Journal
PHYSICAL REVIEW B
Volume 91, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.91.085426
Keywords
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Funding
- Harvard Quantum Optical Center
- Swiss NSF
- NCCR QSIT
- FAME (an SRC STARnet center) - MARCO
- FAME (an SRC STARnet center) - DARPA
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We study the quantum anomalous Hall effect in a strip of stripes model coupled to a magnetic skyrmion texture with zero total magnetization and in the presence of strong electron-electron interactions. A helical magnetization along the stripes and a spin-selective coupling between the stripes gives rise to a bulk gap and chiral edge modes. Depending on the ratio between the period of the magnetic structure and the Fermi wavelength, the system can exhibit the integer or fractional quantum anomalous Hall effect. In the fractional regime, the quasiparticles have fractional charges and nontrivial Abelian braid statistics.
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