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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 CodeG01R, 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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