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|Title:||Role of inter-site hybrid interactions in itinerant ferromagnetism|
|Keywords:||Hybrid interactions;Itinerant ferromagnetism;Transition metals;Ferromagnetic state;Optical conductivity;Magnetoresistance;Hubbard Hamiltonian|
|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.|
|ISSN:||0975-1041 (Online); 0019-5596 (Print)|
|Appears in Collections:||IJPAP Vol.44(09) [September 2006]|
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