We have made predictions of the energies of optical absorption and emission of transition metals in MgO and CaO. The calculations are for those transitions in which substitutional Mn, Fe, Co or Ni ions change their charge state. Whilst agreement with experiment is good in some cases, it is ...
In a MIS (Metal/Insulator/Semiconductor) structure consisting of two terminals, a systematic analysis of the electrical charge transport mechanism through an insulator is essential for advanced electronic application devices such as next-generation memories based on resistance differences. Herein, we have...
For example, the p-like term in the charge density of a transition-metal site is primarily tail-like, that is not intrinsic to the site. Thus "p bonding" is not substantial, however, the changes in the small amount of on-site p charge on going from an elemental metal to a compound,...
It is demonstrated that a cellular model gives an excellent account of the heat of formation of binary alloys of 27 transition metals. The energy effects are described by two terms, the first representing the difference in electronegativity between the two types of atoms in an alloy and the sec...
Nanoscale self-organization of electrons is ubiquitously observed in correlated electron systems such as complex oxides of transition metals. The phenomenon of charge ordering (CO) or the formation of charge stripes, as observed for layered-structure cuprates and nickelates, is one such example. Amo...
The oxidation state of a transition metal in a crystal lattice is conventionally viewed as reflecting physical ionization: electrons have been transferred to or from the atom, leaving a point-like charged entity (ion). Such a picture is still sometimes i
Determination of the effective nuclear charge for free ions of transition metals from experimental spectra The refined set of values of the effective nuclear charge ($\\bar Z_{ef} $\\bar Z_{ef} ) and the set of one-electron spin-orbital constants (ξ3d R.,Yu.,Babkin,... - 《Optics...
STRUCTURAL AND ELECTRONIC ORIGIN OF THE HIDDEN NESTING AND CHARGE DENSITY WAVES IN TRANSITION METAL OXIDES AND BRONZES By employing the concept of hidden nesting, we examined why charge density wave (CDW) instabilities occur in the two-dimensional (2D) metals, purple bronze... CANADELL, ENRIC,WH...
We investigate the dispersion of the charge carrier plasmon in the three prototypical charge-density wave bearing transition-metal dichalcogenides 2H-TaSe(2), 2H-TaS(2), and 2H-NbSe(2) employing electron energy-loss spectroscopy. For all three compounds the plasmon dispersion is found to be neg...
We have made measurements of the proton spin-lattice relaxation in the low-temperature antiferromagnetic ground state of (TMTTF)2Br at different pressures. At ambient pressure, the relaxation rate 1/T_1 is peaked at the transition temper... BJ Klemme,SE Brown,P Wzietek,... - 《Journal De...