Slater Transition in the Pyrochlore Cd2Os2O7
نویسندگان
چکیده
منابع مشابه
Searching for the Slater transition in the pyrochlore Cd2Os2O7 with infrared spectroscopy
Infrared reflectance measurements were made on the single crystal pyrochlore Cd2Os2O7 in order to examine the transformations of the electronic structure and crystal lattice across the boundary of the metal-insulator transition ~MIT! at TMIT5226 K. All predicted IR active phonons are observed in the conductivity over all temperatures and the oscillator strength is found to be temperature indepe...
متن کاملPhase transition and magnetic structure of pyrochlore oxide Cd2Os2O7
The 5d transition metal oxide Cd2Os2O7 having a pyrochlore lattice of Os atoms exhibits a metal-insulator transition with a magnetic ordering at 227 K, but the magnetic structure in the ordered state and the origin of the transition have not yet been specified. The commensurate magnetic reflection with the propagation vector k = (0, 0, 0) was first observed in the resonant X-ray scattering usin...
متن کامل2 4 O ct 2 00 0 Slater Transition in the Pyrochlore Cd
Cd2Os2O7 crystallizes in the pyrochlore structure and undergoes a metal-insulator transition (MIT) near 226 K. We have characterized the MIT in Cd2Os2O7 using X-ray diffraction, resis-tivity at ambient and high pressure, specific heat, magnetization, thermopower, Hall coefficient, and thermal conductivity. Both single crystals and polycrystalline material were examined. The MIT is accompanied b...
متن کاملSpin-orbit-driven magnetic structure and excitation in the 5d pyrochlore Cd2Os2O7
Much consideration has been given to the role of spin-orbit coupling (SOC) in 5d oxides, particularly on the formation of novel electronic states and manifested metal-insulator transitions (MITs). SOC plays a dominant role in 5d(5) iridates (Ir(4+)), undergoing MITs both concurrent (pyrochlores) and separated (perovskites) from the onset of magnetic order. However, the role of SOC for other 5d ...
متن کاملOrbital phase transition in 2-d pyrochlore
We present here correlation driven orbital Mott transition in 2 dimensional pyrochlore lattice. We study a model Hamiltonian in which we take Hund’s coupling between itinerant and localized electrons apart from the coulomb interaction. In the weak coupling limit, we calculate zero temperature susceptibility under random phase approximation and find the model in para orbital phase. In strong cou...
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: MRS Proceedings
سال: 2000
ISSN: 0272-9172,1946-4274
DOI: 10.1557/proc-658-gg4.4