Chern-Textured Exciton Insulators with Valley Spiral Order in Moiré Materials
arXiv:2406.15342 · doi:10.1103/chsd-123t
Abstract
We explore the phase diagrams of moiré materials in search of a new class of intervalley-coherent correlated insulating state: the Chern texture insulator (CTI). This phase of matter, proposed in a companion paper, breaks valley symmetry in a nontrivial fashion wherein the valley order parameter is forced to texture in momentum space as a consequence of band topology. Using detailed Hartree-Fock studies, we establish that the CTI emerges as an energetically competitive intermediate-coupling ground state in several moiré systems which lack a twofold rotation symmetry that forbids the single-particle topology essential to the formation of the CTI valley texture.
12 + 2 pages
References in corpus (44)
- Tunable Phase Boundaries and Ultra-Strong Coupling Superconductivity in Mirror Symmetric Magic-Angle Trilayer Graphene
- Signatures of Fractional Quantum Anomalous Hall States in Twisted MoTe2 Bilayer
- Observation of Fractionally Quantized Anomalous Hall Effect
- Lattice relaxation and energy band modulation in twisted bilayer graphenes
- Quantum anomalous Hall effect from intertwined moiré bands
- Fractional Chern insulators in magic-angle twisted bilayer graphene
- Integer and fractional Chern insulators in twisted bilayer MoTe2
- Bulk Topological Invariants in Noninteracting Point Group Symmetric Insulators
- Electric field tunable unconventional superconductivity in alternating twist magic-angle trilayer graphene
- Observation of integer and fractional quantum anomalous Hall effects in twisted bilayer MoTe2
- Zero-field superconducting diode effect in small-twist-angle trilayer graphene
- Flatbands in twisted double bilayer graphene
- Band structure and topological property of twisted double bilayer graphenes
- Quantum critical behavior in magic-angle twisted bilayer graphene
- Fractional Chern Insulator in Twisted Bilayer MoTe
- Fractional quantum anomalous Hall states in twisted bilayer MoTe and WSe
- Programming Correlated Magnetic States via Gate Controlled Moiré Geometry
- Quantum textures of the many-body wavefunctions in magic-angle graphene
- Twistons in a Sea of Magic
- Family of ideal Chern flat bands with arbitrary Chern number in chiral twisted graphene multilayers
- Topological charge density waves at half-integer filling of a moiré superlattice
- Global Phase Diagram of the Normal State of Twisted Bilayer Graphene
- Polarization-driven band topology evolution in twisted MoTe and WSe
- Imaging inter-valley coherent order in magic-angle twisted trilayer graphene
- Magic-angle helical trilayer graphene
- Coulomb screening and thermodynamic measurements in magic-angle twisted trilayer graphene
- Spectroscopy of Twisted Bilayer Graphene Correlated Insulators
- Dirac cone spectroscopy of strongly correlated phases in twisted trilayer graphene
- Isospin competitions and valley polarized correlated insulators in twisted double bilayer graphene
- Imaging topological torus lattice from an electron crystal in twisted mono-bilayer graphene
- Detecting symmetry breaking in magic angle graphene using scanning tunneling microscopy
- TSTG I: Single-Particle and Many-Body Hamiltonians and Hidden Non-local Symmetries of Trilayer Moiré Systems with and without Displacement Field
- Multi-scale lattice relaxation in general twisted trilayer graphenes
- Observation of Coexisting Dirac Bands and Moiré Flat Bands in Magic-Angle Twisted Trilayer Graphene
- Topological electronic crystals in twisted bilayer-trilayer graphene
- Angle-resolved transport nonreciprocity and spontaneous symmetry breaking in twisted trilayer graphene
- Wafer-scale Programmed Assembly of One-atom-thick Crystals
- Local spectroscopy of a gate-switchable moiré quantum anomalous Hall insulator
- Kekulé spiral order in magic-angle graphene: a density matrix renormalization group study
- Helical trilayer graphene: a moiré platform for strongly-interacting topological bands
- Symmetry-broken Chern insulators in twisted double bilayer graphene
- Kekulé spirals and charge transfer cascades in twisted symmetric trilayer graphene
- Textured Exciton Insulators
- Ferroelectricity in twisted double bilayer graphene