DOI: 10.1073/pnas.1711652115. Emergent chirality in the electric polarization texture of titanate superlattices

Emergent chirality in the electric polarization texture of titanate superlattices

10.1073/pnas.1711652115

Crossref journal-article

Proceedings of the National Academy of Sciences

Proceedings of the National Academy of Sciences (341)

Abstract

Significance Many natural structures exhibit chirality that is essential to their functional interactions, yet the chiral electronic structures found in condensed matter systems have been primarily limited to magnetic materials. Notably, the electric dipole equivalent of magnetic skyrmions has remained conspicuously elusive. However, recent theoretical predictions and experimental observations of the continuous rotation of electric polarization in titanate superlattices suggests that such complex oxide nanocomposites are ideal candidates for realizing chiral electric dipole configurations. Here we present the results from superlattices of PbTiO 3 and SrTiO 3 using a combination of resonant soft X-ray diffraction and second-principles simulations. We observe chiral arrays of polar line defects, spontaneously formed by the complex interactions in these artificial superlattices constructed from two nonchiral lattices.

Bibliography

Shafer, P., GarcÃa-FernÃ¡ndez, P., Aguado-Puente, P., Damodaran, A. R., Yadav, A. K., Nelson, C. T., Hsu, S.-L., WojdeÅ, J. C., ÃÃ±iguez, J., Martin, L. W., Arenholz, E., Junquera, J., & Ramesh, R. (2018). Emergent chirality in the electric polarization texture of titanate superlattices. Proceedings of the National Academy of Sciences, 115(5), 915â920.

Authors 13

Padraic Shafer (first)
Pablo García-Fernández (additional)
Pablo Aguado-Puente (additional)
Anoop R. Damodaran (additional)
Ajay K. Yadav (additional)
Christopher T. Nelson (additional)
Shang-Lin Hsu (additional)
Jacek C. Wojdeł (additional)
Jorge Íñiguez (additional)
Lane W. Martin (additional)
Elke Arenholz (additional)
Javier Junquera (additional)
Ramamoorthy Ramesh (additional)

References 34 Referenced 167

10.1146/annurev-conmatphys-062910-140445
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Dates

Type	When
Created	7 years, 7 months ago (Jan. 16, 2018, 11:43 a.m.)
Deposited	3 years, 4 months ago (April 13, 2022, 2:52 a.m.)
Indexed	5 days ago (Aug. 29, 2025, 6:38 a.m.)
Issued	7 years, 7 months ago (Jan. 16, 2018)
Published	7 years, 7 months ago (Jan. 16, 2018)
Published Online	7 years, 7 months ago (Jan. 16, 2018)
Published Print	7 years, 7 months ago (Jan. 30, 2018)

Funders 7

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BibTeX

@article{Shafer_2018, title={Emergent chirality in the electric polarization texture of titanate superlattices}, volume={115}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.1711652115}, DOI={10.1073/pnas.1711652115}, number={5}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Shafer, Padraic and García-Fernández, Pablo and Aguado-Puente, Pablo and Damodaran, Anoop R. and Yadav, Ajay K. and Nelson, Christopher T. and Hsu, Shang-Lin and Wojdeł, Jacek C. and Íñiguez, Jorge and Martin, Lane W. and Arenholz, Elke and Junquera, Javier and Ramesh, Ramamoorthy}, year={2018}, month=jan, pages={915–920} }

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  "relation": {},
  "ISSN": [
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  "subject": [],
  "container-title-short": "Proc. Natl. Acad. Sci. U.S.A.",
  "published": {
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