Spontaneous spin-triplet exciton condensation in ABC-stacked trilayer graphene
文献类型：期刊论文
| 作者 | Liu, HW ; Jiang, H ; Xie, XC ; Sun, QF |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2012 |
| 卷号 | 86期号:8 |
| 关键词 | BOSE-EINSTEIN CONDENSATION SUPERCONDUCTIVITY |
| ISSN号 | 1098-0121 |
| 通讯作者 | Liu, HW (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We study the neutral filling ABC-stacked trilayer graphene with a long-range Coulomb interaction. The extremely large density of states near Dirac points leads to more plausible formation of spin ferromagnets, and our calculation indicates that the spin split energy approximates to 32 meV. Electron and hole carriers coexist in this spontaneous ferromagnetic system. The Coulomb interaction between carriers with opposite charge leads to triplet exciton condensation, namely, a spin superconductor. Using a BCS-type self-consistent calculation, we demonstrate the exciton condensation energy gap is about 7.8 meV. Further, we consider the thermal fluctuations and determine the Berezinskii-Kosterlitz-Thouless critical temperature to be around 11 K. |
| 收录类别 | SCI |
| 资助信息 | National Science Foundation of China [10821403, 10974236, 11074174]; NBRPC [2012CB-921300]; National Natural Science Foundation of China [91121004]; China Postdoctoral Science Foundation [20100480147, 201104030] |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/52976]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu, HW,Jiang, H,Xie, XC,et al. Spontaneous spin-triplet exciton condensation in ABC-stacked trilayer graphene[J]. PHYSICAL REVIEW B,2012,86(8). |
| APA | Liu, HW,Jiang, H,Xie, XC,&Sun, QF.(2012).Spontaneous spin-triplet exciton condensation in ABC-stacked trilayer graphene.PHYSICAL REVIEW B,86(8). |
| MLA | Liu, HW,et al."Spontaneous spin-triplet exciton condensation in ABC-stacked trilayer graphene".PHYSICAL REVIEW B 86.8(2012). |
入库方式： OAI收割
来源：物理研究所
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