95 citations · 323 across the 13 of their papers we have counts for
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Unsupervised learning of topological phase diagram using topological data analysis
Sungjoon Park, Yoonseok Hwang, Bohm-Jung Yang
Topology and machine learning are two actively researched topics not only in condensed matter physics, but also in data science. Here, we propose the use of topological data analys…
General construction of flat bands with and without band crossings based on wave function singularity
Yoonseok Hwang, Jun-Won Rhim, Bohm-Jung Yang
In this work, we develop a systematic method of constructing flat-band models with and without band crossings. Our construction scheme utilizes the symmetry and spatial shape of a…
Flat bands with band crossings enforced by symmetry representation
Yoonseok Hwang, Jun-Won Rhim, Bohm-Jung Yang
Flat bands have band crossing points with other dispersive bands in many systems including the canonical flat band models in the Lieb and kagome lattices. Here we show that some of…
Topological acoustic triple point
Sungjoon Park, Yoonseok Hwang, Hong Chul Choi +1
Acoustic phonon in a crystalline solid is a well-known and ubiquitous example of elementary excitation with a triple degeneracy in the band structure. Because of the Nambu-Goldston…