Reply to the ‘Comment on “High-temperature superconductivity in transition metallic hydrides MH11 (M = Mo, W, Nb, and Ta) under high pressure”’ by X. Zheng and J. Zheng, Phys. Chem. Chem. Phys., 2022, 24, DOI: 10.1039/D1CP01474A

2022 ◽  
Author(s):  
Mingyang Du ◽  
Zihan Zhang ◽  
Hao Song ◽  
Hongyu Yu ◽  
Tian Cui ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Metal Hydride ◽  
High Temperature Superconductivity ◽  
Chem Phys ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Phys Chem Chem Phys

For the metal hydride MoH11, more than 60% of the electron–phonon coupling (λ) is contributed by hydrogen which leads to a diminishing role of the umklapp phonons.

Comment on “High-temperature superconductivity in transition metallic hydrides MH11 (M = Mo, W, Nb, and Ta) under high pressure” by M. Du, Z. Zhang, H. Song, H. Yu, T. Cui, V. Z. Kresinc and D. Duan, Phys. Chem. Chem. Phys., 2021, 23, 6717

2022 ◽  
Author(s):  
X. H. Zheng ◽  
J. X. Zheng
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
High Temperature Superconductivity ◽  
Chem Phys ◽  
Entire Surface ◽  
Fermi Sphere ◽  
Phys Chem Chem Phys

In superconductors, scattered electrons cover the entire surface of the Fermi sphere (circle in the figure, valency = 3). In the MP scheme in the article concerned, the shaded wedge confines coverage, causing errors in results.

scholarly journals Giant Electron-Phonon Anomaly in DopedLa2CuO4and Other Cuprates

2010 ◽  
Vol 2010 ◽  
pp. 1-24 ◽  
Author(s):  
D. Reznik
Keyword(s):  
High Temperature ◽  
High Temperature Superconductivity ◽  
Anomalous Behavior ◽  
Phonon Coupling ◽  
Subsequent Work ◽  
Electron Phonon Coupling ◽  
Bond Stretching ◽  
Mechanism Of Superconductivity ◽  
Phonon Anomaly ◽  
Made In

Since conventional superconductivity is mediated by phonons, their role in the mechanism of high temperature superconductivity has been considered very early after the discovery of the cuprates. The initial consensus was that phonons could not produce transition temperatures near 100 K, and the main direction of research focused on nonphononic mechanisms. Subsequent work last reviewed by L. Pintschovius in 2005 showed that electron-phonon coupling in the cuprates is surprisingly strong for some phonons and its role is controversial. Experiments performed since then identified anomalous behavior of certain Cu–O bond-stretching phonons in cuprates as an important phenomenon that is somehow related to the mechanism of superconductivity. A particularly big advance was made in the study of dopedLa2CuO4. This work is reviewed here.

Role of electron–phonon coupling in thermal conductivity of metallic nanofluids

2019 ◽  
Vol 52 (48) ◽  
pp. 485302 ◽  
Author(s):  
Dong-Xing Song ◽  
Yu-Feng Zhang ◽  
Wei-Gang Ma ◽  
Xing Zhang
Keyword(s):  
Thermal Conductivity ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

Role of structural instability in high-temperature superconductivity and its effect on isotope effect

1992 ◽  
Vol 128 (1) ◽  
pp. 105-110 ◽  
Author(s):  
A. Bussmann-Holder ◽  
A. R. Bishop ◽  
A. Migliori ◽  
Z. Fisk
Keyword(s):  
High Temperature ◽  
Isotope Effect ◽  
High Temperature Superconductivity ◽  
Structural Instability
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