Chiral domain walls in conjugate Chern bands bind a dipole density set by a geometric coefficient c_G, producing a metastable texture that explains long-lived excitations in twisted MoTe2.
Interacting phase diagram of twisted bilayer MoTe$_2$ in magnetic field
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abstract
We study electron-electron interaction induced states of twisted bilayer MoTe$_2$ in an out-of-plane magnetic field $B\hat{\bf z}$ near one hole per moir\'e unit cell filling. The 3D phase diagram showing the evolution of competing phases with $B$, interaction strength and an out-of-plane electric field is presented at electron fillings that follow the Diophantine equation along Chern number $-\text{sign}\left(B\right)$ line, that is pointing away from the charge neutral filling, where we find prominent Chern insulators consistent with the experiments. We also explain the experimental absence of prominent Chern insulators along the Chern number $+\text{sign}\left(B\right)$ line.
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A quantum geometric mechanism for chiral domain wall metastability: Application to twisted transition-metal dichalcogenides
Chiral domain walls in conjugate Chern bands bind a dipole density set by a geometric coefficient c_G, producing a metastable texture that explains long-lived excitations in twisted MoTe2.