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题名: Competition and coexistence of order parameters in holographic multi-band superconductors
作者: Cai, RG ;  Li, L ;  Li, LF ;  Wang, YQ
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2013
期号: 9, 页码:74
学科分类: Physics
通讯作者: Cai, RG (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Cai, Rong-Gen; Li, Li; Li, Li-Fang] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China; [Li, Li-Fang] Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China; [Wang, Yong-Qiang] Lanzhou Univ, Inst Theoret Phys, Lanzhou 730000, Peoples R China
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.
资助者: National Natural Science Foundation of China [10821504, 10975168, 11035008, 11205226, 11175019, 41231066, 11005054]; Ministry of Science and Technology of China [2010CB833004]; National Basic Research Program of China (973 Program) [2011CB811404]; Specialized Research Fund for State Key Laboratories
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000325229300004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15279
Appears in Collections:理论物理所2013年知识产出 _期刊论文

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Recommended Citation:
Cai, RG,Li, L,Li, LF,et al. Competition and coexistence of order parameters in holographic multi-band superconductors[J]. JOURNAL OF HIGH ENERGY PHYSICS,2013(9):74.
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