Stripe segregation and magnetic coupling in the nickelate La_5/3 Sr_1/3 NiO_4

Abstract

We investigate the consequences of the stripe formation in the nickelate La5/3Sr1/3NiO4 for the details of its crystal structure and electronic states. Our data are based on numerical simulations within density functional theory (DFT) and the generalized gradient approximation (GGA). The on-site Coulomb interaction is included in terms of the LDA+U scheme. Structure optimization of preliminary experimental data indicates a strong interaction between the structural and electronic degrees of freedom. In particular, we find a segregation of the diagonal filled stripes induced by a delicate interplay with the magnetic coupling. Beyond the cooperative effect of stripe segregation and spin order, distinct octahedral distortions are essential for the formation of an insulating state.

7 pages, 6 figures, accepted by Annalen der Physik (Berlin)

References in corpus (11)

• Properties of charge density waves in La${}_{2-x}$Ba${}_x$CuO${}_4$
• Surface Effects on Oxide Heterostructures
• Slave-boson approach to the metallic stripe phases with large unit cells
• Unidirectional Diagonal Order and 3D Stacking of Charge Stripes in Orthorhombic Pr1.67Sr0.33NiO4 and Nd1.67Sr0.33NiO4
• Microscopic origin of diagonal stripe phases in doped nickelates
• Charge and spin stripe in La${}_{2-x}$Sr${}_x$NiO${}_4$ (x=1/3,1/2)
• Magnetic ordering in the striped nickelate La5/3Sr1/3NiO4: A band structure point of view
• Magnetic ground state of coupled edge-sharing CuO_2 spin-chains
• Robust charge stripe order under high electric fields in Nd1.67Sr0.33NiO4
• Spin-rotationally symmetric domain flux phases in underdoped cuprates
• Stripe phases - possible ground state of the high-Tc superconductors

Cited by in corpus (5)

• Neutron scattering studies on stripe phases in non-cuprate materials
• Hund-Heisenberg model in superconducting infinite-layer nickelates
• Charge order, dielectric response and local structure of La5/3Sr1/3NiO4 system
• Stability of charge-stripe ordered La2-xSrxNiO4+delta at one third doping
• The Temperature Evolution of the Out-of-Plane Correlation Lengths of Charge-Stripe Ordered La(1.725)Sr(0.275)NiO(4)