Collective modes in imbalanced nodal line semimetal

Abstract

In this work, we investigate collective modes in a nodal line semimetal with two nodal-lines that have opposite spin polarization in the presence of spin population imbalance. We find the components of polarization operator taking into account the electron-electron exchange interaction and obtain the dispersion relations of collective modes for the bulk and surface states. There exist four modes in the bulk, among which one is gapless and other three are gapped. The gapless surface mode is sensitive to the boundary conditions.

arXiv commentPhysical Review B (To Appear)

References in corpus (32)

• Topological nodal semimetals
• Dielectric function, screening, and plasmons in 2D graphene
• Topological nodal line semimetals with and without spin-orbital coupling
• Dirac Line Nodes in Inversion Symmetric Crystals
• Topological nodal-line fermions in ZrSiSe and ZrSiTe
• Observation of Dirac plasmons in a topological insulator
• Topological semi-metals with line nodes and drumhead surface states
• Drumhead Surface States and Topological Nodal-Line Fermions in TlTaSe2
• Dirac Fermions in Antiferromagnetic Semimetal
• Collective modes of the massless Dirac plasma
• Symmetry Demanded Topological Nodal-line Materials
• Spin self-rephasing and very long coherence times in a trapped atomic ensemble
• Unexpected Dirac-Node Arc in the Topological Line-Node Semimetal HfSiS
• Landau Level Quantization and Almost Flat Modes in Three-dimensional Semi-metals with Nodal Ring Spectra
• Dimensional crossover in topological matter: Evolution of the multiple Dirac point in the layered system to the flat band on the surface
• Plasmon mode as a detection of the chiral anomaly in Weyl semimetals
• Observation of Dirac-like energy band and ring-torus Fermi surface associated with the nodal line in topological insulator CaAgAs
• Topological surface electronic states in candidate nodal-line semimetal CaAgAs
• Spin and valley polarization of plasmons in silicene due to external fields
• Nodal Line Spin-gapless Semimetals and High-quality Candidate Materials
• Unusual magneto-transport from Si-square nets in topological semimetal HfSiS
• Collective modes in nodal line semimetals
• Experimental Observation of Dirac Nodal Links in Centrosymmetric Semimetal TiB${}_2$
• Anisotropic density fluctuations, plasmons, and Friedel oscillations in nodal line semimetal
• Density response in Weyl metals
• Tunable surface plasmons in Weyl semimetals TaAs and NbAs
• Nodal-line semimetals from Weyl superlattices
• Hydrodynamics of Fermi arcs: Bulk flow and surface collective modes
• Sound of Fermi arcs
• Spin waves in quasi-equilibrium spin systems
• Spin and valley waves in Dirac semimetals with population imbalance
• Non-equilibrium Spin Waves in Paramagnetic Metals