Nematic quantum critical point without magnetism in FeSe1-xSx superconductors

Abstract

The importance of antiferromagnetic fluctuations are widely acknowledged in most unconventional superconductors. In addition, cuprates and iron pnictides often exhibit unidirectional (nematic) electronic correlations, including stripe and orbital orders, whose fluctuations may also play a key role for electron pairing. However, these nematic correlations are intertwined with antiferromagnetic or charge orders, preventing us to identify the essential role of nematic fluctuations. This calls for new materials having only nematicity without competing or coexisting orders. Here we report systematic elastoresistance measurements in FeSe${}_{1-x}$S${}_x$ superconductors, which, unlike other iron-based families, exhibit an electronic nematic order without accompanying antiferromagnetic order. We find that the nematic transition temperature decreases with sulphur content $x$, whereas the nematic fluctuations are strongly enhanced. Near $x\approx 0.17$, the nematic susceptibility diverges towards absolute zero, revealing a nematic quantum critical point. This highlights FeSe${}_{1-x}$S${}_x$ as a unique nonmagnetic system suitable for studying the impact of nematicity on superconductivity.

13 pages, 4 figures. Some discussions are added

References in corpus (14)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• Theory of Intertwined Orders in High Temperature Superconductors
• Orbital-driven nematicity in FeSe
• Field-induced superconducting phase of FeSe in the BCS-BEC cross-over
• Substitution Effects on FeSe Superconductor
• Enhancement of superconductivity near a nematic quantum critical point
• Are non-Fermi-liquids stable to Cooper pairing?
• Dome-shaped magnetic order competing with high-temperature superconductivity at high pressures in FeSe
• Quasiparticle mass enhancement approaching optimal doping in a high-Tc superconductor
• Anomalous Fermi surface in FeSe seen by Shubnikov-de Haas oscillation measurements
• Pressure-induced antiferromagnetic transition and phase diagram in FeSe
• Superconductivity and phase instability of NH3-free Na-intercalated FeSe1-zSz
• Broken symmetries in URu2Si2
• Inverse correlation between quasiparticle mass and Tc in a cuprate high-Tc superconductor

Cited by in corpus (140)

• Nematicity, magnetism and superconductivity in FeSe
• The key ingredients of the electronic structure of FeSe
• On the Remarkable Superconductivity of FeSe and its Close Cousins
• Exotic Superconducting States in FeSe-based Materials
• Maximizing Tc by tuning nematicity and magnetism in FeSe1-xSx superconductors
• Quantum sensing of local magnetic field texture in strongly correlated electron systems under extreme conditions
• Two distinct superconducting pairing states divided by the nematic end point in FeSe${}_{1-x}$S${}_x$
• Highly Anisotropic Superconducting Gap in Nematically Ordered and Tetragonal Phases of FeSe${}_{1-x}$S${}_x$
• Evolution of the Fermi surface of the nematic superconductors FeSe1-xSx
• Quantum vortex core and missing pseudogap in the multi-band BCS-BEC-crossover superconductor FeSe
• Sixfold enhancement of superconductivity in a tunable electronic nematic system
• Quenched nematic criticality separating two superconducting domes in an iron-based superconductor under pressure
• Drastic suppression of superconducting $T_c$ by anisotropic strain near a nematic quantum critical point
• A Tale of Two Metals: contrasting criticalities in the pnictides and hole-doped cuprates
• Protonation induced high-Tc phases in iron-based superconductors evidenced by NMR and magnetization measurements
• Nematic Fluctuations in the Cuprate Superconductor Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Divergent nematic susceptibility near the pseudogap critical point in a cuprate superconductor
• Electronic nematic states tuned by isoelectronic substitution in bulk FeSe1-xSx
• Correlation between Superconductivity and Magnetic Fluctuations in Fe(Se1-xSx) Revealed by 77Se NMR
• Coexistence of orbital and quantum critical magnetoresistance in FeSe${}_{1-x}$S${}_x$
• Dome of magnetic order inside the nematic phase of sulfur-substituted FeSe under pressure
• Scattering mechanisms and electrical transport near an Ising nematic quantum critical point
• Strain-tuning of nematicity and superconductivity in single crystals of FeSe
• Unified phase diagram for iron-based superconductors
• Symmetric and antisymmetric strain as continuous tuning parameters for electronic nematic order
• Pure nematic quantum critical point accompanied by a superconducting dome
• Emergent XY electronic nematicity in iron-based superconductors
• Pairing instability near a lattice-influenced nematic quantum critical point
• Non-Fermi liquid transport in the vicinity of nematic quantum critical point of FeSe${}_{1-x}$S${}_x$ superconductor
• The relationship between transport anisotropy and nematicity in FeSe
• Anomalous high-magnetic field electronic state of the nematic superconductors FeSe${}_{1-x}$S${}_x$
• Hydrostatic and uniaxial pressure tuning of iron-based superconductors: Insights into superconductivity, magnetism, nematicity and collapsed tetragonal transitions
• Nematicity, magnetism and superconductivity in FeSe under pressure: Unified explanation based on the self-consistent vertex correction theory
• Transverse fields to tune an Ising-nematic quantum critical transition
• Room temperature local nematicity in FeSe superconductor
• Enhanced triplet superconductivity in next generation ultraclean UTe2
• Systematic study on transport properties of FeSe thin films with various degrees of strain
• The transport-structural correspondence across the nematic phase transition probed by elasto-x-ray diffraction
• Thermodynamics of transition to BCS-BEC crossover superconductivity in FeSe${}_{1-x}$S${}_x$
• Resistivity near a nematic quantum critical point: Impact of acoustic phonons
• Superconductivity without hole-pocket in electron-doped FeSe: Analysis beyond the Migdal-Eliashberg formalism
• Quantitative characterization of short-range orthorhombic fluctuations in FeSe through pair distribution function analysis
• Two superconducting states with broken time-reversal symmetry in FeSe1-xSx
• Collapse of critical nematic fluctuations in FeSe under pressure
• Elastoresistivity in the incommensurate charge density wave phase of BaNi${}_{\text{2}}$(As${}_{\text{1-x}}$P${}_{\text{x}}$)${}_{\text{2}}$
• Superconductivity-enhanced Nematicity and '$s+d$' Gap Symmetry in Fe(Se${}_{1-x}$S${}_x$)
• Two-dome superconductivity in FeS induced by a Lifshitz transition
• Growth of superconducting epitaxial films of sulfur substituted FeSe via pulsed laser deposition
• Hydrothermal synthesis and complete phase diagram of FeSe${}_{1-x}$S${}_x$ $(0\le x\le 1)$ single crystals
• A Rigorous Formalism of Unconventional Symmetry Breaking in Fermi Liquid Theory and Its Application to Nematicity in FeSe
• Separate tuning of nematicity and spin fluctuations to unravel the origin of superconductivity in FeSe
• Ionic-liquid-gating induced protonation and superconductivity in FeSe, FeSe0.93S0.07, ZrNCl, 1T-TaS2, and Bi2Se3
• Weakening of the diamagnetic shielding in FeSe${}_{1-x}$S${}_x$ at high pressures
• Magnetoresistance scaling, disorder, `hot spots' and the origin of $T$-linear resistivity in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Superconductivity induced by fluctuations of momentum-based multipoles
• Quasiparticle Excitations in the Superconducting State of FeSe Probed by Thermal Hall Conductivity in the Vicinity of the BCS-BEC Crossover
• Iron-based superconductors: teenage, complex, challenging
• Evolution of the nematic susceptibility in LaFe${}_{1-x}$Co${}_x$AsO
• Ultrafast nematic-orbital excitation in FeSe
• Enhanced superconducting pairing strength near a nonmagnetic nematic quantum critical point
• Superconductivity Mediated by Nematic Fluctuations in Tetragonal $\text{Fe}{\text{Se}}_{1-x}{\text{S}}_x$
• Bond Directional Anapole Order in a Spin-Orbit Coupled Mott Insulator Sr${}_2$(Ir${}_{1-x}$Rh${}_x$)O${}_4$
• Rigid platform for applying large tunable strains to mechanically delicate samples
• Spontaneous orbital polarization in the nematic phase of FeSe
• Evolution of transport properties in FeSe thin flakes with thickness approaching the two-dimensional limit
• Signatures of a Quantum Griffiths Phase close to an Electronic Nematic Quantum Phase Transition
• Impact of Nematicity on the Relationship between Antiferromagnetic Fluctuations and Superconductivity in FeSe0.91S0.09 Under Pressure
• Highly mobile carriers in orthorhombic phases of iron-based superconductors FeSe${}_{1-x}$S${}_x$
• Widespread orthorhombic fluctuations in the (Sr,Na)Fe${}_2$As${}_2$ family of superconductors
• Lattice-Shifted Nematic Quantum Critical Point in FeSe${}_{1-x}$S${}_x$
• Soft phonons reveal the nematic correlation length in Ba(Fe${}_{0.94}$Co${}_{0.06}$)${}_2$As${}_2$
• Spin excitations and the Fermi surface of superconducting FeS
• Elastoresistance measurements on CaKFe${}_4$As${}_4$ and KCa${}_2$Fe${}_4$As${}_4$F${}_2$ with the Fe site of $C_{2v}$ symmetry
• Close correlation between superconducting transition temperatures and carrier densities in Te- and S-substituted FeSe thin films
• Extended Magnetic Dome Induced by Low Pressures in Superconducting FeSe${}_{1\text{-}\mathrm{x}}$S${}_{\mathrm{x}}$
• Disorder-robust high-field superconducting phase of FeSe single crystals
• Measurement of Elastoresistivity at Finite Frequency by Amplitude Demodulation
• Low frequency Raman response near Ising-nematic quantum critical point: a memory matrix approach
• Pressure-induced reconstitution of Fermi surfaces and spin fluctuations in S-substituted FeSe
• ${}^{77}$Se-NMR Study under Pressure on 12%-S Doped FeSe
• Fabrication of tetragonal FeSe - FeS alloy films with high sulfur contents by alternate deposition
• Tests of nematic-mediated superconductivity applied to Ba${}_{1-x}$Sr${}_x$Ni${}_2$As${}_2$
• Role of nematicity in controlling spin fluctuations and superconducting Tc in bulk FeSe
• Structural-transition-induced quasi two-dimensional Fermi surface in FeSe
• Quadrupolar charge dynamics in the nonmagnetic FeSe${}_{1-x}$S${}_x$ superconductors
• Nematic transition and highly two-dimensional superconductivity in BaTi${}_2$Bi${}_2$O revealed by ${}^{209}$Bi-nuclear magnetic resonance/nuclear quadrupole resonance measurements
• Electronic Stripe Patterns Near the Fermi Level of Tetragonal Fe(Se,S)
• Strain-derivative of thermoelectric properties: a sensitive probe for nematicity
• Bulk and surface Dirac states accompanied by two superconducting domes in FeSe-based superconductors
• Dichotomy Between Orbital and Magnetic Nematic Instabilities in BaFe2S3
• Nematic spin correlations pervading the phase diagram of FeSe${}_{1-x}$S${}_x$
• Soft elastic constants from phonon spectroscopy in hole-doped Ba${}_{1-x}$(K,Na)${}_x$Fe${}_2$As${}_2$ and Sr${}_{1-x}Na$_x$Fe$_2$As$_2$
• Nematic Bogoliubov Fermi surfaces from magnetic toroidal order in FeSe${}_{1-x}$S${}_x$
• Multipolar nematic state of nonmagnetic FeSe based on the DFT+$U$
• Suppression of Superconductivity and Nematic Order in Fe${}_{1-y}$Se${}_{1-x}$S${}_x$ (0$\le$$x$$\le$1, $y$$\le$0.1) Crystals by Anion Height Disorder
• Nonlinear uniaxial pressure dependence of $T_c$ in iron-based superconductors
• Microscopic origin of ultranodal superconducting states in spin-1/2 systems
• Laser-induced coherent control of an electronic nematic quantum phase transition
• Universal relationship between low-energy antiferromagnetic fluctuations and superconductivity in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Piezoresistivity as a Fingerprint of Ferroaxial Transitions
• Magneto-elastic coupling in Fe-based superconductors
• Observation of a C-type short range antiferromagnetic order in expanded FeS
• Measurements of elastoresistance under pressure by combining in-situ tunable quasi-uniaxial stress with hydrostatic pressure
• Unusual Effects of Be doping in the Iron Based Superconductor FeSe
• Theories for charge-driven nematicity in kagome metals
• Sulfur-induced magnetism in FeSe${}_{1-x}$S${}_x$ thin films on LaAlO${}_3$ revealed by muon spin rotation/relaxation
• Variation of shear moduli across superconducting phase transitions
• Superconducting gap and nematic resonance at the quantum critical point observed by Raman scattering in $\mathrm{BaF}{\mathrm{e}}_2({\mathrm{As}}_{1-x}{\mathrm{P}}_x{)}_2$
• In-plane anisotropic response to the uniaxial pressure in the hidden order state of URu${}_2$Si${}_2$
• Charge Transport in Ba${}_{1-x}$Rb${}_x$Fe${}_2$As${}_2$ Single Crystals
• Unveiling the quasiparticle behaviour in the pressure-induced high-$T_c$ phase of an iron-chalcogenide superconductor
• Nematic order driven by superconducting correlations
• Strong electron-phonon coupling in Ba${}_{1-x}$Sr${}_x$Ni${}_2$As${}_2$
• Lifting of gap nodes by disorder in ultranodal superconductor candidate FeSe1-xSx
• Elastoresistivity of heavily hole doped 122 iron pnictides superconductors
• Interplay between Multipolar Order and Multipole-Induced Superconductivity in PrTi${}_2$Al${}_{20}$
• Microscopic origin of the nemato-elastic coupling and dynamics of hybridized collective nematic-phonon excitations
• Effects of strain-tunable valleys on charge transport in bismuth
• Domain Control by Adjusting Anisotropic Stress in Pyrochlore Oxide Cd2Re2O7
• Absence of nematic instability in LiFeAs
• Superconductivity near a nematoelastic quantum critical point
• Intrinsic pinning of FeSe${}_1$${}_{-}$${}_x$S${}_x$ single crystals probed by torque magnetometry
• Elasto-Raman scattering: arsenic optical phonon as a probe of nematicity in BaFe${}_2$As${}_2$
• Disordered non-Fermi liquid fixed point for two-dimensional metals at Ising-nematic quantum critical points
• Development of microwave surface elastoresistivity measurement technique under tunable strain
• Introduction to High-Temperature Superconductivity for Solid State Chemists
• Increase of critical current density in FeSe superconductor by strain effect
• Superconductivity of 30.4 K and its Reemergence under Pressure in Fe1.11Se Synthesized via Ion-exchange and De-intercalation Reaction
• Strong correlation between $H$-linear magnetoresistance and strange metal in FeSe superconductor
• Dynamics of orbital degrees of freedom probed via isotope ${}^{121,123}$ Sb nuclear quadrupole moments in Sb-substituted iron-pnictide superconductors
• Edwards-Anderson parameter and local Ising-nematicity in FeSe revealed via NMR spectral broadening
• Electronic phase diagram of iron chalcogenide superconductors FeSe1-xSx and FeSe1-yTey
• Growth and Characterization of Fe0.95Se0.6Te0.4 Single Crystal
• Topological Semimetal KAlGe with Novel Electronic Instability
• Piezostrain-induced in-plane anisotropy of superconducting transition temperature for FeSe0.5Te0.5 thin films
• Quasiparticle interaction originating from Bogoliubov Fermi Surfaces under pressure in 18%-S substituted FeSe studied via NMR
• Nematicity in LaFeAsO single crystals studied by elastoresistance, high-resolution thermal expansion and shear-modulus measurements
• Evolution from three-dimensional charge density wave to one-dimensional stripe order in CsV${}_{3-x}$Ti${}_x$Sb${}_5$
• Superconductivity near an Ising nematic quantum critical point in two dimensions
• Fragile pressure-induced magnetism in FeSe superconductors with a thickness reduction