A unified physically based ion implantation damage model has been developed which successfully predicts both the impurity profiles and the damage profiles for a wide range of implant conditions for arsenic, phosphorus, BF2, and boron implants into single-crystal silicon. In addition, the amorphous layer thicknesses predicted by this new damage model are also in excellent agreement with experime...

The ordinary single channel Kondo model consists of one or more spin 1/2 local moments interacting antiferromagnetically with conduction electrons in a metal. This model has provided a paradigm for understanding many phenomena of strongly correlated electronic materials, ranging from the formation of heavy fermion fermi liquids to the mapping to a one-band model in the cuprate superconductors. ...

S. Y. Savrasov,1 V. Oudovenko,2,5 K. Haule,3,5 D. Villani,4,5 and G. Kotliar5 1Department of Physics, New Jersey Institute of Technology, Newark, New Jersey 07102, USA 2Laboratory for Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia 3Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia 4JP Morgan Chase Bank, 270 Park Avenue, New York, New York 10017, USA 5Departmen...

The two-channel Anderson impurity model serves as a prototype for describing heavy-fermion materials with a possible mixed-valent regime with both quadrupolar and magnetic character. We report on the low-energy physics of the model, using a conformal field theory approach with exact Bethe Ansatz results as input.

Using Messbauer spectroscopy on 119 Sn impurity atoms, it was demonstrated that in amorphous (GeTe) x (Sb 2 Te 3 ) films (where x=0.5, 1, 2, 3) tin atoms replace of tetravalent germanium, which forms a tetrahedral system chemical bonds with its local environment. In crystalline films, replaces divalent six-coordinated germanium positions 4b the NaCl-type crystal lattice. Keywords: phase memory,...

We compare the results of measurements of the magnetic susceptibility χ(T ), the linear coefficient of specific heat γ(T ) = C(T )/T and 4f occupation number nf (T ) for the intermediate valence compounds YbXCu4 (X = Ag, Cd, In, Mg, Tl, Zn) to the predictions of the Anderson impurity model, calculated in the non-crossing approximation (NCA). The crossover from the low temperature Fermi liquid s...

Abstract Mining of “invisible gold” associated with sulfides in gold ores represents a significant proportion production worldwide. Gold hosted sulfide minerals has been proposed to be structurally bound the crystal lattice as sulfide-gold alloy and/or occur discrete metallic nanoparticles. Using combination microstructural quantification and nanoscale geochemical analyses on pyrite from an oro...