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citation_title: Ground-state phases of rung-alternated spin-1/2 Heisenberg ladder
twitter:title: Ground-state phases of rung-alternated spin-1/2 Heisenberg ladder
og:site_name: arXiv.org
og:title: Ground-state phases of rung-alternated spin-1/2 Heisenberg ladder
citation_author: Amiri, F.
citation_date: 2015/09/14
title: [1509.04062] Ground-state phases of rung-alternated spin-1/2 Heisenberg ladder
og:description: The ground-state phase diagram of Heisenberg spin-1/2 system on a two-leg ladder with rung alternation is studied by combining analytical approaches with numerical simulations. For the case of ferromagnetic leg exchanges a unique ferrimagnetic ground state emerges, whereas for the case of antiferromagnetic leg exchanges several different ground states are stabilized depending on the ratio between exchanges along legs and rungs. For the more general case of a honeycomb-ladder model for the case of ferromagnetic leg exchanges besides usual rung-singlet and saturated ferromagnetic states we obtain a ferrimagnetic Luttinger liquid phase with both linear and quadratic low energy dispersions and ground state magnetization continuously changing with system parameters. For the case of antiferromagnetic exchanges along legs, different dimerized states including states with additional topological order are suggested to be realized.
citation_arxiv_id: 1509.04062
citation_online_date: 2015/09/14
twitter:site: @arxiv
dc:title: [1509.04062] Ground-state phases of rung-alternated spin-1/2 Heisenberg ladder
citation_doi: 10.1103/PhysRevB.92.184421
twitter:description: The ground-state phase diagram of Heisenberg spin-1/2 system on a two-leg ladder with rung alternation is studied by combining analytical approaches with numerical simulations. For the case of...
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citation_pdf_url: https://arxiv.org/pdf/1509.04062
og:url: https://arxiv.org/abs/1509.04062v1
Content-Language: en
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