Zeitschriftenartikel:
L. Fanfarillo, A. Valli, M. Capone:
"Synergy between Hund-driven correlations and boson-mediated Superconductivity";
Physical Review Letters,
125
(2020),
S. 177001-1
- 177001-6.
Kurzfassung englisch:
Multiorbital systems such as the iron-based superconductors provide a new avenue to attack the long-standing problem of superconductivity in strongly correlated systems. In this work we study the superconductivity driven by a generic bosonic mechanism in a multiorbital model including the full dynamical electronic correlations induced by the Hubbard U and the Hund´s coupling. We show that superconductivity survives much more in a Hund´s metal than in an ordinary correlated metal with the same degree of correlation. The redistribution of spectral weight characteristic of the Hund´s metal reflects also in the enhancement of the orbital-selective character of the superconducting gaps, in agreement with experiments in iron-based superconductors.
"Offizielle" elektronische Version der Publikation (entsprechend ihrem Digital Object Identifier - DOI)
http://dx.doi.org/10.1103/PhysRevLett.125.177001
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.