| Spin-ordered ground state and thermodynamic behaviors of the spin-3/2 kagome heisenberg antiferromagnet | |
| Liu, Tao1; Li, Wei2,3; Su, Gang1 | |
| 刊名 | Physical review e
 |
| 2016-09-13 | |
| 卷号 | 94期号:3页码:8 |
| ISSN号 | 2470-0045 |
| DOI | 10.1103/physreve.94.032114 |
| 通讯作者 | Li, wei(w.li@buaa.edu.cn) |
| 英文摘要 | Three different tensor network (tn) optimization algorithms are employed to accurately determine the ground state and thermodynamic properties of the spin-3/2 kagome heisenberg antiferromagnet. we found that the root 3 x root 3 state (i.e., the state with 120 degrees spin configuration within a unit cell containing 9 sites) is the ground state of this system, and such an ordered state is melted at any finite temperature, thereby clarifying the existing experimental controversies. three magnetization plateaus (m/m(s) = 1/3, 23/27, and 25/27) were obtained, where the 1/3-magnetization plateau has been observed experimentally. the absence of a zero-magnetization plateau indicates a gapless spin excitation that is further supported by the thermodynamic asymptotic behaviors of the susceptibility and specific heat. at low temperatures, the specific heat is shown to exhibit a t-2 behavior, and the susceptibility approaches a finite constant as t -> 0. our tn results of thermodynamic properties are compared with those from high-temperature series expansion. in addition, we disclose a quantum phase transition between q = 0 state (i.e., the state with 120 degrees spin configuration within a unit cell containing three sites) and root 3 x root 3 state in a spin-3/2 kagome xxz model at the critical point delta(c) = 0.54. this study provides reliable and useful information for further explorations on high-spin kagome physics. |
| WOS关键词 | MAGNETIC FRUSTRATION ; LATTICE ; FLUCTUATIONS ; EXCITATIONS ; SRCR8GA4O19 ; SYSTEMS |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Fluids & Plasmas ; Physics, Mathematical |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000383156600002 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2376181 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Li, Wei |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Phys, Theoret Condensed Matter Phys & Computat Mat Phys, POB 4588, Beijing 100049, Peoples R China 2.Beihang Univ, Minist Educ, Dept Phys, Key Lab Micronano Measurement Manipulat & Phys, Beijing 100191, Peoples R China 3.Beihang Univ, Int Res Inst Multidisciplinary Sci, Beijing 100191, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Tao,Li, Wei,Su, Gang. Spin-ordered ground state and thermodynamic behaviors of the spin-3/2 kagome heisenberg antiferromagnet[J]. Physical review e,2016,94(3):8. |
| APA | Liu, Tao,Li, Wei,&Su, Gang.(2016).Spin-ordered ground state and thermodynamic behaviors of the spin-3/2 kagome heisenberg antiferromagnet.Physical review e,94(3),8. |
| MLA | Liu, Tao,et al."Spin-ordered ground state and thermodynamic behaviors of the spin-3/2 kagome heisenberg antiferromagnet".Physical review e 94.3(2016):8. |
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