Origin of Magnetism and trend in $T_c$ in Cr-based double perovskites: Interplay of two driving mechanisms

Abstract

Employing first principles density functional calculations, together with solution of the low-energy, model Hamiltonian constructed in a first principles manner, we explored the origin of magnetism and $T_c$ trend in Cr-based double perovskite series, Sr${}_2$CrB${}^{\prime }$O${}_6$ (B${}^{\prime }$=W/Re/Os). Our study shows that the apparently puzzling $T_c$ trend in Sr${}_2$CrB${}^{\prime }$O${}_6$ (B${}^{\prime }$=W/Re/Os) series can be understood in terms of the interplay of the hybridization driven mechanism and the super-exchange mechanism.

to be appeared in Phys. Rev. B

References in corpus (4)

• Magnetic and electric properties of double-perovskites and estimation of their Curie temperatures by ab initio calculations
• Half Semimetallic Antiferromagnetism in the Sr${}_2$CrTO${}_6$ System, T=Os, Ru
• Magnetism in Re-based ferrimagnetic double perovskites
• Mean field theory for double-perovskites

Cited by in corpus (18)

• Lattice Instability and Competing Spin Structures in the Double Perovskite Insulator Sr2FeOsO6
• Theory of High T${}_c$ Ferrimagnetism in a Multi-orbital Mott Insulator
• Magnetism and spin-orbit coupling in Ir-based double perovskites La${}_{(}2-x$Sr${}_x$CoIrO${}_6$
• Effect of Chemical Pressure on High Temperature Ferrimagnetic Double Perovskites Sr2CrOsO6 and Ca2CrOsO6
• Spin-orbit coupling controlled ground state in Sr${}_2$ScOsO${}_6$
• Understanding the Magnetic Puzzles of Double Perovskites A2FeOsO6 (A=Ca, Sr)
• Active role of the nonmagnetic cations in magnetic interactions for the double-perovskite Sr2BOsO6 (B=Y, In, Sc)
• Magnetism in Sr${}_2$CrMoO${}_6$: A combined abinitio and model study
• Signature of an antiferromagnetic metallic ground state in heavily electron doped Sr2FeMoO6
• Calculated g-factors of 5d double perovskites Ba2NaOsO6 and Ba2YOsO6
• Theory of metallic double perovskites with spin orbit coupling and strong correlations; application to ferrimagnetic Ba2FeReO6
• Understanding ferromagnetism in Cr-based 3d-5d double perovskites
• Phase driven magnetic and optoelectronic properties ofLa2CrNiO6: A DFT and Monte Carlo perspective
• Controlled confinement of half-metallic two-dimensional electron gas in BaTiO3/Ba2FeReO6/BaTiO3 heterostructures: A first-principles study
• Nature of the Magnetic Interactions in Sr${}_3$NiIrO${}_6$
• Effects of Strain and Buffer Layer on Interfacial Magnetization in Sr${}_2$CrReO${}_6$ Films Determined by Polarized Neutron Reflectometry
• Understanding the Curious Magnetic State of Sr${}_3$OsO${}_6$
• Structural disorder and antiferromagnetism in LaNi1-xPtxO3