Continuous canonical transformation for the double exchange model
نویسندگان
چکیده
منابع مشابه
Continuous canonical transformation for the double exchange model
The method of continuous canonical transformation is applied to the double exchange model with a purpose to eliminate the interaction term responsible for non conservation of magnon number. Set of differential equations for the effective Hamiltonian parameters is derived. Within the lowest order (approximate) solution we reproduce results of the standard (single step) canonical transformation. ...
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Continuum Double Exchange Model
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15 صفحه اولGround State of the Double Exchange Model
We investigate the electronic correlation effect on the ground-state properties of the double exchange model for manganites by using a semiclassical approach and the slave-boson technique. It is shown that magnetic field has a similar effect on the canted angle between manganese spins as doping concentration does, and the canted angle exhibits weak dependence on the Coulomb interaction. The pos...
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ژورنال
عنوان ژورنال: The European Physical Journal B
سال: 2001
ISSN: 1434-6028
DOI: 10.1007/s100510170081