Ground-State Magnetization in Disordered Systems: Exchange versus Off-Diagonal Interaction Fluctuations
نویسندگان
چکیده
منابع مشابه
0 Ground - State Magnetization in Disordered Systems : Exchange vs . Off - Diagonal Interaction Fluctuations
In a Hartree-Fock picture, itinerant ferromagnetism results from a competition between kinetic and exchange energy, with the magnetized state being favored at large interaction strength. In a recent paper [1] we showed that in contrast to this average effect, fluctuations of off-diagonal interaction matrix elements systematically reduce the ground-state magnetization. When the interaction domin...
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ژورنال
عنوان ژورنال: physica status solidi (b)
سال: 2000
ISSN: 0370-1972,1521-3951
DOI: 10.1002/(sici)1521-3951(200003)218:1<113::aid-pssb113>3.3.co;2-a