Field-induced paramagnons at the metamagnetic transition in Ca1.8Sr0.2RuO4

Abstract

The magnetic excitations in Ca1.8Sr0.2RuO4 were studied across the metamagnetic transition and as a function of temperature using inelastic neutron scattering. At low temperature and low magnetic field the magnetic response is dominated by a complex superposition of incommensurate antiferromagnetic fluctuations. Upon increasing the magnetic field across the metamagnetic ransition, paramagnon and finally well-defined magnon scattering is induced, partially suppressing the incommensurate signals. The high-field phase in Ca1.8Sr0.2RuO4 has, therefore, to be considered as an intrinsically ferromagnetic state stabilized by the magnetic field.

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• Thermodynamic Properties of (Ca,Sr)${}_2$RuO${}_4$ in Magnetic Fields

Cited by in corpus (6)

• Coulomb-Enhanced Spin-Orbit Splitting: The Missing Piece in the Sr2RhO4 Puzzle
• Magnetotransport of dirty-limit van Hove singularity quasiparticles
• Spin fluctuations in Sr2RuO4 from polarized neutron scattering: implications for superconductivity
• Microscopic Route to Nematicity in Sr3Ru2O7
• Magnetic excitations in the metallic single-layer Ruthenates Ca(2-x)Sr(x)RuO(4) studied by inelastic neutron scattering
• Magnon dispersion in ferromagnetic SrRuO${}_3$