63 citations · 657 across the 45 of their papers we have counts for
45 papers
Theoretical prediction of strong-coupling superconductivity in a hypothetical NaAlH3 phase at ambient pressure
Izabela A. Wrona, Yinwei Li, Radoslaw Szczesniak +1
We present a comprehensive first-principles investigation of a hypothetical cubic Pm-3m phase of the ternary hydride NaAlH3, focusing on its lattice dynamics, electronic structure,…
(La,Th)H: the potential high- superconductors stabilized thermodynamically below 200 GPa
Peng Song, Zhufeng Hou, Kenta Hongo +1
The recent high-pressure experimental discovery of superconductivity in (La,Y)H, (La,Ce)H, (La,Ce)H, (Y,Ce)H, and (La,Nd)H shows that the ternary r…
Carbonaceous sulfur hydride system: the strong-coupled room-temperature superconductor with a low value of Ginzburg-Landau parameter
I. A. Wrona, M. Kostrzewa, K. A. Krok +2
The superconducting state in Carbonaceous Sulfur Hydride (C-S-H) system is characterized by the record-high critical temperature of ~K experimentally observed at 267 GPa…
Nonadiabatic superconductivity in Li-intercalated hexagonal boron nitride bilayer
K. A. Szewczyk, I. A. Domagalska, A. P. Durajski +1
In the case of Li-intercalated hexagonal boron nitride bilayer (Li-hBN), the vertex corrections of electron-phonon interaction cannot be omitted. This is evidenced by the very high…
Isotope effect in superconducting lanthanum hydride under high compression
Artur P. Durajski, Radoslaw Szczesniak, Yinwei Li +2
Recently, the discovery of room-temperature superconductivity (SC) was experimentally realized in the fcc phase of LaH under megabar pressure. Specifically, the isotope effe…
From LaH10 to room-temperature superconductors
M. Kostrzewa, K. M. Szczesniak, A. P. Durajski +1
Thermodynamic parameters of the superconductor were an object of our interest. is characterised by the highest experimentally observed value of the cr…
The unbalanced phonon-induced superconducting state on a square lattice beyond the static boundary
K. A. Szewczyk, M. W. Jarosik, A. P. Durajski +1
The paper presents our verification of induction of the superconducting state on a square lattice by the linear electron-phonon interaction for values of the unbalance parameter ($…
The phonon-mediated superconductivity in bismuthates by non-adiabatic pairing
Dominik Szczȩśniak, Adam Z. Kaczmarek, Ewa A. Drzazga-Szczȩśniak +1
In the present paper, the impact of small Fermi energy on the selected parameters of the superconducting state in BaKBiO (BKBO) is studied at $x \in (0.3, 0.4,…
Anisotropy effects on the critical magnetic field in CaC superconductor
Ewa A. Drzazga, Iza A. Wrona, Radosław Szczęśniak
The calcium intercalated graphite (CaC) is considered to be a representative material of the graphite intercalated superconductors, which exhibits sizable anisotropy of the F…
Anomalously high value of Coulomb pseudopotential for the superconductor
Małgorzata Kostrzewa, Radosław Szczęśniak, Joanna K. Kalaga +1
The and compounds are the two candidates for the low-temperature phase of compressed sulfur-hydrogen system. We have shown that the value of Coulo…
Unbalanced superconductivity induced by the constant electron-phonon coupling on a square lattice
Kamila A. Szewczyk, Radosław Szczȩśniak, Dominik Szczȩśniak
In the present paper, we analyze the properties of the unbalanced superconducting state on a square lattice with the constant value of the electron-phonon coupling function. We con…
Superconducting properties of under- and over-doped BaKBiO perovskite oxide
D. Szczȩśniak, A. Z. Kaczmarek, R. Szczȩśniak +3
In the present study, we investigate the thermodynamic properties of the BaKBiO (BKBO) superconductor in the under- () and over-doped () regime, w…
Non-parametric application of Tsallis statistics to systems consisting of M hydrogen molecules
R. Szczęśniak, E. A. Drzazga, I. A. Domagalska +2
We have determined the entropy, the total energy, and the specific heat of the systems consisting of hydrogen molecules. The calculations were conducted in the framework…
Strong-coupling superconductivity induced by calcium intercalation in bilayer transition-metal dichalcogenides
R. Szczesniak, A. P. Durajski, M. W. Jarosik
We theoretically investigate the possibility of achieving a superconducting state in transition-metal dichalcogenide bilayers through intercalation, a process previously and widely…
Characteristics of superconducting state in vanadium: the Eliashberg equations and semi-analytical formulas
E. A. Drzazga, I. A. Domagalska, M. W. Jarosik +2
The superconducting state in vanadium characterizes with the critical temperature () equal to ~K. The Coulomb pseudopotential, calculated with the help of the Eliashber…
Pressure effects on the unconventional superconductivity of the noncentrosymmetric LaNiC2
B. Wiendlocha, R. Szczęśniak, A. P. Durajski +1
The unconventional superconductivity in the noncentrosymmetric LaNiC, and its evolution with pressure, is analyzed basing on the {\it ab initio} computations and the full Elias…
Migdal-Eliashberg equations - the effective model for superconducting state in H3S
A. P. Durajski, R. Szczesniak
The high-temperature superconducting state in sulfur trihydride (~K) has been investigated in the context of the non-adiabatic and anharmonic effects. The Migdal-Eliashb…
High-pressure superconducting state in hydrogen
A. M. Duda, R. Szczęśniak, M. A. Sowińska +1
The paper determines the thermodynamic parameters of the superconducting state in the metallic atomic hydrogen under the pressure at TPa, TPa, and TPa. The calculat…
Characteristics of the Eliashberg formalism on the example of high-pressure superconducting state in phosphor
A. M. Duda, R. Szczęśniak, M. Sowińska +1
The work describes the properties of the high-pressure superconducting state in phosphor: GPa. The calculations were performed in the framework of the Elia…
Non-BCS temperature dependence of energy gap in thin film electron-doped cuprates
R. Szczesniak, A. P. Durajski
We investigate the dependence of the energy gap () on the temperature () for the electron-doped high-temperature superconductors. The following compounds, in the form of the…
The isotope effect in HS superconductor
R. Szczesniak, A. P. Durajski
The experimental value of isotope coefficient decreases from to in the pressure range from GPa to GPa. We have shown that the value of $0.3…
High-temperature study of superconducting hydrogen and deuterium sulfide
A. P. Durajski, R. Szczesniak, L. Pietronero
Hydrogen-rich compounds are extensively explored as candidates for a high-temperature superconductors. Currently, the measured critical temperature of K in hydrogen sulfide (…
Pseudogap in Eliashberg approach based on electron-phonon and electron-electron-phonon interaction
R. Szczesniak, A. P. Durajski, A. M. Duda
The properties of the superconducting and the anomalous normal state have been described by using the Eliashberg method. The pairing mechanism has been reproduced with help of the…
Study of the superconducting phase in silicene under biaxial tensile strain
A. P. Durajski, D. Szczȩśniak, R. Szczȩśniak
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 investiga…