Atypical sliding and Moire ferroelectricity in pure multilayer graphene

Abstract

Most non-ferroelectric two-dimensional materials can be endowed with so-called sliding ferroelectricity via non-equivalent homo-bilayer stacking, which is not applicable to mono-element systems like pure graphene bilayer with inversion symmetry at any sliding vector. Herein we show first-principles evidence that multilayer graphene with N>3 can all be ferroelectric, where the polarizations of polar states stem from the symmetry breaking in stacking configurations of across-layer instead of adjacent-layer, which are electrically switchable via interlayer sliding. The non-polar states can also be electrically driven to polar states via sliding, all nearly degenerate in energy, and more diverse states with distinct polarizations will emerge in more layers. In contrast to the ferroelectric Moire domains with opposite polarization directions in twisted bilayers reported previously, the Moire pattern in some multilayer graphene systems (e.g., twisted monolayer-trilayer graphene) possess nonzero net polarizations with domains of the same direction separated by non-polar regions, which can be electrically reversed upon interlayer sliding. The distinct Moire bands of two polar states should facilitate electrical detection of such sliding Moire ferroelectricity during switching.

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Cited by in corpus (17)

• Two-dimensional Topological Ferroelectric Metal with Giant Shift Current
• Excitonic signatures of ferroelectric order in parallel-stacked MoS${}_2$
• Polarization Saturation in Multi-layered Interfacial Ferroelectrics
• Inversion symmetry-broken tetralayer graphene probed by second harmonic generation
• Recent Advances in Unconventional Ferroelectrics and Multiferroics
• Ferroelectricity in crystals with non-polar point groups
• Quasi-one-dimensional sliding ferroelectricity in NbI${}_4$
• Combining intrinsic and sliding-induced polarizations for multistates in two dimensional ferroelectrics
• Ferroelectricity in twisted double bilayer graphene
• Superlubric sliding ferroelectricity
• Magnetic and ferroelectric phase diagram of twisted CrI${}_3$ layers
• Inducing Berry Curvature Dipole in Multilayer Graphene through Inhomogeneous Interlayer Sliding
• Cluster Sliding Ferroelectricity in Trilayer Quasi-Hexagonal C${}_{60}$
• Slide and Twist: Manipulating Polarization in Multilayer Hexagonal Boron-Nitride
• The interplay of ferroelectricity and magneto-transport in non-magnetic moiré superlattices
• Ferroelectric switching of interfacial dipoles in $\alpha$-RuCl${}_3$/graphene heterostructure
• Sliding and superlubric moiré twisting ferroelectric transition in HfO2