Holographic superconductor on Q-lattice
Ling, Y; Liu, P; Niu, C; Wu, JP; Xian, ZY
刊名JOURNAL OF HIGH ENERGY PHYSICS
2015
期号2页码:59
关键词Gauge-gravity correspondence Holography and condensed matter physics (AdS/CMT)
通讯作者Niu, C (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
英文摘要We construct the simplest gravitational dual model of a superconductor on Q-lattices. We analyze the condition for the existence of a critical temperature at which the charged scalar field will condense. In contrast to the holographic superconductor on ionic lattices, the presence of Q-lattices will suppress the condensate of the scalar field and lower the critical temperature. In particular, when the Q-lattice background is dual to a deep insulating phase, the condensation would never occur for some small charges. Furthermore, we numerically compute the optical conductivity in the superconducting regime. It turns out that the presence of Q-lattice does not remove the pole in the imaginary part of the conductivity, ensuring the appearance of a delta function in the real part. We also evaluate the gap which in general depends on the charge of the scalar field as well as the Q-lattice parameters. Nevertheless, when the charge of the scalar field is relatively large and approaches the probe limit, the gap becomes universal with omega(g) similar or equal to 9T(c) which is consistent with the result for conventional holographic superconductors.
学科主题Physics
类目[WOS]Physics, Particles & Fields
收录类别SCI
语种英语
内容类型期刊论文
源URL[http://ir.itp.ac.cn/handle/311006/21095]  
专题理论物理研究所_理论物理所1978-2010年知识产出
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Ling, Y,Liu, P,Niu, C,et al. Holographic superconductor on Q-lattice[J]. JOURNAL OF HIGH ENERGY PHYSICS,2015(2):59.
APA Ling, Y,Liu, P,Niu, C,Wu, JP,&Xian, ZY.(2015).Holographic superconductor on Q-lattice.JOURNAL OF HIGH ENERGY PHYSICS(2),59.
MLA Ling, Y,et al."Holographic superconductor on Q-lattice".JOURNAL OF HIGH ENERGY PHYSICS .2(2015):59.
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