In this work, we have prepared the strain-free AlN film with low dislocation density (DD) by graphene (Gr)-driving strain-pre-store engineering and a unique mechanism of strain-relaxation in quasi-van der Waals (QvdW) epitaxy is presented. The DD in AlN epilayer with Gr exhibits an ...
The Mott insulator state of 1T-TaS2 is not residing in a periodic atomic lattice, but in a periodic commensurate charge density wave (CCDW) lattice. With the CDW state susceptible to external perturbations, the Mott insulator state is relatively easy to be modulated9,10. The Mott phase of ...
We performed a series of Raman and photoreflectance measurements on several InxGa1-xAs/GaAs strained layer superlattices of the same period but of different alloy compositions and substrate orientations. Both types of measurements are used in order to estimate the in-plane strain in these layers....
One paper describes a way to prepare large-strain graphene superlattices through surface energy engineering [110]. In the graphene lattice, internal carbon atoms are sp2-hybridized and form chemical bonds: the σ bond links adjacent carbon atoms into a hexagonal honeycomb structure, and the p orbit...
S.L. Hsu, Z. Hong, J.D. Clarkson, C.M.C.M. Schlepüetz, A.R. Damodaran, P. Shafer, E. Arenholz, L.R. Dedon, D. Chen, A. Vishwanath, A.M. Minor, L.Q. Chen, J.F. Scott, L W. Martin, and R. Ramesh: Observation of polar vortices in oxide superlattices.Nature530, 19...
C.K.LemosV.CerdeiraF.Vásquez-LópezC.EBSCO_AspJournal of Applied PhysicsR.A. Soref, L. Friedman, Strain measurements in InxGa1-xAs/GaAs strained-layer superlattices by photomodulated reflectance, Superlattices Microstruct. 14 (1993) 189.
Strain-modulated defect engineering of two-dimensional materials Article Open access 07 May 2024 Bandgap engineering of two-dimensional semiconductor materials Article Open access 24 August 2020 Global strain-induced scalar potential in graphene devices Article Open access 29 June 2021 Introduction...
This moiré engineering promises a versatile platform for the exploration of correlated electronics and photonics in not only 2D moiré systems, but also one-dimensional moiré superlattices in twisted bilayer graphene or TMDs58,59. Currently, heterostrain in vdW heterostructures is mainly gener- ated ...
Here, we demonstrate that heterostrain can rotate the graphene flake on monolayer h-BN within a few degrees (− 4° to 4°), and the twist angle stabilizes at specific values with applied constant strains, while the temperature effect is negligible in 100–900 K. The band gaps of ...
To this end, recent experimental studies on related GdTiO3/ SrTiO3 superlattices by Moetakef et al.11 reported the formation of a high density 2DEG where the carrier concentration can be modulated by the thickness of the STO quantum well. Moreover, a metal-to-insulator transition and ...