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Magnetic response o...
Magnetic response of Sr2RuO4 : quasi-local spin fluctuations due to Hund’s coupling
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- Strand, Hugo, 1983- (författare)
- Center for Computational Quantum Physics, Flatiron institute, Simons Foundation, New York, USA
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- Zingl, Manuel (författare)
- Center for Computational Quantum Physics, Flatiron institute, Simons Foundation, New York, USA
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- Wentzell, Nils (författare)
- Center for Computational Quantum Physics, Flatiron institute, Simons Foundation, New York, USA
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- Parcollet, Olivier (författare)
- Center for Computational Quantum Physics, Flatiron institute, Simons Foundation, New York, USA; Institut de Physique Th ́eorique (IPhT), Gif-sur-Yvette, France
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- Georges, Antoine (författare)
- Center for Computational Quantum Physics, Flatiron institute, Simons Foundation, New York, USA; Coll`ege de France, Paris, France; Centre de Physique Th ́eorique, Ecole Polytechnique, Palaiseau Cedex, France; Department of Quantum Matter Physics, University of Geneva, Geneva, Switzerland
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(creator_code:org_t)
- New York : American Physical Society, 2019
- 2019
- Engelska.
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Ingår i: Physical Review B. Condensed Matter and Materials Physics. - New York : American Physical Society. - 1098-0121 .- 1550-235X. ; 100:12
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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