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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.44 [2006] >
IJPAP Vol.44(09) [September 2006] >
| Title: | Role of inter-site hybrid interactions in itinerant ferromagnetism |
| Authors: | Dua, Piyush
Panwar, Sunil
Singh, Ishwar |
| Keywords: | Hybrid interactions
Itinerant ferromagnetism
Transition metals
Ferromagnetic state
Optical conductivity
Magnetoresistance
Hubbard Hamiltonian |
| Issue Date: | Sep-2006 |
| Publisher: | CSIR |
| IPC Code: | G01R, H01F |
| Abstract: | The role of inter-site hybrid interactions in deciding ferromagnetic
state in the itinerant electron (narrow band) systems like some of the
transition metals has been studied. We have considered Hubbard like tight
binding model alongwith exchange and hybrid interactions. All interactions have
been treated within mean-field approximation. It is found that hybrid
interactions play significant role at zero as well as finite temperatures in
deciding on-set of ferromagnetic state. The variation of effective mass of up
and down spin electrons in ferromagnetic state as a function of temperature has
been studied. The magnetic susceptibility, optical conductivity and magnetoresistance
as a function of temperature have also been studied. |
| Page(s): | 677-684 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.44(09) [September 2006]
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