@article{10902/32038,
year = {2023},
month = {12},
url = {https://hdl.handle.net/10902/32038},
abstract = {Chirality or handedness of a material can be used as an order parameter to uncover the emergent electronic properties for quantum information science. Conventionally, chirality is found in naturally occurring biomolecules and magnetic materials. Chirality can be engineered in a topological polar vortex ferroelectric/dielectric system via atomic-scale symmetry-breaking operations. We use four-dimensional scanning transmission electron microscopy (4D-STEM) to map out the topology-driven three-dimensional domain walls, where the handedness of two neighbor topological domains change or remain the same. The nature of the domain walls is governed by the interplay of the local perpendicular (lateral) and parallel (axial) polarization with respect to the tubular vortex structures. Unique symmetry-breaking operations and the finite nature of domain walls result in a triple point formation at the junction of chiral and achiral domain walls. The unconventional nature of the domain walls with triple point pairs may result in unique electrostatic and magnetic properties potentially useful for quantum sensing applications.},
organization = {Work at the Molecular Foundry was supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. S.D. acknowledges Science and Engineering Research Board (SRG/2022/000058) and Indian Institute of Science start-up grant for financial support. S.S., P.B., S.L., and R.R. are supported by the DOE Office of Science, Basic Energy Sciences, Materials Sciences, and Engineering Division under contract DE-AC02-05-CH11231 within the Quantum Materials program (KC2202). C.O. acknowledges support from a DOE Early Career Research Award. F.G.-O., P.G.-F., and J.J. acknowledge financial support from Grant No. PGC2018-096955-B-C41 funded by MCIN/AEI/10.13039/501100011033 and by ERDF “A way of making Europe,” by the European Union. F.G.-O. acknowledges financial support from Grant No. FPU18/04661 funded by MCIN/AEI/10.13039/501100011033. B.H.S. was supported by the Toyota Research Institute.},
publisher = {Nature Publishing Group},
publisher = {Nature Communications, 2023, 14(1), 4465},
title = {The emergence of three-dimensional chiral domain walls in polar vortices},
author = {Susarla, Sandhya and Hsu, Shanglin and Gómez Ortiz, Fernando and García Fernández, Pablo (físico) and Savitzky, Benjamin H. and Das, Sujit and Behera, Piush and Junquera Quintana, Francisco Javier and Ercius, Peter and Ramesh, Ramamoorthy and Ophus, Colin},
}