Excitation in Antiferromagnetic Quantum Spin Systems on the Triangular Lattice

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概要

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• Without assuming the classical ground state with a symmetry breaking, we derivedspin wave excitation in the antiferromagnetic quantum spin systems on the triangularlattice. The motion of .z-component spin is investigated to second order in the timederivative within the effective-field approximation. The spectrum of excitation iscalculated by the use of Miyashita's trial function. The obtained spin wave excitationhas a phonon-like spectrum, which is similar to the spin-wave one based upon theclassical ground state, although its velocity is modified.

• 社団法人日本物理学会の論文
• 1987-10-15

著者

• Aoki Tosizumi

  Department Of Applied Physics Faculty Of Engineering Nagoya University

関連論文

• Collective Modes in Quantum Lattice or Three-Dimensional XY Model. II
• Dynamical Properties of the Three-Dimensional XY Model at Low Temperatures
• Excitation in Antiferromagnetic Quantum Spin Systems on the Triangular Lattice

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