报告题目：Charge Order and Superconductivity in TMDCs
报告人：Felix Flicker，Senior Lecturer，Bristol University
报告时间：2026年7月3日（周五）上午10:30
报告地点：致远楼301室
报告摘要：The Transition Metal Dichalcogenides (TMDCs) form a broad class of structurally related quasi-2D materials, hosting a range of fascinating physical phenomena. They featured the earliest observations of charge order outside of quasi-1D materials. This led to the question of whether the mechanism was related to the weak-coupling 1D Peierls mechanism, or whether a strong-coupling mechanism was required.
I will outline a theory of the charge order in 2H-NbSe2 in which the structure of the electron-phonon coupling is key, rather than its strength [1]. By including the full momentum and orbital dependence of coupling matrix elements, the model accounts for the full range of experimental observations. We have subsequently successfully applied the principle to explain the charge order in other TMDCs such as 1T-TiSe2, 1T-VSe2, and 2H-TaSe2 [2,3,4]. I will present related experimental collaborations in which we further account for the interplay of charge order with superconductivity in 1T-TiSe2 [5].
[5] Hinloper et al., Science Advances 10, eadl3921 (2024)
[4] Luckin et al., Physical Review Research 6, 013088 (2024)
[3] Henk et al., SciPost Physics 9, 056 (2020)
[2] Kogar et al., Science 358, 1314 (2017)
[1] Flicker & Van Wezel, Nature Communications 6, 7034 (2015)
报告人简介：Felix Flicker，男，英国，Bristol University，Senior Lecturer in Physics. He was a Lecturer in Physics at Cardiff University. Before that he held The Astor Junior Research Fellowship at New College, Oxford, and a Lindemann Trust Fellowship. He was on the Perimeter Institute'sPerimeter Scholars Internationalprogramme.
Felix’s work concerns the theory of quantum matter. He works on quantum phenomena which involve interesting shapes and patterns (geometry and topology).
He has written a popular science book, The Magick of Matter; and co-founded and help run the The Grimm Network in Aperiodic Order. He is also the chair of the Institute of Physics' Theory of Condensed Matter group.
