Symmetry demanded topological nodal-line materials

By Shuo Yang, Hao Yang, E. Derunova, Stuart S. P. Parkin, Binghai Yan, Mazhar N. Ali. 2017

209 citations recorded by the source corpus.

Abstract The realization of Dirac and Weyl physics in solids has made topological materials one of the main focuses of condensed matter physics. Recently, the topic of topological nodal line semimetals, materials in which Dirac or Weyl-like crossings along special lines in momentum space create either a closed ring or line of degeneracies, rather than discrete points, has become a hot topic in topological quantum matter. Here, we review the experimentally confirmed and theoretically predicted topological nodal line semimetals, focusing in particular on the symmetry protection mechanisms of the nodal lines in various materials. Three different mechanisms: a combination of inversion and time-reversal symmetry, mirror reflection symmetry, and non-symmorphic symmetry and their robustness under the effect of spin orbit coupling are discussed. We also present a new Weyl nodal line material, the Te-square net compound KCu EuTe , which has several Weyl nodal lines including one extremely close to the Fermi level ( 30 meV below E ). Finally, we discuss potential experimental signatures for observing exotic properties of nodal line physics. Graphical Abstract

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/eaf6e6863b56d27ec07ecc0f4362f9589bde4c80

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In Atomic and Molecular Physics, and Optics

1. Heng Gao
2. Youngkuk Kim
3. J. Venderbos
4. Andrew M. Rappe

In Materials Chemistry

1. Heng Gao
2. Youngkuk Kim
3. J. Venderbos
4. Andrew M. Rappe

Citations in the corpus

• Topological Semimetals from First Principles (2018, background): “In this regard, we note that a number of excellent longer and shorter reviews already exist in the general area of gapless topological materials (37, 38, 39, 40, 41, 42, 26, 30, 43, 44, 45, 3, 31, 46, 47, 48, 49, 32).”