| Field-controlled magnetic order with insulator-metal transitions in a periodic Anderson-like organic polymer | |
| L. J. Ding; K. L. Yao; H. H. Fu | |
| 2011 | |
| 发表期刊 | Physical Chemistry Chemical Physics
 |
| ISSN | 1463-9076 |
| 卷号 | 13期号:1页码:328-336 |
| 摘要 | The zero-and low-temperature behaviors of a quasi-one-dimensional organic polymer proposed as a symmetrical periodic Anderson-like chain model, in which the localized f orbitals hybridize with the conduction orbitals at even sites, are investigated by means of many-body Green's function theory. In the absence of magnetic field, the ground state of the system turns out to be ferrimagnetic. The temperature-induced phase diagrams have been explored, where the competition between the Hubbard repulsion U on the localized f orbital and the hybridization strength V makes an important impact on the transition temperature. In a magnetic field, it is found that a 1/3 magnetization plateau appears and two critical fields indicating the insulator-metal transitions at zero temperature emerge, which are closely related to the energy bands. Furthermore, the single-site entanglement entropy is a good indicator of quantum phase transitions. The temperature-field-induced phase diagram has also been attained, wherein the magnetization plateau state, the gapless phase and the spin polarized state are revealed. The temperature dependence of thermodynamic quantities such as the magnetization, susceptibility and specific heat are calculated to characterize the corresponding phases. It is also found that the up-spin and down-spin hole excitations are responsible for the thermodynamic properties. |
| 部门归属 | [ding, l. j.; yao, k. l.; fu, h. h.] huazhong univ sci & technol, sch phys, wuhan 430074, peoples r china. [ding, l. j.; yao, k. l.; fu, h. h.] huazhong univ sci & technol, wuhan high magnet field ctr, wuhan 430074, peoples r china. [yao, k. l.] chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;yao, kl (reprint author), huazhong univ sci & technol, sch phys, wuhan 430074, peoples r china;dinglinjie82@126.com klyao@mail.hust.edu.cn |
| 关键词 | Renormalization-group Method Quantum Criticality Boundary-conditions Ground-state Ferromagnet Chains Model Dimerization Solitons Scale |
| URL | 查看原文 |
| WOS记录号 | WOS:000285099800039 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/30303 |
| 专题 | 中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | L. J. Ding,K. L. Yao,H. H. Fu. Field-controlled magnetic order with insulator-metal transitions in a periodic Anderson-like organic polymer[J]. Physical Chemistry Chemical Physics,2011,13(1):328-336. |
| APA | L. J. Ding,K. L. Yao,&H. H. Fu.(2011).Field-controlled magnetic order with insulator-metal transitions in a periodic Anderson-like organic polymer.Physical Chemistry Chemical Physics,13(1),328-336. |
| MLA | L. J. Ding,et al."Field-controlled magnetic order with insulator-metal transitions in a periodic Anderson-like organic polymer".Physical Chemistry Chemical Physics 13.1(2011):328-336. |
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