二维铁电材料的第一性原理研究进展

doi:10.16180/j.cnki.issn1007-7820.2021.10.013

Abstract

Abstract:

Due to its inherent size and surface effect, the ferroelectric properties of two-dimensional ferroelectrics are very different from those of traditional bulk ferroelectrics. So far, two-dimensional ferroelectrics have been reported to have many properties, including bulk photoelectric effect, piezoelectric / pyroelectric effect, valley polarization and spin polarization. These properties either depend on ferroelectric polarization or couple with it for electrical control, which makes 2D ferroelectrics suitable for multi-functional nano devices. At present, the research of two-dimensional ferroelectrics in theory, experiment and application is accumulating. This study briefly introduces these theories and methods. Then, the intrinsic and extrinsic origins of two-dimensional ferroelectrics are summarized respectively. Finally, the existing problems and development prospects of two-dimensional ferroelectrics are discussed.

Key words: two dimensional ferroelectric materials, first principles, ferroelectric polarization, photoelectric effect, valley polarization, spin polarization, intrinsic, extrinsic origins

CLC Number:

TN432

WU Chunxiang,ZHONG Chonggui. First Principles Research Progress of Two Dimensional Ferroelectric Materials[J].Electronic Science and Technology, 2021, 34(10): 81-86.

References 34

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First Principles Research Progress of Two Dimensional Ferroelectric Materials

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