نتایج جستجو برای: conduction band
تعداد نتایج: 169120 فیلتر نتایج به سال:
Tunneling spectroscopy has been used to detect the photoexcitation of charge carriers in the wide band-gap semiconductors, ZnO and cubic SiC. Because the process is energy sensitive, valence-toconduction hand or defect charge transfer transitions may be selectively excited and detected with the scanning tunneling microscope. Two types of transitions were detected which change the tunneling resp...
The asymmetric infinite-dimensional periodic Anderson model is examined with a quantum Monte Carlo simulation. For small conduction band filling, we find a severe reduction in the Kondo scale, compared to the impurity value, as well as protracted spin screening consistent with some recent controversial photoemission experiments. The Kondo screening drives a ferromagnetic transition when the con...
BACKGROUND The knowledge of conduction system morphology has a vital significance in cardiology and cardiac surgery - it enables to interpret pathologies and choose treatment. This has been confirmed by numerous accounts, both in the context of e.g. atrial fibrillation ablations as well as treating septum defects. Due to diversity and changeability of conduction system structure and their clini...
Entanglement can be generated by two electrons in a spin-zero state on a semiconducting single-walled carbon nanotube. The two electrons, one weakly bound in a shallow well in the conduction band, and the other injected into the conduction band, are coupled by the Coulomb interaction. Both transmission and entanglement are dependent on the well characteristics, which can be controlled by a loca...
The scattering rates due to the interaction between conduction band electrons and polar optical phonons are calculated in a single heterostructure of the AlxGa1−xN prototype. Optical phonon modes are described via the dielectric continuum model for the case of the wurtzite crystal structure, taking into account both interface and half-space oscillations. Electronic states in the two-dimensional...
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