Description of the superconducting state in the high‐pressure fcc phase of platinum‐hydride

Szczȩśniak, R.; Szczęśniak, D.; Huras, K. M.

doi:10.1002/pssb.201349087

Cited by 14 publications

(15 citation statements)

References 46 publications

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“…Our calculations based on the electron-phonon spectral function α 2 F (ω) obtained in [21], by using the density functional theory within the local-density approximation. The numerical methods adopted in the present work based on the selfconsistent iterative procedure presented in [16], [28], [29].…”

Section: Introductionmentioning

confidence: 99%

Study of the superconducting phase in silicene under biaxial tensile strain

Durajski

Szczęśniak

Szczȩśniak

2014

Solid State Communications

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The electron-doped silicene under the influence of the biaxial tensile strain is predicted to be the phonon-mediated superconductor. By using the Eliashberg formalism, we investigate the thermodynamic properties of the superconducting silicene in the case when the tension is 5% and the electron doping equals 3.5 × 10 14 cm −2 . Under such conditions, silicene monolayer is expected to exhibit the highest superconducting transition temperature (TC ). In particular, based on the electron-phonon spectral function and assuming wide range of the Coulomb pseudopotential values (µ ∈ 0.1, 0.3 ) it is stated that the superconducting transition temperature decreases from 18.7 K to 11.6 K. Similar behavior is observed in the case of the zeroth temperature superconducting energy gap at the Fermi level: 2∆(0) ∈ 6.68, 3.88 meV. Other thermodynamic parameters differ from the predictions of the Bardeen-Cooper-Schrieffer theory. In particular, the ratio of the energy gap to the critical temperature changes in the range from 4.14 to 3.87. The ratio of the specific heat jump to the specific heat in the normal state takes the values from 2.19 to 2.05, and the ratio of the critical temperature and specific heat in the normal state to the thermodynamic critical field increases from 0.143 to 0.155. It is also determined that the maximum value of the electron effective mass equals 2.11 of the electron band mass.

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Section: Introductionmentioning

confidence: 99%

Study of the superconducting phase in silicene under biaxial tensile strain

Durajski

Szczęśniak

Szczȩśniak

2014

Solid State Communications

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“…for Si2H6 (p = 275 GPa) from the paper [55], for B2H6 (p = 360 GPa) from [56], for SiH4 (H2) 2 (p = 250 GPa) from [53], [54], for GeH4 (p = 20 GPa) from [57], for SiH4 (p = 250 GPa) from [58], and for PtH (p = 76 GPa) from [59]. The lines have been obtained using the formula (5).…”

Section: The Range Of the Critical Temperature In The Hydrogen-rimentioning

confidence: 99%

“…It has been found that the maximum value of the pa- [53], [54], for Si2H6 (p = 275 GPa) from [55], for B2H6 (p = 360 GPa) from [56], for PtH (p = 76 GPa) from [59], for SiH4 (p = 250 GPa) from [58], and for GeH4 (p = 20 GPa) from [57]. The lines have been obtained using the formula (9).…”

Section: The Range Of the Parameter R∆ In The Hydrogen-rich Compomentioning

confidence: 99%

The thermodynamic properties of the high-pressure superconducting state in the hydrogen-rich compounds

Szczȩśniak

Durajski

2013

Solid State Sciences

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“…In particular, both selenium [10,11] and sulfur [12,13] are predicted to be superconducting as a standalone chemical elements. Furthermore, selenium is a similar and isoelectronic to sulfur; both are chalcogenides in the same group of periodic [2,14], and PtH [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Study of the High-Pressure Superconducting State in H₃Se at 300 GPa

Drzazga

2019

Acta Phys. Pol. A

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In the present paper, the selected thermodynamic properties of the superconducting state in H3Se compound are theoretically characterized. In the considered system, the superconducting state is induced under the pressure of 300 GPa. The numerical calculations are conducted in the framework of the Eliashberg formalism, due to the relatively high value of the electron-phonon coupling constant, λ = 1.05. In a result, the numerical values of the superconducting order parameter and the wave function renormalization factor, as a function of temperature, are obtained. It is found that the critical temperature value is ∼ 120 K; for the Coulomb pseudopotential equal to 0.1. Moreover, the difference between free energy for the normal and superconducting state, the critical magnetic field, as well as the specific heat for the superconducting and normal state on the temperature are determined. In a conclusion, it is suggested that the strong-coupling and retardation effects play pivotal role in the analyzed superconducting phase, similarly to what can be found in the breakthrough hydrogen sulfide material.

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Description of the superconducting state in the high‐pressure fcc phase of platinum‐hydride

Cited by 14 publications

References 46 publications

Study of the superconducting phase in silicene under biaxial tensile strain

Study of the superconducting phase in silicene under biaxial tensile strain

The thermodynamic properties of the high-pressure superconducting state in the hydrogen-rich compounds

Study of the High-Pressure Superconducting State in H₃Se at 300 GPa

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Description of the superconducting state in the high‐pressure fcc phase of platinum‐hydride

Cited by 14 publications

References 46 publications

Study of the superconducting phase in silicene under biaxial tensile strain

Study of the superconducting phase in silicene under biaxial tensile strain

The thermodynamic properties of the high-pressure superconducting state in the hydrogen-rich compounds

Study of the High-Pressure Superconducting State in H3Se at 300 GPa

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Study of the High-Pressure Superconducting State in H₃Se at 300 GPa