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- Carnegie Institution for ScienceUS218 papers
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6 papers · 1 filter
Weighted Density Approximation Description of Insulating YH and LaH
Zhigang Wu, R. E. Cohen, D. J. Singh +2
Density functional calculations within the weighted density approximation (WDA) are presented for YH and LaH. We investigate some commonly used pair-distribution functions…
Quantum and Classical Orientational Ordering in Solid Hydrogen
I. I. Mazin, R. J. Hemley, A. F. Goncharov +2
We present a unified view of orientational ordering in phases I, II, and III of solid hydrogen. Phases II and III are orientationally ordered, while the ordering objects in phase I…
"Chain scenario" for Josephson tunneling with pi-shift in YBa2Cu3O7
I. I. Mazin, A. A. Golubov, A. D. Zaikin
We point out that all current Josephson-junction experiments probing directly the symmetry of the superconducting state in YBa2Cu3O7, can be interpreted in terms of the bilayer ant…
Neutron scattering and superconducting order parameter in YBa2Cu3O7
I. I. Mazin, Victor M. Yakovenko
We discuss the origin of the neutron scattering peak at 41 meV observed in YBaCuO below . The peak may occur due to spin-flip electron excitations across the super…
s-wave superconductivity from antiferromagnetic spin-fluctuation model for bilayer materials
A. I. Liechtenstein, I. I. Mazin, O. K. Andersen
It is usually believed that the spin-fluctuation mechanism for high-temperature superconductivity results in d-wave pairing, and that it is destructive for the conventional phonon-…
Sign reversal of the order parameter in s-wave superconductors
A. A. Golubov, I. I. Mazin
We show that in a superconductor where two or more bands cross the Fermi level it is possible, in the framework of the conventional (s-wave) BCS theory, that the sign of the superc…