Abstract Magic-angle twisted trilayer graphene (MATTG) recently emerged as a highly tunable platform for studying correlated phases of matter, such insulators and superconductivity. Superconductivity occurs in range doping levels that is bounded by van Hove singularities, which stimulates the debate origin nature superconductivity this material. In work, we discuss role spin-fluctuations arisin...

There is a tunable band gap in ABC-stacked few-layer graphene (FLG) via applying a vertical electric field, but the operation of FLG-based field effect transistor (FET) requires two gates to create a band gap and tune channel’s conductance individually. Using first principle calculations, we propose an alternative scheme to open a band gap in ABC-stacked FLG namely via single-side adsorption. T...

We investigate gated trilayer graphene partially devoid of outer layers and forming a system two trilayers connected by single layer graphene. A difference in the stacking order leads to appearance gapless states, one which is mainly localized layer. demonstrate that changing value gate voltage applied can change slope E(k) this state. As consequence direction current flowing also be changed, e...

A review of the authors’ research works on Variable-Angle Spectroscopy (VASE) graphene-based films is presented. The interaction graphene oxide (GO) with magnetron-sputtered metals a promising area. VASE optical models GO thin deposited titanium (Ti), silver (Ag) and gold (Au) are discussed. Moreover, properties nanoplatelet (GNPS) reduced (RGO) stabilized Poly(Sodium 4-Styrenesulfonate) (PSS) ...

We predict that vertical transport in heterostructures formed by twisted graphene layers can exhibit a unique bistability mechanism. Intrinsically bistable I -V characteristics arise from resonant tunneling and interlayer charge coupling, enabling multiple stable states in the sequential tunneling regime. We consider a simple trilayer architecture, with the outer layers acting as the source and...

We theoretically study the efficiency limits and performance characteristics of few-layer graphene–semiconductor solar cells (FGSCs) based on a Schottky contact device structure. model compare power conversion (PCE) various configurations by explicitly considering non-Richardson thermionic emission across graphene/semiconductor heterostructures. The calculations reveal that ABA-stacked trilayer...

It has recently been shown that superconductivity in magic-angle twisted trilayer graphene survives to in-plane magnetic fields are well excess of the Pauli limit, and much stronger than critical bilayer graphene. The difference is surprising because bilayers trilayers both support flat bands thought be fountainhead superconductivity. We show here can traced a $\mathcal{C}_2 \mathcal{M}_{h}$ sy...