TY - JOUR
T1 - Fu–Kane–Mele monopoles in semimetals
AU - Thiang, Guo Chuan
AU - Sato, Koji
AU - Gomi, Kiyonori
N1 - Funding Information:
G.C.T. was supported by ARC grant DE170100149, K.S. by JSPS KAKENHI Grant No. JP15K13531, and K.G. by JSPS KAKENHI Grant No. JP15K04871. G.C.T also thanks AIMR, Tohoku University, and the Simons Center for Geometry and Physics for their hospitality.
Publisher Copyright:
© 2017 The Author(s)
PY - 2017/10
Y1 - 2017/10
N2 - In semimetals with time-reversal symmetry, the interplay between Weyl points and Fu–Kane–Mele indices results in coexisting surface Dirac cones and Fermi arcs that are transmutable without a topological phase transition. We show that Weyl points act as a new type of monopole, and that their connectivity is essential for capturing the full topology of semimetals and their role as intermediaries of topological insulator transitions. The history of Weyl point creation–annihilation provides a simple and mathematically equivalent way to classify semimetals, and directly prefigures the surface state topology. We further predict the possibility of a topological Dirac cone on the interface between two Weyl semimetals.
AB - In semimetals with time-reversal symmetry, the interplay between Weyl points and Fu–Kane–Mele indices results in coexisting surface Dirac cones and Fermi arcs that are transmutable without a topological phase transition. We show that Weyl points act as a new type of monopole, and that their connectivity is essential for capturing the full topology of semimetals and their role as intermediaries of topological insulator transitions. The history of Weyl point creation–annihilation provides a simple and mathematically equivalent way to classify semimetals, and directly prefigures the surface state topology. We further predict the possibility of a topological Dirac cone on the interface between two Weyl semimetals.
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U2 - 10.1016/j.nuclphysb.2017.07.018
DO - 10.1016/j.nuclphysb.2017.07.018
M3 - Article
AN - SCOPUS:85026850467
VL - 923
SP - 107
EP - 125
JO - Nuclear Physics B
JF - Nuclear Physics B
SN - 0550-3213
ER -