Dynamic competition between spin density wave order and superconductivity in underdoped $B{a}_{1-x}{K}_{x}F{e}_{2}A{s}_2$

Abstract

An intriguing aspect of unconventional superconductivity is that it always appears in the vicinity of other competing phases, whose suppression brings the full emergence of superconductivity. In the iron-pnictides, these competing phases are marked by a tetragonal-to-orthorhombic structural transition and a collinear spin-density-wave (SDW) transition. There has been macroscopic evidence for competition between these phases and superconductivity as the magnitude of both the orthorhombicity and magnetic moment are suppressed in the superconducting state. Here, using angle-resolved photoemission spectroscopy on detwinned underdoped $B{a}_{1-x}{K}_{x}F{e}_{2}A{s}_2$, we observe a coexistence of both the SDW gap and superconducting gap in the same electronic structure. Furthermore, our data reveal that following the onset of superconductivity, the SDW gap decreases in magnitude and shifts in a direction consistent with a reduction of the orbital anisotropy. This observation provides direct spectroscopic evidence for the dynamic competition between superconductivity and both SDW and electronic nematic orders in these materials.

References in corpus (35)

• Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2
• Magnetic Order versus superconductivity in the Iron-based layered La(O1-xFx)FeAs systems
• Superconductivity in Iron Compounds
• Long-range incommensurate charge fluctuations in (Y,Nd)Ba2Cu3O(6+x)
• Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3Oy
• Evidence for an electron nematic phase transition in underdoped iron pnictide superconductors
• Magnetic order in BaFe2As2, the parent compound of the FeAs based superconductors in a new structural family
• Structural and magnetic phase diagram of CeFeAsO1-xFx and its relationship to high-temperature superconductivity
• Effects of Co substitution on thermodynamic and transport properties and anisotropic $H_{c2}$ in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ single crystals
• Magnetism and its microscopic origin in iron-based high-temperature superconductors
• Symmetry breaking orbital anisotropy on detwinned Ba(Fe1-xCox)2As2 above the spin density wave transition
• Determination of the phase diagram of the electron doped superconductor Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Nematic and meta-nematic transitions in the iron pnictides
• Anomalous suppression of the orthorhombic distortion in superconducting Ba[Fe(1-x)Cox]2As2
• Spin-orbital frustrations and anomalous metallic state in iron-pnictide superconductors
• Phenomenology of Photoemission Lineshapes of High Tc Superconductors
• Uniaxial strain detwinning of CaFe2As2 and BaFe2As2: optical and transport study
• Direct evidence for a competition between the pseudogap and high temperature superconductivity in the cuprates
• Phase competition in trisected superconducting dome
• Competing order and nature of the pairing state in the iron pnictides
• Spin fluctuations and superconductivity in a 3D tight-binding model for BaFe2As2
• Electronic Raman scattering in superconductors as a probe of anisotropic electron pairing
• Control via electron count of the competition between magnetism and superconductivity in cobalt and nickel doped NaFeAs
• Sign-reversal of the in-plane resistivity anisotropy in iron pnictides
• Sign-reversal of the in-plane resistivity anisotropy in hole-doped iron pnictides
• Microscopic co-existence of superconductivity and magnetism in Ba1-xKxFe2As2
• Electronic reconstruction through the structural and magnetic transitions in detwinned NaFeAs
• Magnetoelastic Coupling in the Phase Diagram of Ba1-xKxFe2As2
• Transport properties and asymmetric scattering in Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ single crystals compared to the electron doped counterparts Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$}
• Orbital-weight redistribution triggered by spin order in the pnictides
• Finite temperature spin-dynamics and phase transitions in spin-orbital models
• Microscopic coexistence of antiferromagnetic order and superconductivity in Ba${}_{0.77}$K${}_{0.23}$Fe${}_2$As${}_2$
• Magneto-elastically coupled structural, magnetic and superconducting order parameters in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• A crossover in phase diagram of NaFe${}_{1-x}$Co${}_x$As determined by electronic transport measurements
• Tunneling spectroscopy for probing orbital anisotropy in iron pnictides

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• Bandwidth and Electron Correlation-Tuned Superconductivity in Rb${}_{0.8}$Fe${}_2$(Se${}_{1-z}$S${}_z$)${}_2$
• Ultrafast dynamics in the presence of antiferromagnetic correlations in electron-doped cuprate La${}_{2-x}$Ce${}_x$CuO${}_{4\pm \delta }$
• Short-range nematic fluctuations in Sr1-xNaxFe2As2 superconductors
• Spectroscopic Evidence of Low Energy Gaps Persisting Towards 120 Kelvin in Surface-Doped p-Terphenyl Crystals
• Induced spin-triplet pairing in the coexistence state of antiferromagnetism and singlet superconductivity: collective modes and microscopic properties
• Spectral Evidence for Emergent Order in Ba${}_{1-x}$Na${}_x$Fe${}_2$As${}_2$
• Muon spin rotation and infrared spectroscopy study of $B{a}_{1-x}N{a}_{x}F{e}_{2}A{s}_2$
• Driving force of the orbital-relevant electronic nematicity in Fe-based superconductors
• The electronic structures, magnetic transition and Fermi surface instability of room-temperature altermagnet KV${}_2$Se${}_2$O
• Infrared probe of the gap evolution across the phase diagram of Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$
• Formation of spin and charge ordering in the extended Hubbard model during a finite-time quantum quench
• Incoherent electronic band states in Mn-substituted BaFe${}_2$As${}_2$
• Nematic fluctuations in the non-superconducting iron pnictide BaFe${}_{1.9-x}$Ni${}_{0.1}$Cr${}_x$As${}_2$
• Influence of orbital nematic order on spin responses in Fe-based superconductors
• Internal static electric and magnetic field at the copper cite in a single crystal of the electron-doped high-T${}_c$ superconductor Pr${}_{1.85}$Ce${}_{0.15}$CuO${}_{4-y}$
• Ultrafast Relaxation Dynamics of Spin-Density Wave Order in BaFe${}_2$As${}_2$ under High Pressures
• Trion formation and unconventional superconductivity in a three-dimensional model with short-range attraction
• Transient gap generation in BaFe${}_2$As${}_2$ driven by coherent lattice vibrations
• Magneto-orbital coupling in iron pnictides
• Microscopic Description of Unconventional Nodal Superconductivity in FeSe