1. |
- Strand, Hugo, 1983-, et al.
(författare)
-
Magnetic response of Sr2RuO4 : quasi-local spin fluctuations due to Hund’s coupling
- 2019
-
Ingår i: Physical Review B. Condensed Matter and Materials Physics. - New York : American Physical Society. - 1098-0121 .- 1550-235X. ; 100:12
-
Tidskriftsartikel (refereegranskat)abstract
- We study the magnetic susceptibility in the normal state of Sr2RuO4 using dynamical mean-field theory including dynamical vertex corrections. Besides the well known incommensurate response, our calculations yield quasi-local spin fluctuations which are broad in momentum and centered around the Gamma-point, in agreement with recent inelastic neutron scattering experiments [Steffens et al., Phys. Rev. Lett. 122, 047004 (2019)]. We show that these quasi-local fluctuations are controlled by the Hund’s coupling and account for the dominant contribution to the momentum-integrated response. While all orbitals contribute equally to the incommensurate response, the enhanced Gamma-point response originates from the planar xy orbital.
|
|