Unconventional inner-TL electric polarization in TL-LaOBiS₂ with ultrahigh carrier mobility

Abstract

Based on first principles calculations, we propose a new 2D ferroelectric material, triple-layer (TL) LaOBiS2, with an ultrahigh carrier mobility over 40 000 cm2 V−1 s−1 and large sunlight absorption.

The Local Structure of the BiS2 Layer in RE(O,F)BiS2 Determined by In-Plane Polarized X-ray Absorption Measurements

“…It is worth mentioning that such a distortion corresponds to atomic displacement within the BiS 2 -layer. On the basis of first principles calculations a spontaneous in-plane ferroelectric polarization has been suggested [37]. One can make several observations from the PDF shown in Figure 3.…”

Coexistence of ferroelectricity and ferromagnetism in hex-GeS nanowires

“…4,5 As a consequence, the low dimensional FE materials, with intriguing properties, have attracted much attention for function modulations, performance exploitation as well the fundamental mechanisms and new-system explorations. 6,7 As for the low-dimension FE materials, a high Curie temperature (T E c ), e.g. room temperature at least or normally above, is examined regularly.…”

“…4,5 As a consequence, the low dimensional FE materials, with intriguing properties, have attracted much attention for function modulations, performance exploitation as well the fundamental mechanisms and new-system explorations. 6,7…”

Enhanced in-plane ferroelectricity, antiferroelectricity, and unconventional 2D emergent fermions in QL-XSbO$_2$ (X= Li, Na)

“…Two-dimensional (2D) materials exfoliated from their bulk counterparts preserve stable layered structures and may overcome the enhanced depolarization field, which should facilitate the appearance of ferroelectricity, thereby opening new perspectives for exploring low-dimensional ferroelectrics [8][9][10][11][12]. So far, several atom-thick 2D materials have been proposed as ferroelectrics theoretically [11][12][13][14]. Particularly, some of them with hinge-like structures [15][16][17][18][19][20], such as phosphorene structure, were predicted to possess in-plane FE orderings.…”