The DOI matches its Crossref record; 37 of the 37 references it cites were found in a registry or an index.
Strain fields in twisted bilayer graphene
Open accessAbstract
Van der Waals heteroepitaxy allows deterministic control over lattice mismatch or azimuthal orientation between atomic layers to produce long-wavelength superlattices. The resulting electronic phases depend critically on the superlattice periodicity and localized structural deformations that introduce disorder and strain. In this study we used Bragg interferometry to capture atomic displacement fields in twisted bilayer graphene with twist angles <2°. Nanoscale spatial fluctuations in twist angle and uniaxial heterostrain were statistically evaluated, revealing the prevalence of short-range disorder in moiré heterostructures. By quantitatively mapping strain tensor fields, we uncovered two regimes of structural relaxation and disentangled the electronic contributions of constituent rotation modes. Further, we found that applied heterostrain accumulates anisotropically in saddle-point regions, generating distinctive striped strain phases. Our results establish the reconstruction mechanics underpinning the twist-angle-dependent electronic behaviour of twisted bilayer graphene and provide a framework for directly visualizing structural relaxation, disorder and strain in moiré materials. Complete strain tensor fields of twisted bilayer graphene are quantitatively mapped, revealing two-regime reconstruction mechanics depending on twist angle.
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Cites
Unconventional superconductivity in magic-angle graphene superlattices
Cao, Y., Fatemi, V., Fang, S., Watanabe, K., Taniguchi, T., Kaxiras, E., & Jarillo-Herrero, P. (2018) · Nature · doi:10.1038/nature26160 · Cited by 8,300
Self-citationMoiré bands in twisted double-layer graphene
Bistritzer, R., & MacDonald, A. H. (2011) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1108174108 · Cited by 3,072
Tuning superconductivity in twisted bilayer graphene
Yankowitz, M., Chen, S., Polshyn, H., Zhang, Y., Watanabe, K., Taniguchi, T., Graf, D., Young, A. F., & Dean, C. R. (2019) · Science · doi:10.1126/science.aav1910 · Cited by 2,290
Self-citationEmergent ferromagnetism near three-quarters filling in twisted bilayer graphene
Sharpe, A. L., Fox, E. J., Barnard, A. W., Finney, J., Watanabe, K., Taniguchi, T., Kastner, M. A., & Goldhaber-Gordon, D. (2019) · Science · doi:10.1126/science.aaw3780 · Cited by 1,723
Self-citationSuperconductors, orbital magnets and correlated states in magic-angle bilayer graphene
Lu, X., Stepanov, P., Yang, W., Xie, M., Aamir, M. A., Das, I., Urgell, C., Watanabe, K., Taniguchi, T., Zhang, G., et al. (2019) · Nature · doi:10.1038/s41586-019-1695-0 · Cited by 1,590
Self-citationEvidence for moiré excitons in van der Waals heterostructures
Tran, K., Moody, G., Wu, F., Lu, X., Choi, J., Kim, K., Rai, A., Sanchez, D. A., Quan, J., Singh, A., et al. (2019) · Nature · doi:10.1038/s41586-019-0975-z · Cited by 1,371
Self-citationSignatures of moiré-trapped valley excitons in MoSe2/WSe2 heterobilayers
Seyler, K. L., Rivera, P., Yu, H., Wilson, N. P., Ray, E. L., Mandrus, D. G., Yan, J., Yao, W., & Xu, X. (2019) · Nature · doi:10.1038/s41586-019-0957-1 · Cited by 1,223
Emergence of superlattice Dirac points in graphene on hexagonal boron nitride
Yankowitz, M., Xue, J., Cormode, D., Sanchez-Yamagishi, J. D., Watanabe, K., Taniguchi, T., Jarillo-Herrero, P., Jacquod, P., & LeRoy, B. J. (2012) · Nature Physics · doi:10.1038/nphys2272 · Cited by 1,178
Self-citationObservation of moiré excitons in WSe2/WS2 heterostructure superlattices
Jin, C., Regan, E. C., Yan, A., Iqbal Bakti Utama, M., Wang, D., Zhao, S., Qin, Y., Yang, S., Zheng, Z., Shi, S., et al. (2019) · Nature · doi:10.1038/s41586-019-0976-y · Cited by 1,157
Self-citationOphus, C. (2019) · Microscopy and Microanalysis · doi:10.1017/s1431927619000497 · Cited by 1,075
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Metadata
- Authors
- Kazmierczak, N. P., Van Winkle, M., Ophus, C., Bustillo, K. C., Carr, S., Brown, H. G., Ciston, J., Taniguchi, T., Watanabe, K., & Bediako, D. K.
- Venue
- Nature Materials
- Published
- 2021-04-15
- Volume
- 20
- Issue
- 7
- Pages
- 956-963
- ISSN
- 1476-1122 (ISSN-L)
- 1476-4660
- OpenAlex
- W3081285874
- Cited by
- 268
- References
- 37
- FWCI
- 12.37
- Type
- journal article
- Language
- en
- Open access
- green
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- Kazmierczak, N. P., Van Winkle, M., Ophus, C., Bustillo, K. C., Carr, S., Brown, H. G., Ciston, J., Taniguchi, T., Watanabe, K., & Bediako, D. K. (2021). Strain fields in twisted bilayer graphene. Nature Materials. https://doi.org/10.1038/s41563-021-00973-w
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