Pseudo-gap phase and duality in a holographic fermionic system with dipole coupling on Q-lattice

Yi Ling; Peng Liu; Chao Niu; Jian-Pin Wu

doi:10.1088/1674-1137/40/4/043102

Chinese Physics C> 2016, Vol. 40> Issue(4) : 043102 DOI: 10.1088/1674-1137/40/4/043102

Pseudo-gap phase and duality in a holographic fermionic system with dipole coupling on Q-lattice

Yi Ling ^1,3,, ,
Peng Liu ^1,, ,
Chao Niu ^1,, ,
Jian-Pin Wu ^2,3,,

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Abstract：
We classify the different phases by the "pole-zero mechanism" for a holographic fermionic system which contains a dipole coupling with strength p on a Q-lattice background. A complete phase structure in p space can be depicted in terms of Fermi liquid, non-Fermi liquid, Mott phase and pseudo-gap phase. In particular, we find that in general the region of the pseudo-gap phase in p space is suppressed when the Q-lattice background is dual to a deep insulating phase, while for an anisotropic background, we have an anisotropic region for the pseudo-gap phase in p space as well. In addition, we find that the duality between zeros and poles always exists regardless of whether or not the model is isotropic.
- holographic Q-lattice ,
- pole-zero mechanism ,
- fermionic system

References

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Yi Ling, Peng Liu, Chao Niu and Jian-Pin Wu. Pseudo-gap phase and duality in a holographic fermionic system with dipole coupling on Q-lattice[J]. Chinese Physics C, 2016, 40(4): 043102. doi: 10.1088/1674-1137/40/4/043102

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Received: 2015-07-23
Revised: 2015-10-23

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Supported by National Natural Science Foundation of China(11275208, 11305018, 11178002), Jiangxi Young Scientists(JingGangStar) Progran and 555 Talent Project of Jiangxi Province, Liaoning Excellent Talents in University(LJQ2014123)

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Pseudo-gap phase and duality in a holographic fermionic system with dipole coupling on Q-lattice

Corresponding author: Yi Ling,

Corresponding author: Peng Liu,

Corresponding author: Chao Niu,

Corresponding author: Jian-Pin Wu,

Received Date: 2015-07-23

Accepted Date: 2015-10-23

Available Online: 2016-03-28

Fund Project: Supported by National Natural Science Foundation of China(11275208, 11305018, 11178002), Jiangxi Young Scientists(JingGangStar) Progran and 555 Talent Project of Jiangxi Province, Liaoning Excellent Talents in University(LJQ2014123)

Abstract: We classify the different phases by the "pole-zero mechanism" for a holographic fermionic system which contains a dipole coupling with strength p on a Q-lattice background. A complete phase structure in p space can be depicted in terms of Fermi liquid, non-Fermi liquid, Mott phase and pseudo-gap phase. In particular, we find that in general the region of the pseudo-gap phase in p space is suppressed when the Q-lattice background is dual to a deep insulating phase, while for an anisotropic background, we have an anisotropic region for the pseudo-gap phase in p space as well. In addition, we find that the duality between zeros and poles always exists regardless of whether or not the model is isotropic.

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Pseudo-gap phase and duality in a holographic fermionic system with dipole coupling on Q-lattice

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