| Autor: |
Tôru Sakai, Takaharu Yamada, Ryosuke Nakanishi, Rito Furuchi, Hiroki Nakano, Hirono Kaneyasu, Kiyomi Okamoto, Takashi Tonegawa |
| Zdroj: |
Journal of the Physical Society of Japan; 7/15/2022, Vol. 91 Issue 7, p1-5, 5p |
| Abstrakt: |
The S = 2 quantum spin chain with the single-ion anisotropy D and the biquadratic exchange interaction JBQ is investigated using the numerical diagonalization of finite-size clusters and the level spectroscopy analysis. It is found that the intermediate-D phase corresponding to the symmetry protected topological (SPT) phase appears in a wide region of the ground state phase diagram. We also obtain the phase diagram at the half of the saturation magnetization which includes the SPT plateau phase. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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