A single crystal of (Bi0.24Ca0.76)MnO3 has been extensively studied using both laboratory and synchrotron radiation x-ray scattering.
Optical spectroscopy was used to investigate the optical gap (2Delta) due to charge ordering (CO) and related pseudogap developments with x and temperature (T) in La1-xCaxMnO3 (0.48 less than or eq
We report on new experiment and theory that unambiguously resolve the recent puzzling observation of large diameter exciton emission halos around a laser excitation spot in two dimensional systems.
We report on new experiments and theory that unambiguously resolve the recent puzzling observation of large diameter exciton emission halos around a laser excitation spot in two dimensional systems
The newly discovered high T sub c oxide metals have a low enough electron density that the charge transfer excitations between the nearest neighbor cations and anions are unscreened.
The charge transfer in HfPt sub 3 is discussed on the basis of the 4f core-electron binding-energy shifts of the constituent elements.
Ta sub 2 O sub 5 has been actively investigated for more than fifty years and is an established dielectric material in discrete capacitors made from anodized, porous tantalum substrates.
The electrical leakage characteristics of anodic Ta sub 2 O sub 5 thin films (epsilon = 23 +- 2) have been studied in detail and are compared to anodic films of ZrO sub 2 (epsilon = 19 +- 2) and Hf
The charge transport in alpha-quaterthiophene and alpha-hexathiophene single crystals was studied by space charge limited current spectroscopy.
The hole transport through a single grain boundary is investigated in the temperature range from 4 to 300 K using a tetracene bicrystal. The carrier concentration is varied by the field effect.
