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Chinese Physics C> 2018, Vol. 42> Issue(1) : 013106 DOI: 10.1088/1674-1137/42/1/013106

Holographic superconductor on a novel insulator

  • 1.

     Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

  • 2.

      Department of Physics, Jinan University, Guangzhou 510632, China

  • 3.

      Institute of Gravitation and Cosmology, Department of Physics, School of Mathematics and Physics, Bohai University, Jinzhou 121013, China

  • 4.

     Center for Relativistic Astrophysics and High Energy Physics, Department of Physics, School of Sciences, Nanchang University, Nanchang 330031, China

  • We construct a holographic superconductor model, based on a gravity theory, which exhibits novel metal-insulator transitions. We investigate the condition for the condensation of the scalar field over the parameter space, and then focus on the superconductivity over the insulating phase with a hard gap, which is supposed to be Mott-like. It turns out that the formation of the hard gap in the insulating phase benefits the superconductivity. This phenomenon is analogous to the fact that the pseudogap phase can promote the pre-pairing of electrons in high Tc cuprates. We expect that this work can shed light on understanding the mechanism of high Tc superconductivity from the holographic side.
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  • References

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Yi Ling, Peng Liu, Jian-Pin Wu and Meng-He Wu. Holographic superconductor on a novel insulator[J]. Chinese Physics C, 2018, 42(1): 013106. doi: 10.1088/1674-1137/42/1/013106
Yi Ling, Peng Liu, Jian-Pin Wu and Meng-He Wu. Holographic superconductor on a novel insulator[J]. Chinese Physics C, 2018, 42(1): 013106.  doi: 10.1088/1674-1137/42/1/013106 shu
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Received: 2017-09-15
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    Supported by Natural Science Foundation of China (11575195, 11775036, 11305018), Y.L. also acknowledges the support from Jiangxi young scientists (JingGang Star) program and 555 talent project of Jiangxi Province. J. P. Wu is also supported by Natural Science Foundation of Liaoning Province (201602013)

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Holographic superconductor on a novel insulator

    Corresponding author: Yi Ling,
    Corresponding author: Peng Liu,
    Corresponding author: Jian-Pin Wu,
    Corresponding author: Meng-He Wu,
  • 1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • 2.  Department of Physics, Jinan University, Guangzhou 510632, China
  • 3.  Institute of Gravitation and Cosmology, Department of Physics, School of Mathematics and Physics, Bohai University, Jinzhou 121013, China
  • 4. Center for Relativistic Astrophysics and High Energy Physics, Department of Physics, School of Sciences, Nanchang University, Nanchang 330031, China
  • Received Date: 2017-09-15
  • Available Online: 2018-01-05
Fund Project:  Supported by Natural Science Foundation of China (11575195, 11775036, 11305018), Y.L. also acknowledges the support from Jiangxi young scientists (JingGang Star) program and 555 talent project of Jiangxi Province. J. P. Wu is also supported by Natural Science Foundation of Liaoning Province (201602013)

Abstract: We construct a holographic superconductor model, based on a gravity theory, which exhibits novel metal-insulator transitions. We investigate the condition for the condensation of the scalar field over the parameter space, and then focus on the superconductivity over the insulating phase with a hard gap, which is supposed to be Mott-like. It turns out that the formation of the hard gap in the insulating phase benefits the superconductivity. This phenomenon is analogous to the fact that the pseudogap phase can promote the pre-pairing of electrons in high Tc cuprates. We expect that this work can shed light on understanding the mechanism of high Tc superconductivity from the holographic side.

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