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  Local Sensing of Correlated Electrons in Dual-moiré Heterostructures using Dipolar Excitons

Li, W., Devenica, L. M., Zhang, J., Zhang, Y., Lu, X., Watanabe, K., et al. (2021). Local Sensing of Correlated Electrons in Dual-moiré Heterostructures using Dipolar Excitons.

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2111.09440.pdf (Preprint), 5MB
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https://arxiv.org/abs/2111.09440 (Preprint)
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 Creators:
Li, W.1, Author
Devenica, L. M.1, Author
Zhang, J.2, Author              
Zhang, Y.3, Author
Lu, X.4, Author
Watanabe, K.5, Author
Taniguchi, T.5, Author
Rubio, A.2, 6, 7, 8, Author              
Srivastava, A.1, Author
Affiliations:
1Department of Physics, Emory University, ou_persistent22              
2Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
3Department of Physics, Massachusetts Institute of Technology, ou_persistent22              
4Department of Physics, Tulane University, ou_persistent22              
5National Institute for Materials Science, Tsukuba, ou_persistent22              
6Center for Free Electron Laser Science, ou_persistent22              
7Center for Computational Quantum Physics, Simons Foundation Flatiron Institute, ou_persistent22              
8Nano-BioSpectroscopy Group, Departamento de Fisica de Materiales, Universidad del País Vasco, ou_persistent22              

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Free keywords: Condensed Matter, Mesoscale and Nanoscale Physics, cond-mat.mes-hall
 Abstract: Moiré heterostructures are rapidly emerging as a tunable platform to study correlated electronic phenomena. Discovery of exotic quantum phases in moiré systems requires novel probes of charge and spin order. Unlike detection schemes which average over several moiré cells, local sensors can provide richer information with greater sensitivity. We study a WSe2/MoSe2/WSe2 heterotrilayer which hosts excitons and electrons in distinct moiré lattices, and show that localized dipolar excitons are sensitive proximity charge sensors, uncovering numerous correlated electronic states at fractional fillings of the multi-orbital moiré lattice. In addition, the emission polarization can reveal the local electronic spin configuration at different fillings. Our results establish dipolar excitons as promising candidates to study emergent quantum matter and quantum magnetism in moiré crystals with higher spatial resolution.

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Language(s): eng - English
 Dates: 2021-11-17
 Publication Status: Published online
 Pages: 47
 Publishing info: -
 Table of Contents: -
 Rev. Type: No review
 Identifiers: arXiv: 2111.09440
 Degree: -

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