DOI: 10.1038/s41467-019-11949-5. Polar and phase domain walls with conducting interfacial states in a Weyl semimetal MoTe2

Polar and phase domain walls with conducting interfacial states in a Weyl semimetal MoTe2

10.1038/s41467-019-11949-5

Crossref journal-article

Springer Science and Business Media LLC

Nature Communications (297)

Abstract

AbstractMuch of the dramatic growth in research on topological materials has focused on topologically protected surface states. While the domain walls of topological materials such as Weyl semimetals with broken inversion or time-reversal symmetry can provide a hunting ground for exploring topological interfacial states, such investigations have received little attention to date. Here, utilizing in-situ cryogenic transmission electron microscopy combined with first-principles calculations, we discover intriguing domain-wall structures in MoTe2, both between polar variants of the low-temperature(T) Weyl phase, and between this and the high-T higher-order topological phase. We demonstrate how polar domain walls can be manipulated with electron beams and show that phase domain walls tend to form superlattice-like structures along the c axis. Scanning tunneling microscopy indicates a possible signature of a conducting hinge state at phase domain walls. Our results open avenues for investigating topological interfacial states and unveiling multifunctional aspects of domain walls in topological materials.

Bibliography

Huang, F.-T., Joon Lim, S., Singh, S., Kim, J., Zhang, L., Kim, J.-W., Chu, M.-W., Rabe, K. M., Vanderbilt, D., & Cheong, S.-W. (2019). Polar and phase domain walls with conducting interfacial states in a Weyl semimetal MoTe2. Nature Communications, 10(1).

Authors 10

Fei-Ting Huang (first)
Seong Joon Lim (additional)
Sobhit Singh (additional)
Jinwoong Kim (additional)
Lunyong Zhang (additional)
Jae-Wook Kim (additional)
Ming-Wen Chu (additional)
Karin M. Rabe (additional)
David Vanderbilt (additional)
Sang-Wook Cheong (additional)

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Dates

Type	When
Created	5 years, 11 months ago (Sept. 16, 2019, 6:05 a.m.)
Deposited	2 years, 8 months ago (Dec. 16, 2022, 8:09 p.m.)
Indexed	3 weeks, 1 day ago (Aug. 6, 2025, 9:18 a.m.)
Issued	5 years, 11 months ago (Sept. 16, 2019)
Published	5 years, 11 months ago (Sept. 16, 2019)
Published Online	5 years, 11 months ago (Sept. 16, 2019)

Funders 2

Gordon and Betty Moore Foundation 10.13039/100000936
Region: Americas
pri (Trusts, charities, foundations (both public and private))
Labels5
1. Moore Foundation
2. GORDON E. & BETTY I. MOORE FOUNDATION
3. GORDON E. AND BETTY I. MOORE FOUNDATION
4. Gordon & Betty Moore Foundation
5. GBMF
Awards1
1. GBMF4413
National Science Foundation 10.13039/100000001
Region: Americas
gov (National government)
Labels4
1. U.S. National Science Foundation
2. NSF
3. US NSF
4. USA NSF
Awards1
1. DMR-1629059

BibTeX

@article{Huang_2019, title={Polar and phase domain walls with conducting interfacial states in a Weyl semimetal MoTe2}, volume={10}, ISSN={2041-1723}, url={http://dx.doi.org/10.1038/s41467-019-11949-5}, DOI={10.1038/s41467-019-11949-5}, number={1}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Huang, Fei-Ting and Joon Lim, Seong and Singh, Sobhit and Kim, Jinwoong and Zhang, Lunyong and Kim, Jae-Wook and Chu, Ming-Wen and Rabe, Karin M. and Vanderbilt, David and Cheong, Sang-Wook}, year={2019}, month=sep }

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