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Insulator-metal transition in solid hydrogen: Implication of electronic structure calculations for recent experiments
I. I. Mazin, Ronald E. Cohen
Electronic structure calculations for compressed molecular hydrogen are performed to provide more insight into the diversity of phenomena recently observed experimentally. We perfo…
Hohenberg-Kohn theorem is valid
I. I. Mazin, R. E. Cohen
In a recent PRL, Gonze et al claim that the density functional theory in Hohenberg-Kohn formulation is not valid for crystalline solids in a homogenious electric field. They introd…
"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…