5 papers
Discovery of Van Hove Singularities: Electronic Fingerprints of 3Q Magnetic Order in a van der Waals Quantum Magnet
Hai-Lan Luo, Josue Rodriguez, Debasis Dutta +11
Magnetically intercalated transition metal dichalcogenides are emerging as a rich platform for exploring exotic quantum states in van der Waals magnets. Among them, CoxTaS2 has att…
Spin-Valley Locking in 2H-TaS2 and Its Co-Intercalated Counterpart: Roles of Surface Domains and Co Intercalation
Hai-Lan Luo, Josue Rodriguez, Maximilian Huber +10
Tuning and probing spin-valley coupling is key to understanding correlated ground states in 2-TaS. Its magnetically intercalated analogue, CoTaS, introduces…
Interacting Chern insulator transition on the sphere: revealing the Gross-Neveu-Yukawa criticality
Zhi-Qiang Gao, Taige Wang, Dung-Hai Lee
In two spatial dimensions, the transition between topological and trivial Chern insulators exemplifies a class of beyond-Landau critical phenomena. We show that the interaction-dri…
Pair Wavefunction Symmetry in UTe2 from Zero-Energy Surface State Visualization
Qiangqiang Gu, Shuqiu Wang, Joseph P. Carroll +9
Although nodal spin-triplet topological superconductivity appears probable in UTe2, its superconductive order-parameter remains unestablished. In theory, a distinctive ident…
Pair-breaking scattering interference as a mechanism for superconducting gap modulation
Zhi-Qiang Gao, Yu-Ping Lin, Dung-Hai Lee
We propose the ``pair-breaking scattering interference" as a general source of coherence peak modulations in superconductors. Assuming this mechanism, we present a simple physical…