Volume 120, Number 4, November 2017
|Number of page(s)||7|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||06 February 2018|
Fermi arcs in tilted Weyl semimetals: Classification, evolution and transport properties
1 Department of Physics, Beijing Normal University - Beijing 100875, China
2 School of Science, Xi'an Technological University - Xi'an 710021, China
Received: 12 August 2017
Accepted: 15 January 2018
The Weyl semimetal is a new quantum state of a topological semimetal, of which topological surface states —the Fermi arcs— exist. The Fermi arcs of Weyl semimetals are classified into two classes, designated class-1 and class-2. Based on a tight-binding model, the evolution and transport properties of these classes are studied via the tilting strength of the bulk Weyl cones. The (residual) anomalous Hall conductivity of the topological surface states is a physical attribute of class-1 Fermi arcs and hence class-1 Fermi arcs become a nontrivial topological property of either a hybrid or a type-II Weyl semimetal. Therefore, this work provides an intuitive method in learning about the topological properties of Weyl semimetals.
PACS: 73.20.At – Surface states, band structure, electron density of states / 71.90.+q – Other topics in electronic structure (restricted to new topics in section 71) / 73.43.-f – Quantum Hall effects
© EPLA, 2018
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