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Site-polarized Mott phases competing with a correlated metal in twisted WSe
Siheon Ryee, Lennart Klebl, Gautam Rai +9
Twisted WSe hosts superconductivity, metal-insulator phase transitions, and field-controllable Fermi-liquid to non-Fermi-liquid transport properties. In this work, we use dynam…
Quantum melting of generalized electron crystal in twisted bilayer MoSe2
Qi Jun Zong, Haolin Wang, Qi Zhang +12
Electrons can form an ordered solid crystal phase ascribed to the interplay between Coulomb repulsion and kinetic energy. Tuning these energy scales can drive a phase transition fr…
Theory of intervalley-coherent AFM order and topological superconductivity in tWSe
Ammon Fischer, Lennart Klebl, Valentin Crépel +7
The recent observation of superconductivity in the vicinity of Fermi surface reconstructed insulating or metallic states has established twisted bilayers of WSe\textsubscript{2} as…
Engineering 2D square lattice Hubbard models in 90 twisted Ge/SnX (X=S, Se) moiré supperlattices
Qiaoling Xu, Ammon Fischer, Nicolas Tancogne-Dejean +6
Due to the large-period superlattices emerging in moire two-dimensional (2D) materials, electronic states in such systems exhibit low energy flat bands that can be used to simulate…
Moiré Engineering of Spin-Orbit Coupling in Twisted Platinum Diselenide
Lennart Klebl, Qiaoling Xu, Ammon Fischer +4
We study the electronic structure and correlated phases of twisted bilayers of platinum diselenide using large-scale ab initio simulations combined with the functional renormalizat…
Ultra-Strong Spin-Orbit Coupling and Topological Moiré Engineering in Twisted ZrS2 Bilayers
Martin Claassen, Lede Xian, Dante M. Kennes +1
We predict that twisted bilayers of 1T-ZrS realize a novel and tunable platform to engineer two-dimensional topological quantum phases dominated by strong spin-orbit interactio…
Universal moiré nematic phase in twisted graphitic systems
Carmen Rubio-Verdú, Simon Turkel, Larry Song +12
Graphene moiré superlattices display electronic flat bands. At integer fillings of these flat bands, energy gaps due to strong electron-electron interactions are generally observed…
Light-induced renormalization of the Dirac quasiparticles in the nodal-line semimetal ZrSiSe
G. Gatti, A. Crepaldi, M. Puppin +16
In nodal-line semimetals linearly dispersing states form Dirac loops in the reciprocal space, with high degree of electron-hole symmetry and almost-vanishing density of states near…
One-dimensional flat bands in twisted bilayer germanium selenide
D. M. Kennes, L. Xian, M. Claassen +1
Experimental advances in the fabrication and characterization of few-layer materials stacked at a relative twist of small angle have recently shown the emergence of flat energy ban…
Instantaneous band gap collapse in photoexcited monoclinic VO due to photocarrier doping
Daniel Wegkamp, Marc Herzog, Lede Xian +8
Using femtosecond time-resolved photoelectron spectroscopy we demonstrate that photoexcitation transforms monoclinic VO quasi-instantaneously into a metal. Thereby, we exclude…