268 citations · 1.6k across the 22 of their papers we have counts for
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cond-mat.mes-hall2018★ 89 cited
Symmetry representation approach to topological invariants in -symmetric systems
Junyeong Ahn, Bohm-Jung Yang
We study the homotopy classification of symmetry representations to describe the bulk topological invariants protected by the combined operation of a two-fold rotation and…
astro-ph.GA2018★ 44 cited
The Evolution of the HeII-Ionizing Background at Redshifts 2.3<z<3.8 Inferred from a Statistical Sample of 24 HST/COS HeII Ly Absorption Spectra
Gábor Worseck, Frederick B. Davies, Joseph F. Hennawi +1
We present measurements of the large-scale (~40 comoving Mpc) effective optical depth of HeII Ly absorption, , at 2.54<z<3.86 toward 16 HeII-transparent quasars obs…
cond-mat.mes-hall2018★ 268 cited
Band Topology and Linking Structure of Nodal Line Semimetals with Z2 Monopole Charges
Junyeong Ahn, Dongwook Kim, Youngkuk Kim +1
We study the band topology and the associated linking structure of topological semimetals with nodal lines carrying monopole charges, which can be realized in three-dimensi…