Ising Like Order by Disorder In The Pyrochlore Antiferromagnet with Dzyaloshinskii-Moriya Interactions
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منابع مشابه
A kagome map of spin liquids from XXZ to Dzyaloshinskii–Moriya ferromagnet
Despite its deceptive simplicity, few concepts have more fundamental implications than chirality, from the therapeutic activity of drugs to the fundamental forces of nature. In magnetic materials, chirality gives rise to unconventional phenomena such as the anomalous Hall effect and multiferroicity, taking an enhanced flavour in the so-called spin-liquid phases where magnetic disorder prevails....
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– The Ising-like spin ice model, with a macroscopically degenerate ground state, has been shown to be approximated by several real materials. Here we investigate a model related to spin ice, in which the Ising spins are replaced by classical Heisenberg spins. These populate a cubic pyrochlore lattice and are coupled to nearest neighbours by a ferromagnetic exchange term J and to the local 〈1, 1...
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The (three-dimensional) pyrochlore lattice antiferromagnet with Heisenberg spins of large spin length S is a highly frustrated model with a macroscopic degeneracy of classical ground states. The zero-point energy of (harmonic-order) spin-wave fluctuations distinguishes a subset of these states. I derive an approximate but illuminating effective Hamiltonian, acting within the subspace of Ising s...
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We study the quantum 2D anti-ferromagnetic Ising model with Dzyaloshinskii-Moriya (DM) interaction using position space renormalization group (PSRG). In particular, we find that there exist a quantum phase transition between the anti-ferromagnetic phase and the chiral phase, which is the phase dominated by large DM interaction, at a finite value of the DM coupling in both one and two dimensions.
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تاریخ انتشار 2017