Metamagnetic phase transition in the Ising plus Dzyaloshinskii-Moriya model

Details Metamagnetic phase transition in the Ising plus Dzyaloshinskii-Moriya model Metamagnetic phase transition in the Ising plus Dzyaloshinskii-Moriya model

2009-06-18

arxiv.org/abs/0906.3443v1

Journal of Superconductivity and Novel Magnetism, 23, 1369 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 6 figures

Scientific paper

10.1007/s10948-010-0785-x

We study the 1D ferromagnetic Ising (spin-1/2) model with the Dzyaloshinskii-Moriya (DM) interaction. We analyze the low energy excitation spectrum and the ground state magnetic phase diagram using the Lanczos method. The DM interaction-dependency is calculated for the low-energy excitation spectrum, spiral order parameter and spin-spin correlation functions. We show that a metamagnetic quantum phase transition occurs between the ferromagnetic and spiral phases. The existence of the metamagnetic phase transition is confirmed, using the variational matrix product states approach.

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