Ferroelectricity in barium titanate quantum dots and wires

被引：89

作者：

Fu, HX ^{[1
]}

Bellaiche, L ^{[1
]}

机构：

[1] Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.91.257601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Properties of BaTiO3 colloidal quantum dots and wires are simulated using a first-principles-based approach. Large atomic off-center displacements (that are robust against capping matrix materials) are found to exist in very small (<5 nm) dots. We further determine the size dependences of electrical and electromechanical responses in the studied nanostructures, as well as provide microscopic understanding of these responses.

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页数：4

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