Multiple metamagnetic quantum criticality in Sr${}_3$Ru${}_2$O${}_7$

Abstract

Bilayer strontium ruthenate Sr${}_3$Ru${}_2$O${}_7$ displays pronounced non-Fermi liquid behavior at magnetic fields around 8 T, applied perpendicular to the ruthenate planes, which previously has been associated with an itinerant metamagnetic quantum critical end point (QCEP). We focus on the magnetic Grüneisen parameter ${\Gamma }_{\mathrm{H}}$, which is the most direct probe to characterize field-induced quantum criticality. We confirm quantum critical scaling due to a putative two-dimensional QCEP near 7.845(5) T, which is masked by two ordered phases A and B, identified previously by neutron scattering. In addition we find evidence for a QCEP at 7.53(2) T and determine the quantum critical regimes of both instabilities and the effect of their superposition.

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Cited by in corpus (17)

• Magnetotransport of dirty-limit van Hove singularity quasiparticles
• Multicritical Fermi surface topological transitions
• Grüneisen parameter studies on heavy fermion quantum criticality
• Thermodynamic perspective on the field-induced behavior of $\alpha$-RuCl${}_3$
• Theory of the Strange Metal Sr${}_3$Ru${}_2$O${}_7$
• Strain-induced orbital energy shift in antiferromagnetic RuO2 revealed by resonant elastic x-ray scattering
• Low temperature thermodynamic investigation of the phase diagram of Sr${}_3$Ru${}_2$O${}_7$
• Classification of materials with divergent magnetic Grüneisen parameter
• Competing magnetic orders in quantum critical Sr${}_3$Ru${}_2$O${}_7$
• Atomic-scale imaging of emergent order at a magnetic-field-induced Lifshitz transition
• Reinforcement of superconductivity by quantum critical fluctuations of metamagnetism in UTe${}_2$
• Field-induced quantum critical point in the new itinerant antiferromagnet Ti${}_3$Cu${}_4$
• Holographic study of shear viscosity and butterfly velocity for magnetic field-driven quantum criticality
• Evolution of Interorbital Superconductor to Intraorbital Spin-Density Wave in Layered Ruthenates
• Nonlinear Pauli Susceptibilities in Sr${}_3$Ru${}_2$O${}_7$ and Universal Features of Itinerant Metamagnetism
• Magnetic-field-controlled spin fluctuations and quantum criticality in Sr3Ru2O7
• Anisotropic magnetoelastic coupling in the honeycomb magnet Na${}_3$Co${}_2$SbO${}_6$