Rendering a doped Mott insulator in a NbSe2 heterostructure (2023)
2D lateral heterostructures in VSe2-NbSe2 (2022)
*These Are Research Footage In Pre-Alpha Dev Build Under Heavy Development.
†Work In Progress - Does Not Represent The Final Look Of The Research.
RESEARCH PIPELINE
Doped Mott insulator is one of the paradigmatic models for strongly correlated systems. Here we use heterostructure technique to render a doped Mott insulator in a transition metal dichalcogenide NbSe2. It provides a condensed matter experimental platform for the triangular lattice Fermi-Hubbard model.
Heavy fermions in 1H/1T-NbSe2 heterostructure, where effective mass of electron become heavy. 1H-phase provide conduction electron, while 1T-phase's charge density wave provieds an effective triangular spin-½ lattice with localized spin moments. The Kondo coupling between these c-electrons and d-electrons of NbSe2 build up a Kondo lattice without rare-earth elements.
2D Lateral heterostructure of 1T-VSe2—1H-NbSe2, with atomic sharp and precision 1D interface. Charge density wave of both materials are preserved and abruptly switch at interfaces, which suggests the strong electron-phonon interaction is the driving mechanism for their CDWs. Lateral heterostructures are synthesized by a one-pot, two-step growth directly from molecular beam epitaxy.
1T—1H-NbSe2 lateral heterostructure, with atomically well-defined interfaces. √13×√13 hexagram CDW of 1T-phase and 3×3 CDW of 1H-phase meet together.
FeSe/SrTiO3 is a high-temperature superconducting platform, for searching and understanding unconventional pairing mechanism, as well as its relationship to nematicity and stripe magnetism.
Electronic nematic phase in FeSe/SrTiO3, attributing to spin-driven i.e. stripe magnetic state or orbital-driven.
Magnons from 2D ferromagnetic CrBr3/MoSe2 heterostructure, where a a moiré show up as well.
Tomonaga–Luttinger liquid, a toy model of interacting fermions inside a 1D box, rendered at MoSe2 mirror twin boundary. It's a paradigmatic non-Fermi liquid, featured with spin-charge seperation, and power-law suppression of tunneling conductance with universal scaling in energy and temperature.
Spinful Luttinger liquid in a 1D magnetic box, built by an out-of-plane ferromagnetic insulator CrBr3 on a MoSe2 mirror twin boundary. Will the magnetic proximity effect lead this spinful Luttinger liquid to become helical/spiral?
MoSSe alloy, chemically modified from a monolayer MoSe2 in sulfur vapor. At dark spots, Se might get substituded partially/fully by S. Bright spot are point defects, like vacancy.
Twisted graphene near magic angle, naturally occuring in highly oriented pyrolytic graphite. Twisting angle=1.33°.
Quantum corral made of Co atoms on Ag(111) surface in a elliptical shape; two additional Co are at its focus points. The scattering of surface electrons inside the mirage assembles a atomic/molecular-orbital-like standing-wave pattern, so hence build another artificial atom/molecule yet again.
*These Are Research Footage In Pre-Alpha Dev Build Under Heavy Development.
†Work In Progress - Does Not Represent The Final Look Of The Research.
The ingredient we start with is pure element,
everything else is value added by people.
