3 papers
cond-mat.dis-nn2005
Ferromagnetism of GaMnAs and Weiss theory of Curie temperature in the coherent potential approximation
Sze-Shiang Feng, Mogus Mochena
The zinc-blende GaAs-based III-V diluted magnetic semiconductors (DMS)are studied in the coherent potential approximation(CPA). In this work, we use the exact Hilbert transformatio…
cond-mat.mtrl-sci2005
Ground-state properties and molecular theory of Curie temperature in the coherent potential approximation of diluted magnetic semiconductors
Sze-Shiang Feng, Mogus Mochena
Using spin-1/2 description of valence holes and Kondo coupling between local spins and carriers, GaAs-based III-V diluted magnetic semiconductors (DMS)are studied in the coherent p…
cond-mat.str-el2005
Spin-wave softening and Hund's coupling in ferromagnetic manganites
Sze-Shiang Feng, Mogus Mochena
Using one-orbital model of hole-doped manganites, we show with the help of Holstein-Primakov transformation that finite Hund's coupling is responsible for the spin-wave softening i…