Strong-coupling superconductivity of 
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 and 
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: Phonon engineering of metallic Ir and Rh

Gutowska, Sylwia; Górnicka, Karolina; Wójcik, P.; Klimczuk, Tomasz; Wiendlocha, Bartłomiej

doi:10.1103/physrevb.104.054505

Cited by 19 publications

(26 citation statements)

References 42 publications

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“…Because Ir does not exhibit superconductivity above 2 K [32], the observed superconductivity was attributed to BaIr2. The Tc of BaIr2 was approximately half those of CaIr2 and SrIr2, which is not in accordance with the theoretical prediction [15]. Figure 4 shows the T dependence of ρ below 300 K at H = 0 Oe for the sample.…”

Section: Superconducting Propertiesmentioning

confidence: 66%

“…The ΘD of BaIr2 is lower than that of CaIr2 and SrIr2 (160-214 K [15][16][17]), which can be qualitatively explained as the effect of the larger atomic weight of Ba. The Tc of the sample is as low as 2.7 K, and a good linear fitting is obtained at T 2 < 20 K 2 , as shown in considerably smaller than that (0.79-1.17) of CaIr2 and SrIr2 [15][16][17].…”

Section: Superconducting Propertiesmentioning

confidence: 88%

“…where Hc2(0) is the upper critical field at 0 K. The Hc2(0) of BaIr2 was found to be higher than those of CaIr2 and SrIr2 (40-65 kOe [15][16][17]) despite BaIr2 having a considerably lower Tc. Therefore, the Hc2(0) of BaIr2 exceeded the Pauli paramagnetic limit (HPauli) of 1.86Tc = 50 kOe [34,35].…”

Section: Superconducting Propertiesmentioning

confidence: 92%

“…Laves phases have been the subject of intensive experimental and theoretical studies [15][16][17][18][19][20]. In AIr2, the SOI has been reported to have a significant impact on the physical properties because of the changes in band dispersion, the complexity of the Fermi surface, and enhancement of electron-phonon coupling [15][16][17]20].…”

Section: Introductionmentioning

confidence: 99%

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High-pressure synthesis and superconductivity of the novel laves phase BaIr2

et al. 2022

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Section: Superconducting Propertiesmentioning

confidence: 66%

Section: Superconducting Propertiesmentioning

confidence: 88%

Section: Superconducting Propertiesmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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High-pressure synthesis and superconductivity of the novel laves phase BaIr2

et al. 2022

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“…Substituting eq. (1-3) to the above formula, one can see that I does not explicitly depend on phonon frequency [27]:…”

Section: Phonons and Electron-phonon Couplingmentioning

confidence: 91%

Pressure effects on the electronic structure, phonons, and superconductivity of noncentrosymmetric ThCoC2

Kuderowicz,

Wójcik,

Wiendlocha

2022

Preprint

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The electronic structure, phonons, electron-phonon coupling, and superconductivity are theoretically studied in noncentrosymmetric superconductor ThCoC2 as a function of pressure, in the pressure range 0 -20 GPa. We found that the electronic band splitting induced by the spin-orbit coupling is enhanced under pressure. In spite of the overall stiffening of the crystal lattice, the electron-phonon coupling constant λ increases with pressure, from 0.583 at 0 GPa to 0.652 at 20 GPa. If the isotropic Eliashberg electron-phonon coupling theory is used to simulate the effect on the critical temperature Tc, such an increase in λ results in a substantial increase of Tc from 2.5 K at 0 GPa to 4 K at 20 GPa. This shows that examining the effect of pressure offers a chance to resolve the pairing mechanism in ThCoC2.

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Materials Research at Nanjing University

Zhu

Chen

et al. 2020

Advanced Materials

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for research and education opened to house the academic departments and research centers, embodying CEAS's global vision and forward-looking plan.Materials science and advanced engineering is a comprehensive interdisciplinary field, living in a collaborative space of physics, chemistry, biology, and engineering. Besides CEAS, materials research is distributed in several other schools at Nanjing University, including the School of Chemistry and Chemical Engineering,

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Strong-coupling superconductivity of SrIr2 and SrRh2 : Phonon engineering of metallic Ir and Rh

Cited by 19 publications

References 42 publications

High-pressure synthesis and superconductivity of the novel laves phase BaIr2

High-pressure synthesis and superconductivity of the novel laves phase BaIr2

Pressure effects on the electronic structure, phonons, and superconductivity of noncentrosymmetric ThCoC2

Materials Research at Nanjing University

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