Charge Segregation, Cluster Spin-Glass and Superconductivity in La1.94Sr0.06CuO4

  title={Charge Segregation, Cluster Spin-Glass and Superconductivity in La1.94Sr0.06CuO4},
  author={Marc-Henri Julien and Ferdinando Borsa and Pietro Carretta and M. Horvati{\'c} and Claude Berthier and C. Lin},
  journal={Physical Review Letters},
A {sup 63}Cu and {sup 139}La NMR/NQR study of superconducting (T{sub c}=8 K) La{sub 1.94} Sr{sub 0.06} CuO{sub 4} single crystal is reported. Coexistence of spin-glass and superconducting phases is found below {approximately}5 K from {sup 139}La NMR relaxation. {sup 63}Cu and {sup 139}La NMR spectra show that, upon cooling, CuO{sub 2} planes progressively separate into two magnetic phases, one of them having enhanced antiferromagnetic correlations. These results establish the antiferromagnetic… 
Similar glassy features in the L 139 a NMR response of pure and disordered La1.88 Sr0.12 CuO4
High ${T}_{c}$ superconductivity in ${\text{La}}_{2\ensuremath{-}x}{\text{Sr}}_{x}{\text{CuO}}_{4}$ coexists with (striped and glassy) magnetic order. Here, we report NMR measurements of the
Neutron scattering study of spin ordering and stripe pinning in superconducting La$_{1.93}$Sr$_{0.07}$CuO$_4$
The relationships among charge order, spin fluctuations, and superconductivity in underdoped cuprates remain controversial. We use neutron scattering techniques to study these phenomena in
Stripe antiferromagnetism and disorder in the Mott insulator NaFe1−xCuxAs (x≲0.5)
Neutron scattering measurements have demonstrated that the heavily Cu-doped NaFe$_{1-x}$Cu$_{x}$As compound behaves like a Mott insulator exhibiting both real space Fe-Cu stripes, as well as
Large positive magnetoresistance of the lightly doped La 2 CuO 4 Mott insulator
The in-plane and out-of-plane magnetoresistance (MR) of single crystals of ${\text{La}}_{2}{\text{CuO}}_{4}$, lightly doped $(x=0.03)$ with either Sr
Spin-glass state of vortices in YBa2Cu3Oy and La2 xSrxCuO4 below the metal-to-insulator crossover
Highly disordered magnetism confined to individual weakly interacting vortices is detected by muon spin rotation in two different families of high-transition-temperature superconductors, but only in
Development of Cu-spin correlation in Bi1.74Pb 0.38Sr1.88Cu1-yZnyO 6+δ high-temperature superconductors observed by muon spin relaxation
A systematic muon-spin-relaxation study in Bi-2201 high-Tc cuprates has revealed for the first time that the Cu-spin correlation (CSC) is developed at low temperatures below 2 K in a wide range of
Non-Gaussian noise in the in-plane transport of lightly doped La2−xSrxCuO4: Evidence for a collective state of charge clusters
A study of the in-plane resistance noise on a high quality single crystal of La_{1.97}Sr_{0.03}CuO_{4} deep inside the spin-glass phase reveals the onset of non-Gaussianity and the insensitivity of
NQR study of spin-freezing in superconducting La2−xSrxCuO4: the example ofx = 0.06
Nuclear quadrupole resonance (NQR)139La and63Cu spin-lattice relaxation rateT1t-1 measurements in a La1.94Sr0.06CuO4 single crystal are described. Slowing-down of Cu2+ spin fluctuations is evidenced
A step-like increase of the acoustic absorption (Q-1) is found in La2-xSrxCuO4 (x = 0.019, 0.025, 0.032 and 0.064) below the temperature (Tg) at which NQR and μSR measurements evidenced the formation