Spin-Peierls-like phases in magnetoelasticJ1−J2antiferromagnetic chains at1∕3magnetization

2007/08/30 by H. D. Rosales, G. L. Rossini · 1 citation
Physics and Astronomy · #Adiabatic process #Advanced Condensed Matter Physics #Antiferromagnetism #Condensed matter physics #Ground state #Phase (matter) #Phase diagram #Phonon #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Quantum, superfluid, helium dynamics #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.76.224404

published as Phys. Rev. B 76, 224404 (2007) · 7 pages, 5 figures

arxiv created 2007/08/30 · openalex publication_date 2007/12/06 · openalex created_date 2016/06/24 · arxiv updated 2019/06/04 · openalex updated_date 2026/08/05

Abstract

We investigate elastic deformations of spin S=1∕2 antiferromagnetic J₁\ensuremath-J₂ Heisenberg chains, at M=1∕3 magnetization, coupled to phonons in the adiabatic approximation. Using a bosonization approach we predict the existence of nonhomogeneous trimerized magnetoelastic phases. A rich ground state phase diagram is found, including classical and quantum plateau states for the magnetic sector as well as inequivalent lattice deformations within each magnetic phase. The analytical results are supported by exact diagonalization of small clusters.

Citations

• Quantum vs Classical Magnetization Plateaus of S=1/2 Frustrated Heisenberg Chains
• Quantum phase transitions in trimerized zigzag spin ladders
• Z3quantum criticality in a spin-12chain model
• Tetramerization of a Frustrated Spin-1/2Chain
• Nonperturbative study of the two-frequency sine-Gordon model

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• Coexisting orders in the quarter-filled Hubbard chain with elastic deformations