WebJul 2, 2024 · The QAH insulator is a state of matter characterized by a chiral 1D edge current that encloses an insulating bulk. This state, which persists in the absence of a magnetic field, can be realized in a thin slab of a 3D topological insulator by introducing magnetic dopants that break time-reversal symmetry and open a mass gap in the Dirac … WebJul 25, 2024 · Our results suggest that the 3 4 -filling state is a correlated Chern insulator. We used a “tear-and-stack” dry-transfer method ( 4, 16) and standard lithographic techniques to fabricate a TBG Hall bar device ( Fig. 1A, inset) with a …
Tunable correlated Chern insulator and ferromagnetism in a …
WebJul 21, 2024 · The overall magnetic behaviour shows the expected phase diagram (Fig. 1d ); The magnetic-field-induced ferromagnetic state is found to be a topological Chern insulator, as demonstrated by the... WebJun 30, 2024 · At integer filling v = 1, we observe a zero-field Chern insulator, which—rather than being described by a global topologically invariant C —forms a mosaic of microscopic patches of C = −1, 0 or... assassin jetters
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WebDec 11, 2024 · A Chern insulator or a quantum anomalous Hall state is a topological state with integer Hall conductivity but in absence of the Landau level. It had been well established on various two-dimensional lattices with periodic structure. WebApr 18, 2014 · The fractional Chern insulator state equivalent to the 1/3 Laughlin state appears at 7/12 total filling ( 1/6 filling of the upper band). The state also features spontaneous ferromagnetism and is thus an example of the spontaneous breaking of a continuous symmetry along with a topological phase transition. WebFeb 13, 2024 · The experiment performed by Liu et. al. demonstrates a tunable transition between two distinct topological states — that is, the Chern insulator state and the axion insulator state — in a... We would like to show you a description here but the site won’t allow us. assassin jedi