Long-range interaction induced phases in Weyl semimetals

Abstract

The interplay of spin orbit coupling and electron electron interaction condensing new phases of matter is an important new phenomena in solid state physics. In this paper we explore the nature of excitonic phases induced in Weyl semimetals by long range Coulomb repulsion. Its has been previously shown that short range repulsion leads to a ferromagnetic insulator while short range attraction results in a charge density wave state. Here we show the the charge density wave is the energetically favored state in the presence of long range repulsion.

arXiv comment12 pages, 4 figures

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• Crossed surface flat bands of Weyl semimetal superconductors
• Anomalous Spin Correlations and Mass-Generating Excitonic Instability of Interacting Weyl Fermions
• Signature of chiral fermion instability in the Weyl semimetal TaAs above the quantum limit
• Excitonic instability in optically-pumped three-dimensional Dirac materials
• Instability and topological robustness of Weyl semimetals against Coulomb interaction
• Magnetic phases and unusual topological electronic structures of Weyl semimetals in strong interaction limit
• Time-reversal-broken Weyl semimetal in the Hofstadter regime
• Resonant Plasmon-Axion Excitations Induced by Charge Density Wave Order in Weyl Semimetal
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• Functional renormalization group approach to interacting three-dimensional Weyl semimetals
• Fast nuclear spin relaxation rates in tilted cone Weyl semimetals: Redshift factors from Korringa relation
• Theory of phonon instabilities in Weyl semimetals at high magnetic fields
• Magnetic-field-induced electronic instability of Weyl-like fermions in compressed black phosphorus
• Shot noise in NS junctions with Weyl superconductor
• Axionic Instability of Periodic Weyl-Semimetal Superstructures