Spin-Lattice Coupling in an Ising Chain with Nearest Neighbour and Next Nearest Neighbour Exchange Interactions

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概要

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• A one-dimensional [sing chain in which nearest neighbour (n.n.) and nextnearest neighbour (n.n.n.) exchange interactions depend Iinearly on the distancebetween the spins is considered. The magnetic field and temperature dependenceof the chain length is exactly calculated by use of a transfer matrix. It is shown thatthe chain length changes variously because of the competition among the n.n. andn.n.n. exchange interactions and the magnetic field. The zero-temperature phasediagram is also determined, which is composed of four spin states T, j J, T T J andTTLJ (the smallest units of rer>etitions are shown). Dimerization and trimeriza-tion of the lattice are found in the j j J J and j j J states respectively.

• 社団法人日本物理学会の論文
• 1984-04-15

著者

• Ishimura Norikazu

  Department Of Applied Physics Faculty Of Engineering Gumma University

• Ishimura Norikazu

  Department of Applied Physics,Faculty of Engineering,Gumma University

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