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Kibble–Zurek mechanism of Ising domains

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Title
Kibble–Zurek mechanism of Ising domains
Author(s)
Du, Kai; Fang, Xiaochen; Won, Choongjae; Chandan De; Huang, Fei-Ting; Xu, Wenqian; You, Hoydoo; Gómez-Ruiz, Fernando J.; del Campo, Adolfo; Cheong, Sang-Wook
Publication Date
2023-06
Journal
Nature Physics, v.19, pp.1495 - 1501
Publisher
Nature Research
Abstract
The formation of topological defects after a symmetry-breaking phase transition is an overarching phenomenon that encodes the underlying dynamics. The Kibble–Zurek mechanism (KZM) describes these non-equilibrium dynamics of second-order phase transitions and predicts a power-law relationship between the cooling rates and the density of topological defects. It has been verified as a successful model in a wide variety of physical systems, including structure formation in the early Universe and condensed-matter materials. However, it is uncertain if the KZM mechanism is also valid for topologically trivial Ising domains, one of the most common and fundamental types of domain in condensed-matter systems. Here we show that the cooling rate dependence of Ising domain density follows the KZM power law in two different three-dimensional structural Ising domains: ferro-rotation domains in NiTiO3 and polar domains in BiTeI. However, although the KZM slope of NiTiO3 agrees with the prediction of the 3D Ising model, the KZM slope of BiTeI exceeds the theoretical limit, providing an example of steepening KZM slope with long-range dipolar interactions. Our results demonstrate the validity of KZM for Ising domains and reveal an enhancement of the power-law exponent for transitions of non-topological quantities with long-range interactions. © 2023, The Author(s), under exclusive licence to Springer Nature Limited.
URI
https://pr.ibs.re.kr/handle/8788114/14082
DOI
10.1038/s41567-023-02112-5
ISSN
1745-2473
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > 1. Journal Papers (저널논문)
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