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
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....
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 ...
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...
are shown in Fig.1. For HS-1 stacking mode, one Te atom just locates under the hollow site of the graphene lattice; for HS-2, one Te atom sits under one C atom site of the graphene lattice; for HS-3, one Te atom sits under another nonequivalent C atom site of the graphene ...
out-of-plane ripples with a periodic distribution of 1–2 nm (Fig.2e). The periodic ripples cannot extend across the WSe2when the width of WSe2exceeds 320 nm. The strain relaxation through wrinkle formation is beneficial for maintaining the integrity and flatness of the overall superlattices. ...
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.
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 ...
Electrically driven amplification of terahertz acoustic waves in graphene Aaron H. Barajas-Aguilar Jasen Zion Javier D. Sanchez-Yamagishi Nature Communications(2024) Electronic Structure and Magnetic Properties of Penta-Graphene Nanoribbons: Configurations and Adsorption Effects ...
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...