing pressure up to ~8 GPa. As the pressure enhances the bond overlap, thus inducing more electronic charges into the system, HP-XRD and Raman results may indciate the possibility of obtaining higher Tc with increasing pressures in this pressure range.

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Section: Resultsmentioning

confidence: 98%

Pressure-enhanced superconductivity in cage-type quasiskutterudite Sc₅Rh₆Sn₁₈ single crystal

Lingannan¹,

Joseph²,

Sundaramoorthy³

et al. 2022

J. Phys.: Condens. Matter

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Structural and vibrational properties of cage-type Sc5Ru6Sn18 superconductor under pressure using synchrotron X-ray diffraction and Raman spectroscopy

Sundaramoorthy,

Joseph,

Lingannan

et al. 2024

Journal of Alloys and Compounds

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Electronic structure studies of Kondo lattice compounds CeRhSn3 and CeRuSn3: Comparative study

Ślebarski

Deniszczyk

2022

Journal of Magnetism and Magnetic Materials

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Enhancing superconductivity of Lu5Rh6Sn18 by atomic disorder

Cited by 11 publications

References 68 publications

Pressure-enhanced superconductivity in cage-type quasiskutterudite Sc₅Rh₆Sn₁₈ single crystal

Pressure-enhanced superconductivity in cage-type quasiskutterudite Sc₅Rh₆Sn₁₈ single crystal

Structural and vibrational properties of cage-type Sc5Ru6Sn18 superconductor under pressure using synchrotron X-ray diffraction and Raman spectroscopy

Electronic structure studies of Kondo lattice compounds CeRhSn3 and CeRuSn3: Comparative study

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Enhancing superconductivity of Lu5Rh6Sn18 by atomic disorder

Cited by 11 publications

References 68 publications

Pressure-enhanced superconductivity in cage-type quasiskutterudite Sc5Rh6Sn18 single crystal

Pressure-enhanced superconductivity in cage-type quasiskutterudite Sc5Rh6Sn18 single crystal

Structural and vibrational properties of cage-type Sc5Ru6Sn18 superconductor under pressure using synchrotron X-ray diffraction and Raman spectroscopy

Electronic structure studies of Kondo lattice compounds CeRhSn3 and CeRuSn3: Comparative study

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Pressure-enhanced superconductivity in cage-type quasiskutterudite Sc₅Rh₆Sn₁₈ single crystal

Pressure-enhanced superconductivity in cage-type quasiskutterudite Sc₅Rh₆Sn₁₈ single crystal