Half-metallic ferromagnetism in Sr${}_3$Ru${}_2$O${}_7$

Abstract

The bilayered member of the Ruddesden-Popper family of ruthenates, Sr${}_3$Ru${}_2$O${}_7$, has received an increasing attention due to its interesting properties and phases. By using first principle calculations we find that the ground-state is characterized by a ferromagnetic (FM) half-metallic state. This state strongly competes with an antiferromagnetic metallic phase, which indicates the possible presence of a particular state characterized by the existence of different magnetic domains. To drive the system towards a phase transition we studied the electronic and magnetic properties as a function of RuO${}_6$ octahedra rotations and found that the magnetic phase does not couple with the rotation angle. Our results provide accurate electronic, structure, and magnetic ground-state properties of Sr${}_3$Ru${}_2$O${}_7$ and stimulate the investigation of other type of octahedra rotations and distortions in the search of phase transitions.

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Cited by in corpus (5)

• Competing magnetic orders in quantum critical Sr${}_3$Ru${}_2$O${}_7$
• Electronic Structure and Magnetism of the Triple-layered Ruthenate Sr${}_4$Ru${}_3$O${}_{10}$
• Ferromagnetic state with large magnetic moments realized in epitaxially strained Sr3Ru2O7 films
• Layer-dependent spin-resolved electronic structure of ferromagnetic triple-layered ruthenate Sr${}_4$Ru${}_3$O${}_{10}$
• Nonlinear Pauli Susceptibilities in Sr${}_3$Ru${}_2$O${}_7$ and Universal Features of Itinerant Metamagnetism