Improved Single-Crystal Growth of Sr${}_2$RuO${}_4$

Abstract

High-quality single crystals are essentially needed for the investigation of the novel bulk properties of unconventional superconductors. The availability of such crystals grown by the floating-zone method has helped to unveil the unconventional superconductivity of the layered perovskite Sr${}_2$RuO${}_4$, which is considered as a strong candidate of a topological spin-triplet superconductor. Yet, recent progress of investigations urges further efforts to obtain ultimately high-quality crystalline samples. In this paper, we focus on the method of preparation of feed rods for the floating-zone melting and report on the improvements of the crystal growth. We present details of the improved methods used to obtain crystals with superconducting transition temperatures $T_{\mathrm{c}}$ that are consistently as high as 1.4 K, as well as the properties of these crystals.

arXiv comment9 pages, 6 figures

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Cited by in corpus (27)

• Split superconducting and time-reversal symmetry-breaking transitions, and magnetic order in Sr${}_2$RuO${}_4$ under uniaxial stress
• Thermodynamic Evidence for a Two-Component Superconducting Order Parameter in Sr${}_2$RuO${}_4$
• Direct Observation of a Uniaxial Stress-driven Lifshitz Transition in Sr${}_2$RuO${}_4$
• Elastocaloric determination of the phase diagram of Sr${}_2$RuO${}_4$
• High sensitivity heat capacity measurements on Sr2RuO4 under uniaxial pressure
• 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
• Materials challenges for SrRuO3: from conventional to quantum electronics
• Giant lattice softening at a Lifshitz transition in Sr${}_2$RuO${}_4$
• Spontaneous superconducting diode effect in non-magnetic Nb/Ru/Sr${}_2$RuO${}_4$ topological junctions
• Distinct spin and orbital dynamics in 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
• $\mu$SR measurements on Sr${}_2$RuO${}_4$ under $⟨110⟩$ uniaxial stress
• Strong Increase in Ultrasound Attenuation Below T${}_{\mathrm{c}}$ in Sr${}_2$RuO${}_4$: Possible Evidence for Domains
• Enhanced Seebeck coefficient through the magnetic fluctuations in Sr${}_2$Ru${}_{1-x}{M}_x$O${}_4$ ($M=$ Co, Mn)
• Upper Critical Field of Sr${}_2$RuO${}_4$ under In-Plane Uniaxial Pressure
• The Lorenz ratio as a guide to scattering contributions to Planckian transport
• Orbital dichotomy of Fermi liquid properties in Sr${}_2$RuO${}_4$ revealed by Raman spectroscopy
• A Review of Electronic Transport in Superconducting Sr${}_2$RuO${}_4$ Junctions
• Propagating charge carrier plasmon in Sr2RuO4
• Growth of ultra-clean single crystals of RuO2
• Direct evidence for the absence of coupling between shear strain and superconductivity in Sr2RuO4
• Muon Knight shift as a precise probe of the superconducting symmetry of Sr${}_2$RuO${}_4$
• Intrinsic defect intolerance in the ultra-pure metal PtSn${}_4$
• Optical and acoustic plasmons in the layered material Sr${}_2$RuO${}_4$
• High-resolution magnetostriction measurements of the Pauli-limited superconductor Sr2RuO4