TY - JOUR
T1 - Ground-state phase diagram of S = 2 quantum spin chain with the XXZ and on-site anisotropies
AU - Okamoto, Kiyomi
AU - Tonegawa, Takashi
AU - Nakano, Hiroki
AU - Sakai, Tôru
AU - Nomura, Kiyohide
AU - Kaburagi, Makoto
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2011
Y1 - 2011
N2 - By use of mainly numerical methods, we investigate the ground-state phase diagram of an S = 2 quantum spin chain with the XXZ and on-site anisotropies described by H = Σj(SjxS j+1x + SyjSy j+1 + ΔSzjSzj+1 + D Σj(Szj)2, where Δ denotes the XXZ anisotropy parameter of the nearest-neighbor interactions and D the on-site anisotropy parameter. In the phase diagram with Δ > 0 and D > 0 there appear the XY phase, the Haldane/large-D (LD) phase, the intermediate-D (ID) phase, and the Néel phase. Among them the ID phase was proposed by Oshikawa in 1992 and has been considered to be absent since the DMRG studies in the latter half of 1990's. And also, the Haldane state and the LD state belong to the same phase, which should be named Haldane/LD phase.
AB - By use of mainly numerical methods, we investigate the ground-state phase diagram of an S = 2 quantum spin chain with the XXZ and on-site anisotropies described by H = Σj(SjxS j+1x + SyjSy j+1 + ΔSzjSzj+1 + D Σj(Szj)2, where Δ denotes the XXZ anisotropy parameter of the nearest-neighbor interactions and D the on-site anisotropy parameter. In the phase diagram with Δ > 0 and D > 0 there appear the XY phase, the Haldane/large-D (LD) phase, the intermediate-D (ID) phase, and the Néel phase. Among them the ID phase was proposed by Oshikawa in 1992 and has been considered to be absent since the DMRG studies in the latter half of 1990's. And also, the Haldane state and the LD state belong to the same phase, which should be named Haldane/LD phase.
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U2 - 10.1088/1742-6596/302/1/012014
DO - 10.1088/1742-6596/302/1/012014
M3 - Article
AN - SCOPUS:80051702020
VL - 302
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012014
ER -