Quantum Heisenberg antiferromagnetic chains with exchange and single–ion anisotropies
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چکیده
Using density matrix renormalization group calculations, ground state properties of the spin–1 Heisenberg chain with exchange and quadratic single–ion anisotropies in an external field are studied, for special choices of the two kinds of anisotropies. In particular, the phase diagram includes antiferromagnetic, spin–liquid (or spin–flop), (10), and supersolid (or biconical) phases. Especially, new features of the spin–liquid and supersolid phases are discussed. Properties of the quantum chains are compared to those of corresponding classical spin chains.
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تاریخ انتشار 2009