Suppressed fluctuations as the origin of the static magnetic order in strained Sr${}_2$RuO${}_4$

Abstract

Combining first principle density functional calculations and Moriya's self-consistent renormalization theory, we explain the recently reported counterintuitive appearance of an ordered magnetic state in uniaxially strained Sr${}_2$RuO${}_4$ beyond the Lifshits transition. We show that strain weakens the quantum spin fluctuations, which destroy the static order, more strongly than the tendency to magnetism. A different rate of decrease of the spin fluctuations vs. magnetic stabilization energy promotes the onset of a static magnetic order beyond a critical strain.

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Cited by in corpus (6)

• Giant lattice softening at a Lifshitz transition in Sr${}_2$RuO${}_4$
• Competition between d-wave superconductivity and magnetism in uniaxially strained Sr2RuO4
• Conditions for orbital selective altermagnetism in Sr${}_2$RuO${}_4$: tight binding model, similarities with cuprates and implications on superconductivity
• Negatively enhanced thermopower near a Van Hove singularity in electron-doped Sr${}_2$RuO${}_4$
• Polar Kerr Effect in Multiband Spin-Orbit Coupled Superconductors
• Competing spin-fluctuations in Sr${}_2$RuO${}_4$ and their tuning through epitaxial strain