NMR evidence for inhomogeneous glassy behavior driven by nematic fluctuations in iron arsenide superconductors

Abstract

We present ${}^{75}$As nuclear magnetic resonance spin-lattice and spin-spin relaxation rate data in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ and Ba(Fe${}_{1-x}$Cu${}_x$)${}_2$As${}_2$ as a function of temperature, doping and magnetic field. The relaxation curves exhibit a broad distribution of relaxation rates, consistent with inhomogeneous glassy behavior up to 100 K. The doping and temperature response of the width of the dynamical heterogeneity is similar to that of the nematic susceptibility measured by elastoresistance measurements. We argue that quenched random fields which couple to the nematic order give rise to a nematic glass that is reflected in the spin dynamics.

Accepted to Physical Review B

References in corpus (14)

• Theoretical perspective on the glass transition and amorphous materials
• Evidence for an electron nematic phase transition in underdoped iron pnictide superconductors
• Theory of Electron Nematic Order in LaOFeAs
• 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
• Determination of the phase diagram of the electron doped superconductor Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Ising and Spin orders in Iron-based Superconductors
• Commensurate Itinerant Antiferromagnetism in BaFe2As2: 75As-NMR Studies on a Self-Flux Grown Single Crystal
• Manifestations of nematic degrees of freedom in the magnetic, elastic, and superconducting properties of the iron pnictides
• Incommensurate spin-density wave order in electron-doped BaFe2As2 superconductors
• 59-Co and 75-As NMR Investigation of Electron-Doped High Tc Superconductor BaFe(1.8)Co(0.2)As(2) (Tc = 22K)
• Similar glassy features in the NMR response of pure and disordered La1.88Sr0.12CuO4
• Short-range cluster spin glass near optimal superconductivity in BaFe${}_{2-x}$Ni${}_x$As${}_2$
• Local Magnetic Inhomogeneities in Lightly Doped BaFe${}_2$As${}_2$
• Critical Behavior of the SDW Transition in Underdoped Ba(Fe1-xCox)2As2 (x <=0.05): 75As NMR Investigation

Cited by in corpus (22)

• Ironing out the details of unconventional superconductivity
• Uniaxial strain control of spin-polarization in multicomponent nematic order of BaFe${}_2$As${}_2$
• NMR evidence for inhomogeneous nematic fluctuations in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• ${}^{139}$La NMR investigation of the interplay between the lattice, charge, and spin dynamics in charge ordered high $T_c$ cuprate La${}_{1.875}$Ba${}_{0.125}$CuO${}_4$
• Diluted paramagnetic impurities in nonmagnetic Ba${}_2$YIrO${}_6$
• Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in BaFe${}_{2-x}{T}_x$As${}_2$ ($T=$Co, Ni)
• NMR study of nematic spin fluctuations in a detwinned single crystal of underdoped Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Inverse Laplace Transformation Analysis of Stretched Exponential Relaxation
• Iron-based superconductors: tales from the nuclei
• Anisotropic nematic fluctuations above the ferroquadrupolar transition in TmVO${}_4$
• Emergent quasicrystals in strongly correlated systems
• Effect of proton irradiation on the normal state low-energy excitations of Ba(Fe${}_{1-x}$Rh${}_x$)${}_2$As${}_2$ superconductors
• Coexistence of antiferromagnetic and ferromagnetic spin correlations in Ca(Fe1-xCox)2As2 revealed by 75As nuclear magnetic resonance
• Persistence of slow fluctuations in the overdoped regime of Ba(Fe1-xRhx)2As2 superconductors
• A unified phase diagram of F-doped LaFeAsO by means of NMR and NQR parameters
• Competing effects of Mn and Y doping on the low-energy excitations and phase diagram of La${}_{1-y}$Y${}_y$Fe${}_{1-x}$Mn${}_x$AsO${}_{0.89}$F${}_{0.11}$ iron-based superconductors
• Tuning the interplay between nematicity and spin fluctuations in Na${}_{1-x}$Li${}_x$FeAs superconductors
• Random-strain-induced correlations in materials with intertwined nematic and magnetic orders
• Mapping out the spin fluctuations in Co-doped LaFeAsO single crystals by NMR
• Edwards-Anderson parameter and local Ising-nematicity in FeSe revealed via NMR spectral broadening
• Compatible Instability: Gauge Constraints of Elasticity Inherited by Electronic Nematic Criticality
• Magnetically-induced local lattice anomalies and low-frequency nematic fluctuations in the Mott insulator La${}_2$O${}_3$Fe${}_2$Se${}_2$