Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session E14: Fe-based Superconductors -- Electron Correlation and Orbital Selectivity
8:00 AM–10:48 AM,
Tuesday, March 6, 2018
LACC Room: 304B
Sponsoring Unit: DMP
Chair: Adriana Moreo, Univ of Tennessee, Knoxville
Abstract: E14.00004 : Orbital Selectivity from high and low-energy scales: the key feature of Iron-based supercondutors physics
9:00 AM–9:12 AM
The multiorbital character of the band structure close to the Fermi level complicates the analysis of correlation effects in many unconventional superconductors. In particular in Iron-based materials, contrasting experimental evidences of weak and strong regime of electronic correlation polarized theoretical approaches around low-energy effective models or, on the opposite side, strongly correlated approaches.
In this talk I will show that complementary and consistent results concerning the physics of iron-based materials follow from both low- and high- energy approaches once the multiorbital character is taken into account. The orbital selectivity emerges as a main feature at every scale. Our results discloses a scenario in which the key ingredient of the pairing itself comes from a new and unconventional cooperative interplay between low- and high-energy scale of electronic interactions.
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