2018/12/05 by Zhongbo Yan, Yan, Zhongbo · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Condensed matter physics #Critical current #Current (fluid) #Electrical engineering #Engineering #FOS: Physical sciences #Geology #Graphene research and applications #Inversion (geology) #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Paleontology #Phase transition #Physics #Quantum many-body systems #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity #Theoretical physics #Topological Materials and Phenomena #Topological insulator #Topology (electrical circuits) #cond-mat.mes-hall #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.1812.02191
13 pages, 4 figures, including supplemental material
arxiv created 2018/12/05 · openalex publication_date 2018/12/05 · arxiv updated 2018/12/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The precise determination of critical point is the basis to extract various critical properties of phase transitions. We identify that for two-dimensional inversion asymmetric insulators, with and without time-reversal symmetry, when topological phase transitions take place, all nonvanishing components of band-edge shift current tensor will reverse their signs in a singular way, regardless of what realistic value the temperature takes. This remarkable sign-reversal behavior of band-edge shift current tensor thus can be applied to determine the critical points of various topological phase transitions precisely, even for temperature-driven ones. We suggest concrete materials to test our predictions.