Metamagnetic quantum criticality in Sr3Ru2O7 studied by thermal expansion

Abstract

We report low-temperature thermal expansion measurements on the bilayer ruthenate Sr${}_3$Ru${}_2$O${}_7$ as a function of magnetic field applied perpendicular to the Ruthenium-oxide planes. The field-dependence of the c-axis expansion coefficient indicates the accumulation of entropy close to 8 Tesla, related to an underlying quantum critical point. The latter is masked by two first-order metamagnetic transitions which bound a regime of enhanced entropy. Outside this region the singular thermal expansion behavior is compatible with the predictions of the itinerant theory for a two-dimensional metamagnetic quantum critical end point.

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• Loschmidt Echo and Berry phase of the quantum system coupled to the XY spin chain: Proximity to quantum phase transition
• Quantum bicriticality in the heavy-fermion metamagnet YbAgGe
• Sr3Ru2O7: Thermodynamics of Phase Formation in a Quantum Critical Metal
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• Grüneisen parameter studies on heavy fermion quantum criticality
• Universal signatures of the metamagnetic quantum critical endpoint: Application to CeRu2Si2
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• Meta-nematic transitions in a bilayer system: Application to the bilayer ruthenate
• Anomalous reduction of the Lorenz ratio at the quantum critical point in YbAgGe
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• Multi-orbital physics in Fermi liquids prone to magnetic order
• Quantum phase transition in the heavy-fermion compound YbIr${}_2$Si${}_2$
• Thermal conductivity in the vicinity of the quantum critical endpoint in Sr3Ru2O7
• Effect of magnetic field on spontaneous Fermi surface symmetry breaking
• Multiple metamagnetic quantum criticality in Sr${}_3$Ru${}_2$O${}_7$
• Quasi-classical physics and T-linear resistivity in both strongly correlated and ordinary metals
• LDA+Slave-Boson approach to the correlated electronic structure of the metamagnetic bilayer ruthenate Sr${}_3$Ru${}_2$O${}_7$
• High-magnetic field lattice length changes in URu2Si2
• From quantum criticality to enhanced thermopower in strongly correlated layered cobalt oxide
• Ferroelectric order versus metallicity in Sr${}_{1-x}$Ca${}_x$TiO${}_{3-\delta }$ ($x=0.009$)
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• Unusual metamagnetism in CeIrIn${}_5$
• Novel Quantum Criticality in CeRu${}_2$Si${}_2$ near Absolute Zero Observed by Thermal Expansion and Magnetostriction
• Classification of materials with divergent magnetic Grüneisen parameter
• Low temperature thermodynamic investigation of the phase diagram of Sr${}_3$Ru${}_2$O${}_7$
• Quantum criticality in itinerant metamagnets
• Missing magnetism in Sr${}_4$Ru${}_3$O${}_{10}$: Indication for Antisymmetric Exchange Interaction
• The role of bandstructure in the thermodynamic properties of itinerant metamagnets
• Signatures of a Quantum Critical Endpoint in the Kitaev Candidate Na${}_2$Co${}_2$TeO${}_6$
• Probing the d_{x2-y2}-wave Pomeranchuk instability by ultrasound
• Magnetoelastic coupling in URu2Si2: Probing multipolar correlations in the hidden order state
• Reinforcement of superconductivity by quantum critical fluctuations of metamagnetism in UTe${}_2$
• Electronic nematicity and its relation to quantum criticality in Sr_3Ru_2O_7 studied by thermal expansion
• ω/T scaling of the optical conductivity in strongly correlated layered cobalt oxide
• Flat Bands and Enigma of Metamagnetic Quantum Critical Regime in Sr3Ru2O7
• Unveiling a nematic quantum critical point in multi-orbital systems
• Mean-field theory on a coupled system of ferromagnetism and electronic nematic order
• Quantum critical behaviour and Lifshitz transition in intermediate valence $\alpha$-YbAlB${}_4$
• Anisotropy of the low-temperature magnetostriction of Sr3Ru2O7
• Critical behavior and evidence of dimensional crossover in quasi-two-dimensional Li${}_2$FeSiO${}_4$