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cond-mat.str-el2005
Magnetoconductivity of Hubbard bands induced in Silicon MOSFETs
T. Ferrus, R. George, C. H. W. Barnes +3
Sodium impurities are diffused electrically to the oxide-semiconductor interface of a silicon MOSFET to create an impurity band. At low temperature and at low electron density, the…
cond-mat.str-el2005
Activation mechanisms in sodium-doped Silicon MOSFETs
T. Ferrus, R. George, C. H. W. Barnes +3
We have studied the temperature dependence of the conductivity of a silicon MOSFET containing sodium ions in the oxide above 20 K. We find the impurity band resulting from the pres…
cond-mat.str-el2005
Evidence for multiple impurity bands in sodium-doped silicon MOSFETs
T. Ferrus, R. George, C. H. W. Barnes +3
We report measurements of the temperature-dependent conductivity in a silicon metal-oxide-semiconductor field-effect transistor that contains sodium impurities in the oxide layer.…