近日，365体育投注:物理所葛琛团队报道了铁电ZrO2中一维带电畴壁的观测。相关论文发表在2026年1月22日出版的《科学》杂志上。

具有纳米级厚度与束缚电荷的铁电带电畴壁，通常被视为畴壁纳米电子学中超薄、可重构且高导电的二维组件。这类极性拓扑结构的维度限制有望提升器件密度并释放新颖功能。

研究组报道了展现一维特性的180度头部对头部与尾部对尾部带电畴壁。这些一维带电畴壁被限制在铁电氧化锆的极性层内，其宽度和厚度均具有原子级尺度。定量分析揭示了这些畴壁独特的屏蔽机制：束缚极化电荷通过自平衡的氧空位分布实现补偿。研究组演示了电场驱动下对这些一维带电畴壁的操控，揭示了极化翻转与氧离子输运之间的微观耦合关系。

附：英文原文

Title: Observation of one-dimensional, charged domain walls in ferroelectric ZrO2

Author: Hai Zhong, Shiyu Wang, Qinghua Zhang, Zhuohui Liu, Donggang Xie, Jiali Lu, Shifeng Jin, Shufang Zhang, Er-jia Guo, Meng He, Can Wang, Lin Gu, Guozhen Yang, Kui-juan Jin, Chen Ge

Issue&Volume: 2026-01-22

Abstract: Ferroelectric charged domain walls (CDWs) with nanoscale thickness and bound charges are typically viewed as ultrathin, reconfigurable, and highly conductive two-dimensional components for domain wall nanoelectronics. Dimensional confinement of such polar topological structures has the potential to increase device density and unlock novel functionalities. We report 180° head-to-head and tail-to-tail CDWs exhibiting one-dimensional (1D) characteristics. These 1D CDWs are confined within the polar layers of ferroelectric ZrO2 and have atomic-scale dimensions in both width and thickness. Quantitative analysis unveils a distinct screening mechanism of these walls whereby bound polarization charges are compensated by self-balancing oxygen occupancy. We demonstrate electric field–driven manipulation of these 1D CDWs, revealing the microscopic coupling between polarization switching and oxygen-ion transport.

DOI: aeb7280

Source: https://www.science.org/doi/10.1126/science.aeb7280