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  Ground state properties of a generalized spin-1/2 distorted diamond chain

Wang, H. T. (2002). Ground state properties of a generalized spin-1/2 distorted diamond chain. Journal of Physics-Condensed Matter, 14(34), 8033-8042. Retrieved from http://www.iop.org/EJ/abstract/0953-8984/14/34/322.

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 Creators:
Wang, H. T.1, Author              
Affiliations:
1Max Planck Institute for the Physics of Complex Systems, Max Planck Society, ou_2117288              

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 MPIPKS: Superconductivity and magnetism
 Abstract: With the help of the bond operator representation for three S spins, we study the effective Hamiltonian and the phase diagram of a generalized spin-1/2 distorted diamond chain. In the weak- intertriangle-coupling limit, the magnetism of the effective Hamiltonian is studied with second-order perturbation theory and mean-field decoupling. Various phases such as the spin- fluid phase, the dimerized phase and the ferrimagnetic phase are shown to compete. For larger intertriangle interactions, the spin-fluid phase and the dimerized phase can be also described by the effective spin-orbital model and the region of the dimerized phase enlarges around the symmetric point of J(1) = J(2) = J(3) (J(1), J(2) and J(3) are the intratriangle interactions). The magnetization plateaus at 1/3M(s) and 2/3M(s) in the magnetic field are also studied.

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Language(s): eng - English
 Dates: 2002-09-01
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Type: Peer
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Title: Journal of Physics-Condensed Matter
  Alternative Title : J. Phys.-Condes. Matter
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 14 (34) Sequence Number: - Start / End Page: 8033 - 8042 Identifier: ISSN: 0953-8984