Nexus and Dirac lines in topological materials. (11th September 2015)

• Record Type: Journal Article
• Authors: Heikkilä, T T; Volovik, G E
• Is Part Of: New journal of physics. Volume 17:Number 9(2015:Sep.)
• Publication Date: 2015-09-11
• Subjects: nexus -- graphite -- dirac lines; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/17/9/093019
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: We consider the Z 2 topology of the Dirac lines, i.e., lines of band contacts, on an example of graphite. Four lines—three with topological charge each and one with —merge together near the H-point and annihilate due to summation law . The merging point is similar to the real-space nexus, an analog of the Dirac monopole at which the Z 2 strings terminate.