Rigid-Band Shift of the Fermi Level in a Strongly Correlated Metal: Sr(2-y)La(y)RuO(4)

Abstract

We report a systematic study of electron doping of Sr2RuO4 by non-isovalent substitution of La^(3+) for Sr^(2+). Using a combination of de Haas-van Alphen oscillations, specific heat, and resistivity measurements, we show that electron doping leads to a rigid-band shift of the Fermi level corresponding to one doped electron per La ion, with constant many-body quasiparticle mass enhancement over the band mass. The susceptibility spectrum is substantially altered and enhanced by the doping but this has surprisingly little effect on the strength of the unconventional superconducting pairing.

4 pages, 3 figures

References in corpus (3)

• Angle-resolved photoemission spectroscopy of the cuprate superconductors
• Inelastic neutron scattering study of magnetic excitations in Sr${}_2$RuO${}_4$
• Effects of In-Plane Impurity Substitution in Sr2RuO4

Cited by in corpus (16)

• Unsplit superconducting and time reversal symmetry breaking transitions in Sr${}_2$RuO${}_4$ under hydrostatic pressure and disorder
• The Superconductivity of Sr${}_2$RuO${}_4$ Under $c$-Axis Uniaxial Stress
• Anomalous self-energy and Fermi surface quasi-splitting in the vicinity of a ferromagnetic instability
• Superconductivity in Correlated Multi-Orbital Systems with Spin-Orbit Coupling: Coexistence of Even- and Odd-Frequency Pairing and the Case of Strontium Ruthenate
• 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
• Low-Temperature Hall Effect in Substituted Sr2RuO4
• Thermal Hall conductivity and topological transition in a chiral p-wave superconductor for Sr2RuO4
• $\mu$SR measurements on Sr${}_2$RuO${}_4$ under $⟨110⟩$ uniaxial stress
• Enhanced Seebeck coefficient through the magnetic fluctuations in Sr${}_2$Ru${}_{1-x}{M}_x$O${}_4$ ($M=$ Co, Mn)
• Origin of the Heavy Fermion Behavior in Ca_{2-x}Sr_{x}RuO_{4}: Roles of Coulomb Interaction and the Rotation of RuO_{6} octahedra
• Time-reversal symmetry breaking from lattice dislocations in superconductors
• Negatively enhanced thermopower near a Van Hove singularity in electron-doped Sr${}_2$RuO${}_4$
• Anisotropic Seebeck coefficient of ${\mathrm{Sr}}_2\mathrm{Ru}{\mathrm{O}}_4$ in the incoherent regime
• Thermal Hall conductivity in the spin-triplet superconductor with broken time-reversal symmetry
• Spin Fluctuations in Sr${}_{1.8}$La${}_{0.2}$RuO${}_4$