Orbital and spin ordering physics of the Mn3O4 spinel
نویسندگان
چکیده
منابع مشابه
Magnetic and orbital ordering in the spinel MnV2O4.
Neutron inelastic scattering and diffraction techniques have been used to study the MnV2O4 spinel system. Our measurements show the existence of two transitions to long-range ordered ferrimagnetic states, the first collinear and the second noncollinear. The lower temperature transition, characterized by development of antiferromagnetic components in the basal plane, is accompanied by a tetragon...
متن کاملSpin–Orbital Physics in Transition Metal Oxides
We present the main features of the spin-orbital superexchange which describes the magnetic and optical properties of Mott insulators with orbital degrees of freedom. In contrast to the SU(2) symmetry of spin superexchange, the orbital part of the superexchange obeys the lower cubic symmetry of the lattice and is intrinsically frustrated. This intrinsic frustration and spin-orbital entanglement...
متن کاملMagnetodielectric coupling in Mn3O4
We have investigated the dielectric anomalies associated with spin-ordering transitions in the tetragonal spinel Mn3O4 using thermodynamic, magnetic, and dielectric measurements. We find that two of the three magnetic ordering transitions in Mn3O4 lead to decreases in the temperature-dependent dielectric constant at zero applied field. Applying a magnetic field to the polycrystalline sample lea...
متن کاملUniversality in one-dimensional orbital wave ordering in spinel and related compounds: an experimental perspective
Recent state-of-the-art crystallographic investigations of transition metal spinel compounds have revealed that the d-orbital charge carriers undergo ordering transitions with the formation of local ‘molecular bonding’ units such as dimers in MgTi2O4, octomers in CuIr2S4, and heptamers in AlV2O4. Herein, we provide a unifying scheme involving one-dimensional (1D) orbital wave (OW) ordering appl...
متن کاملOrbital and spin physics in LiNiO2 and NaNiO2
We derive a spin-orbital Hamiltonian for a triangular lattice of eg orbital degenerate (Ni) transition metal ions interacting via 90 superexchange involving (O) anions, taking into account the on-site Coulomb interactions on both the anions and the transition metal ions. The derived interactions in the spin-orbital model are strongly frustrated, with the strongest orbital interactions selecting...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2017
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.96.075139