Stripeless incommensurate magnetism in a doped strongly correlated oxide

Abstract

We studied the nano-scale structure of the short-range incommensurate magnetic order in La1.5Sr0.5CoO4 by elastic neutron scattering. We find that magnetic diffuse scattering is isotropic in the a-b plane, in contrast with the naive expectation based on the popular stripe model. Indeed, charge segregation into lines favoring certain lattice direction(s) would facilitate linear stacking faults in an otherwise robust antiferromagnetism of un-doped material, leading to anisotropic disorder, with a characteristic symmetry pattern present in the neutron scattering data.

arXiv comment8 pages, 7 color figures, amended version with significant revisions

References in corpus (12)

• Stripe order at low temperatures in La{2-x}Sr{x}NiO4 for 1/3 < x < 1/2
• Spontaneous rearrangement of the checkerboard charge order to stripe order in La1.5Sr0.5NiO4
• Structural and magnetic properties of the single-layer manganese oxide La{1-x}Sr{1+x}MnO4
• Independent freezing of charge and spin dynamics in La1.5Sr0.5CoO4
• Why stripes? Spontaneous formation of inhomogeneous structures due to elastic interactions
• Nature of $e_g$ Electron Order in La${}_{1-x}$Sr${}_{1+x}$MnO${}_4$
• Ordering Process and Its Hole Concentration Dependence of the Stripe Order in La{2-x}Sr{x}NiO{4}
• Dimensional cross-over and charge order in half-doped Manganites and Cobaltites
• Partial spin freezing in the quasi-two-dimensional La2(Cu,Li)O4
• Slow spin-glass and fast spin-liquid components in quasi-two-dimensional La2(Cu,Li)O4
• Heisenberg magnet with modulated exchange
• Universal features of charge and spin order in a half-doped layered perovskite

Cited by in corpus (15)

• Neutron scattering studies on stripe phases in non-cuprate materials
• Magnetic order and dynamics of the charge-ordered antiferromagnet La1.5Sr0.5CoO4
• Direct evidence for charge stripes in a layered cobalt oxide
• Magnetic spectrum of the two-dimensional antiferromagnet La2CoO4 studied by inelastic neutron scattering
• Incommensurate Spin Ordering and Fluctuations in underdoped La_{2-x}Ba_{x}CuO_{4}
• Evidence for a temperature-induced spin-state transition of Co3+ in La2-xSrxCoO4
• Magnetic-field control of topological electronic response near room temperature in correlated Kagome magnets
• The Magnetic Structure of Paramagnetic MnO
• Revisiting the ground state of CoAl${}_2$O${}_4$: comparison to the conventional antiferromagnet MnAl${}_2$O${}_4$
• Incommensurate spin correlations in highly oxidized cobaltates La${}_{2-x}$Sr${}_x$CoO${}_4$
• Short-range Charge and Spin Superstructures in Doped Layered Co Perovskites
• Signatures of coupling between spin waves and Dirac fermions in YbMnBi${}_2$
• Evidence for charge orbital and spin stripe order in an overdoped manganite
• The Hour-Glass Magnetic Spectrum Arising from a Striped, Cluster Spin Glass Ground State in La1.75Sr0.25CoO4
• Magnetic phase diagram of La${}_{2-x}$Sr${}_x$CoO${}_4$ revised using muon-spin relaxation