Orbital Ordering, New Phases, and Stripe Formation in Doped Layered Nickelates

Abstract

Ground-state properties of layered nickelates are investigated based on the orbital-degenerate Hubbard model coupled with lattice distortions, by using umerical techniques. The Néel state composed of spin S=1 ions is confirmed in the undoped limit x=0. At x=1/2, novel antiferromagnetic states, called CE- and E-type phases, are found by increasing the Hund's coupling. (3 x^2 - r^2 / 3 y^2 - r^2)-type orbital ordering is predicted to occur in a checkerboard-type charge-ordered state. At x=1/3, both Coulombic and phononic interactions are found to be important, since the former stabilizes the spin stripe, while the latter leads to the striped charge-order.

Revtex, 4 pages, 3 figures

References in corpus (1)

• Spin correlations among the charge carriers in an ordered stripe phase

Cited by in corpus (26)

• Ferroelectricity in the Magnetic E-Phase of Orthorhombic Perovskites
• Orbital ordering phenomena in $d$- and $f$-electron systems
• Spectroscopy of stripe order in La1.8Sr0.2NiO4 using resonant soft x-ray diffraction
• Quantum-Confinement-Induced Magnetism in LaNiO${}_3$-LaMnO${}_3$ Superlattices
• Matrix Product State and Quantum Phase Transitions in the One-Dimensional Extended Quantum Compass Model
• Ferro-Orbitally Ordered Stripes in Systems with Alternating Orbital Order
• 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)
• Spin Dynamics of Half-Doped La3/2Sr1/2NiO4
• Orbital-based Scenario for Magnetic Structure of Neptunium Compounds
• Evidence for a nematic phase in La${}_{1.75}$Sr${}_{0.25}$NiO${}_4$
• Charge Condensation and Lattice Coupling Drives Stripe Formation in Nickelates
• Time-Dependent Charge-Order and Spin-Order Recovery in Striped Systems
• Stripe segregation and magnetic coupling in the nickelate La_5/3 Sr_1/3 NiO_4
• Nature and impact of stripe freezing in La${}_{1.67}$Sr${}_{0.33}$NiO${}_4$
• Interplay of orbitally polarized and magnetically ordered phases in doped transition metal oxides
• Study of long-range orders of hard-core bosons coupled to cooperative normal modes in two-dimensional lattices
• Jahn-Teller mechanism of stripe formation in doped layered La${}_{2-x}$Sr${}_x$NiO${}_4$ nickelates
• Magnetic Order-Disorder Transitions on a 1/3 - Depleted Square Lattice
• Stability of charge-stripe ordered La2-xSrxNiO4+delta at one third doping
• Magnetic transitions in strong coupling expansions for nearly degenerate states
• Topological end states in two-orbital double-exchange model for colossal magnetoresistive manganites
• The Berry phase: a topological test for the spectrum structure of frustrated quantum spin systems
• Giant electron-phonon coupling of the breathing plane oxygen phonons in the dynamic stripe phase of La${}_{1.67}$Sr${}_{0.33}$NiO${}_4$
• Bad metal and negative compressibility transitions in a two-band Hubbard model
• Stripe Phases in Layered Nickelates