Tunable Weyl Semi-metal and its Possible Realization in Optical Lattice

Abstract

Weyl semimetal (WSM) is an exotic topological state in condensed matter physics. In this paper, based on a two-band cubic lattice model, we studied WSMs with a pair of tunable Weyl nodes. It is pointed out that there exist three types of WSMs with different tilt strengths: type-I WSM, type-II WSM and type-1.5 WSM. In particular, type-1.5 WSM has one type-I node and one type-II node. We studied chiral modes, surface Fermi arcs and quantum anomalous Hall effect in different types of WSMs. In addition, we give an experimental setup to realize the different types of WSMs based on timely technique.

5 pages, 4 figures

References in corpus (8)

• Many-Body Physics with Ultracold Gases
• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
• Topological response in Weyl semimetals and the chiral anomaly
• Predicted Unusual Magnetoresponse in Type-II Weyl Semimetals
• Field-Selective Anomaly and Chiral Mode Reversal in Type-II Weyl Materials
• Detecting Chiral Edge States in the Hofstadter Optical Lattice
• Hybrid Weyl Semimetal

Cited by in corpus (9)

• Topological quantum matter with cold atoms
• Hybrid Dirac Semimetal in CaAgBi Materials Family
• Chiral magnetic effect in three-dimensional optical lattices
• Conductance modulation in Weyl semimetals with tilted energy dispersion without a band gap
• Topological metal bands with double-triple-point fermions in optical lattices
• Hybrid Dispersion Dirac semimetal and Hybrid Weyl phases in Luttinger Semimetals: A dynamical approach
• Simulation of nodal-line semimetal in amplitude-shaken optical lattices
• Fermi Arcs in Tilted Weyl Semimetals: Classification, Evolution and Transport Properties
• Bosonic Weyl excitations induced by $p$-orbital interactions in a cubic optical lattice