Competition and coexistence of order parameters in holographic multi-band superconductors
文献类型：期刊论文
| 作者 | Cai, Rong-Gen1; Li, Li1; Li, Li-Fang1,2; Wang, Yong-Qiang3 |
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2013-09-13 |
| 期号 | 9页码:074 |
| 关键词 | AdS-CFT Correspondence Holography and condensed matter physics (AdS/CMT) Phenomenological Models |
| ISSN号 | 1029-8479 |
| 通讯作者 | 北京8701信箱 |
| 中文摘要 | We construct a holographic multi-band superconductor model with each complex scalar field in the bulk minimally coupled to a same gauge field. Taking into account the back reaction of matter fields on the background geometry and focusing on the two band case with two scalar order parameters, we find that depending on the strength of the back reaction and the charge ratio of the two bulk scalars, five different superconducting phases exist, and three of five phases exhibit some region where both orders coexist and are thermodynamically favored. The other two superconducting phases have only one scalar order. The model exhibits rich phase structure and we construct the full diagram for the five superconducting phases. Our analysis indicates that the equivalent attractive interaction mediated by gravity between the two order parameters tends to make the coexistence of two orders much more easy rather than more difficult. |
| 英文摘要 | We construct a holographic multi-band superconductor model with each complex scalar field in the bulk minimally coupled to a same gauge field. Taking into account the back reaction of matter fields on the background geometry and focusing on the two band case with two scalar order parameters, we find that depending on the strength of the back reaction and the charge ratio of the two bulk scalars, five different superconducting phases exist, and three of five phases exhibit some region where both orders coexist and are thermodynamically favored. The other two superconducting phases have only one scalar order. The model exhibits rich phase structure and we construct the full diagram for the five superconducting phases. Our analysis indicates that the equivalent attractive interaction mediated by gravity between the two order parameters tends to make the coexistence of two orders much more easy rather than more difficult. |
| 学科主题 | 空间物理 |
| 语种 | 英语 |
| 源URL | [http://ir.cssar.ac.cn/handle/122/1514]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 作者单位 | 1.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China 3.Lanzhou Univ, Inst Theoret Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Rong-Gen,Li, Li,Li, Li-Fang,et al. Competition and coexistence of order parameters in holographic multi-band superconductors[J]. JOURNAL OF HIGH ENERGY PHYSICS,2013(9):074. |
| APA | Cai, Rong-Gen,Li, Li,Li, Li-Fang,&Wang, Yong-Qiang.(2013).Competition and coexistence of order parameters in holographic multi-band superconductors.JOURNAL OF HIGH ENERGY PHYSICS(9),074. |
| MLA | Cai, Rong-Gen,et al."Competition and coexistence of order parameters in holographic multi-band superconductors".JOURNAL OF HIGH ENERGY PHYSICS .9(2013):074. |
入库方式： OAI收割
来源：国家空间科学中心
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