# Promising Ferroelectricity in 2D Group IV Tellurides: a First-Principles Study

Source: [Promising Ferroelectricity in 2D Group IV Tellurides: a First-Principles Study](<https://www.sota2.com/research/paper/68fa36711e209131ce8a9cb8>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T21:49:12.783Z

Authors: Wenhui Wan, Chang Liu, Wende Xiao, Yugui Yao

Published: 2017-05-25T02:42:17.000Z

## Abstract

Based on the first-principles calculations, we investigated the ferroelectric properties of two-dimensional (2D) Group-IV tellurides XTe (X=Si, Ge and Sn), with a focus on GeTe. 2D Group-IV tellurides energetically prefer an orthorhombic phase with a hinge-like structure and an in-plane spontaneous polarization. The intrinsic Curie temperature Tc of monolayer GeTe is as high as 570 K and can be raised quickly by applying a tensile strain. An out-of-plane electric field can effectively decrease the coercive field for the reversal of polarization, extending its potential for regulating the polarization switching kinetics. Moreover, for bilayer GeTe the ferroelectric phase is still the ground state. Combined with these advantages, 2D GeTe is a promising candidate material for practical integrated ferroelectric applications.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1705.09029>)

[PDF](<https://arxiv.org/pdf/1705.09029.pdf>)