Strain Control of Fermiology and Many-Body Interactions in Two-Dimensional Ruthenates

Abstract

Here we demonstrate how the Fermi surface topology and quantum many-body interactions can be manipulated via epitaxial strain in the spin-triplet superconductor Sr${}_2$RuO${}_4$ and its isoelectronic counterpart Ba${}_2$RuO${}_4$ using oxide molecular beam epitaxy (MBE), \emph{in situ} angle-resolved photoemission spectroscopy (ARPES), and transport measurements. Near the topological transition of the $\gamma$ Fermi surface sheet, we observe clear signatures of critical fluctuations, while the quasiparticle mass enhancement is found to increase rapidly and monotonically with increasing Ru-O bond distance. Our work demonstrates the possibilities for using epitaxial strain as a disorder-free means of manipulating emergent properties, many-body interactions, and potentially the superconductivity in correlated materials.

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Cited by in corpus (61)

• Electronic structure of quantum materials studied by angle-resolved photoemission spectroscopy
• Photoferroelectric oxides
• Strong Peak in $T_c$ of Sr${}_2$RuO${}_4$ Under Uniaxial Pressure
• Non-Abelian band topology in noninteracting metals
• High-resolution photoemission on Sr2RuO4 reveals correlation-enhanced effective spin-orbit coupling and dominantly local self-energies
• Strain-stabilized superconductivity
• Resistivity in the Vicinity of a Van Hove Singularity: Sr${}_2$RuO${}_4$ Under Uniaxial Pressure
• Direct Observation of a Uniaxial Stress-driven Lifshitz Transition in Sr${}_2$RuO${}_4$
• Magnetotransport of dirty-limit van Hove singularity quasiparticles
• Spin-Orbit Coupling and Electronic Correlations in Sr2RuO4
• In-situ strain-tuning of the metal-insulator-transition of Ca${}_2$RuO${}_4$ in angle-resolved photoemission experiments
• Elastocaloric determination of the phase diagram of Sr${}_2$RuO${}_4$
• Classification of Critical Points in Energy Bands Based on Topology, Scaling and Symmetry
• High sensitivity heat capacity measurements on Sr2RuO4 under uniaxial pressure
• Supermetal
• Magnetic response of Sr${}_2$RuO${}_4$: quasi-local spin fluctuations due to Hund's coupling
• Tuning the metal-insulator transition in d^1 and d^2 perovskites by epitaxial strain: a first principles-based study
• Theory of the Strange Metal Sr${}_3$Ru${}_2$O${}_7$
• Quasiparticle Interference and Strong Electron-Mode Coupling in the Quasi-One-Dimensional Bands of Sr${}_2$RuO${}_4$
• The Superconductivity of Sr${}_2$RuO${}_4$ Under $c$-Axis Uniaxial Stress
• Molecular beam epitaxy growth of superconducting Sr2RuO4 films
• Tailoring the electronic properties of Ca${}_2$RuO${}_4$ via epitaxial strain
• Synthesis and electronic properties of Nd${}_{n+1}$Ni${}_n$O${}_{3n+1}$ Ruddlesden-Popper nickelate thin films
• Manipulating superconductivity in ruthenates through Fermi surface engineering
• Giant lattice softening at a Lifshitz transition in Sr${}_2$RuO${}_4$
• Deviation from the Fermi-Liquid Transport Behavior in the Vicinity of a Van Hove Singularity
• Strain Tuning of Plasma Frequency in Vanadate, Niobate, and Molybdate Perovskite Oxides
• Superconductivity in Correlated Multi-Orbital Systems with Spin-Orbit Coupling: Coexistence of Even- and Odd-Frequency Pairing and the Case of Strontium Ruthenate
• The Hall number across a van Hove singularity
• Orbitally selective breakdown of Fermi liquid quasiparticles in Ca${}_{1.8}$Sr${}_{0.2}$RuO${}_4$
• Strain-induced orbital energy shift in antiferromagnetic RuO2 revealed by resonant elastic x-ray scattering
• Superconductivity in Sr${}_2$RuO${}_4$ thin film under biaxial strain
• Interplay between spin-orbit coupling and van Hove singularity in the Hund's metallicity of Sr${}_2$RuO${}_4$
• Constraints on the superconducting state of Sr${}_2$RuO${}_4$ from elastocaloric measurements
• On the engineering of higher-order Van Hove singularities in two dimensions
• Hybrid d/p-wave altermagnetism in Ca${}_3$Ru${}_2$O${}_7$ and strain-controlled spin splitting
• Growth of strontium ruthenate films by hybrid molecular beam epitaxy
• Spin-orbit and anisotropic strain effects on the electronic correlations of Sr${}_2$RuO${}_4$
• In-plane magnetic penetration depth in Sr${}_2$RuO${}_4$: muon-spin rotation/relaxation study
• Hierarchy of Lifshitz transitions in the surface electronic structure of Sr${}_2$RuO${}_4$ under uniaxial compression
• Anomalous Enhancement of Upper Critical Field in Sr2RuO4 Thin Films
• Electronic and vibrational signatures of ruthenium vacancies in Sr${}_2$RuO${}_4$ thin films
• Multiband mean-field theory of the $d+ig$ superconductivity scenario in Sr${}_2$RuO${}_4$
• Breakdown of the Wiedemann-Franz law at the Lifshitz point of strained Sr${}_2$RuO${}_4$
• Inter-orbital p- and d-wave pairings between $d_{xz/yz}$ and $d_{xy}$ orbitals in Sr${}_2$RuO${}_4$
• Characterization of two electronic subsystems in cuprates through optical conductivity
• SrRuO${}_3$-SrTiO${}_3$ heterostructure as a possible platform for studying unconventional superconductivity in Sr${}_2$RuO${}_4$
• Quantum Oscillations and the Quasiparticle Properties of Thin Film Sr${}_2$RuO${}_4$
• Magic angle of Sr${}_2$RuO${}_4$: Optimizing correlation-driven superconductivity
• Evidence for weak antilocalization-weak localization crossover and metal-insulator transition in CaCu${}_3$Ru${}_4$O${}_{12}$ thin films
• Thermal Hall conductivity in the spin-triplet superconductor with broken time-reversal symmetry
• Orbitally-selective Breakdown of the Fermi Liquid and Simultaneous Enhancement of Metallic and Insulating States in Correlated Multi-band Systems with Spin-orbit Coupling
• Robust semi-Dirac points and unconventional topological phase transitions in doped superconducting Sr2IrO4 tunnel coupled to t2g electron systems
• Electronic nematic order in the normal state of strontium ruthenate
• Competing spin-fluctuations in Sr${}_2$RuO${}_4$ and their tuning through epitaxial strain
• Spin Fluctuations in Sr${}_{1.8}$La${}_{0.2}$RuO${}_4$
• Multipolar Fermi Surface Deformations in Sr${}_2$RuO${}_4$ Probed by Resistivity and Sound Attenuation: A Window into Electron Viscosity and the Collision Operator
• Evidence for a square-square vortex lattice transition in a high-$T_{\text{c}}$ cuprate superconductor
• Strain Engineering of van Hove Singularity and Coupled Itinerant Ferromagnetism in Quasi-2D Oxide Superlattices
• Anisotropic scattering rates in strain-tuned Sr${}_2$RuO${}_4$
• Observation of near EF Fermi-arc van Hove singularity with prominent coupling to phonon in a van der Waals coupled Weyl semimetal