Dynamical gap from holography in the charged dilaton black hole
arXiv:1210.5735 · doi:10.1088/0264-9381/30/14/145011
Abstract
We study the holographic non-relativistic fermions in the presence of bulk dipole coupling in charged dilatonic black hole background. We explore the nontrivial effects of the bulk dipole coupling, the fermion charge as well as the dilaton field on the flat band, the Fermi surface and the emergence of the gap by investigating the spectral function of the non-relativistic fermion system. In particular, we find that the presence of the flat band in the non-relativistic case will suppress the Fermi momentum. Besides, we observe that the effect of the dipole coupling in the dilaton gravity is more explicit. Finally, we consider the non-relativistic fermions at nonzero temperature. A phase transition from insulator to a conducting state is observed as the fermion system becomes hotter.
16 pages, many figures, version accepted to be published in Class. Quantum Grav
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- Fermionic phase transition induced by the effective impurity in holography
- Formation of Fermi surfaces and the appearance of liquid phases in holographic theories with hyperscaling violation
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- Trajectories of photons around a rotating black hole with unusual asymptotics
- Charged Lifshitz black hole and probed Lorentz-violation fermions from holography
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- Fermion Dipole Moment and Holography