@article{oai:sucra.repo.nii.ac.jp:00012601, author = {飛田, 和男}, issue = {10}, journal = {Physical review. B}, month = {}, note = {One-dimensional S=1 XXZ chains with uniaxial single-ion-type anisotropy are studied by numerical exactdiagonalization of nite-size systems. The numerical data are analyzed using conformal eld theory, the level spectroscopy, phenomenological renormalization-group, and nite-size scaling method. We thus present a quantitatively reliable ground-state phase diagram of this model. The ground states of this model contain the Haldane phase, large-Dphase, Ne el phase, twoXYphases, and the ferromagnetic phase. There are fourdifferent types of transitions between these phases: the Brezinskii-Kosterlitz-Thouless-type transitions, the Gaussian-type transitions, the Ising-type transitions, and the rst-order transitions. The locations of these critical lines are accurately determined., Copyright notice. c2003 American Physical Society. All rights reserved. Publisher's version: http://prola.aps.org/abstract/PRB/v67/i10/e104401, text, application/pdf}, title = {Ground-state phase diagram of S=1 XXZ chains with uniaxial single-ion-type anisotropy}, volume = {67}, year = {2003}, yomi = {ヒダ, カズオ} }