Zobrazeno 1 - 3
of 3
pro vyhledávání: '"Pruell, Alexander"'
Publikováno v:
Phys. Rev. B 67 174418 (2003)
The ferromagnetic Kondo model with classical corespins is studied via unbiased Monte-Carlo simulations. We show that with realistic parameters for the manganites and at low temperatures, the double-exchange mechanism does not lead to phase separation
Externí odkaz:
http://arxiv.org/abs/cond-mat/0301350
Publikováno v:
Phys. Rev. B 67 104432 (2003)
We study the ferromagnetic Kondo model with classical corespins via unbiased Monte-Carlo simulations and derive a simplified model for the treatment of the corespins at any temperature. Our simplified model captures the main aspects of the Kondo mode
Externí odkaz:
http://arxiv.org/abs/cond-mat/0211672
Publikováno v:
Phys. Rev. B 66, 144425 (2002)
Starting from the two-orbital Kondo-lattice model with classical t_2g spins, an effective spinless fermion model is derived for strong Hund coupling J_H with a projection technique. The model is studied by Monte Carlo simulations and analytically usi
Externí odkaz:
http://arxiv.org/abs/cond-mat/0206049