Anisotropic spin Hamiltonians due to spin-orbit and Coulomb exchange interactions
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چکیده
منابع مشابه
Anisotropic spin Hamiltonians due to spin-orbit and Coulomb exchange interactions.
Here we correct, extend, and clarify results concerning the spin Hamiltonian HS used to describe the ground manifold of Hubbard models for magnetic insulators in the presence of spin-orbit interactions. Most of our explicit results are for a tetragonal lattice as applied to some of the copper oxide lamellar systems and are obtained within the approximation that HS consists of a sum of nearest-n...
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The origins of anisotropy in the effective spin Hamiltonian, describing the ground manifold of Hubbard models with spin-orbit interactions, are critically discussed. For tetragonal symmetry, we show exactly that spin anisotropy can arise only if one includes both spin-orbit and Coulomb exchange interactions. For lower symmetries, additional anisotropies arise from terms which were hitherto negl...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1995
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.52.10239