Fractionalized Topological States in Moiré Superlattices
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Published:2024
Issue:0
Volume:0
Page:0
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ISSN:1000-3290
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Container-title:Acta Physica Sinica
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language:
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Short-container-title:Acta Phys. Sin.
Abstract
Fractional quantum Hall (FQH) states with fractionalzed quasiparticles are exotic topologically ordered quantum states driven by strong correlation between particles. Since the first discovery in 1982 in two-dimensional electron gases penetrated by strong magnetic fields, FQH physics has become an attractive frontier of condensed matter physics. From the last year, several research groups have reported observations of FQH transport at zero magnetic field in moir\'e superlattices based on transition metal dichalcogenides (TMD) and graphene. Moreover, evidence of fractional quantum spin Hall effect was also reported in TMD moir\'e superlattices. These results demonstrate that moir\'e superlattices are ideal platforms to control band structure and interactions to realize fractionalized topological states without external magnetic fields. In this paper, we will briefly review the recent progress. We will also summarize the remaining challenges and discuss the possible future development in this field.
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
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