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We briefly report momentum-resolved charge excitations in a cuprate antiferromagnetic insulator in the intermediate regimes of momentum transfers using high energy resonant X-ray scattering near th

Some general arguments affecting the likelihood that charge fluctuations can promote superconductivity are discussed, and a calculational framework is presented.

Although the unit of charge in nature is a fundamental constant, the charge of individual quasiparticles in some low-dimensional systems may be fractionalized.

We use interlayer tunneling to study bilayer two-dimensional electron systems at nu(T)=1 over a wide range of charge-density imbalance Delta nu=nu(1)-nu(2) between the two layers.

We describe a new type of transistor based on hot-electron transfer between two conducting layers in an AlGaAs/GaAs heterojunction structure. One of these layers is the FET channel.

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.