Search academic texts

Information × Registration Number 0121U112812, ( 0221U106777  ) R & D request Title Straintronics of imperfect quasi-two-dimensional materials: coplanar vs lamellar heterostructures Head Radchenko Taras M., Доктор фізико-математичних наук Registration Date 06-09-2021 Organization Institute of Metal Physics. G.V. Kurdyumov of the National Academy of Sciences of Ukraine popup.description1 The project aims at exploiting a scale-bridging approach to systematically study the electronic transport properties of heterostructures made of different 2D materials. Our focus will lie on: (1) the influence of various types of defects, ranging from local perturbations such as vacancies or impurity atoms up to extended defects (grain boundaries, atomic steps and terraces, wrinkles, etc.); (2) how globally (homogeneous) or locally (heterogeneous) applied strains may be used to control the electrical response of these systems. As a reference point, we will first address graphene/phosphorene heterostructures; based on the obtained results other combinations of 2D materials may be dealt within a later stage of the project. From the computational point of view, we will approach the problem from two complementary sides: coherent transport using atomistic Green’s function approaches at the level of few nanometers, and real-space wave packet dynamics to treat few hundred of nanometers. Bridging between the two approaches will be carried out by providing (a) structural information for defective structures, and (b) efficient parametrizations for the various scenarios relevant to the proposal (different types of defects and strains). The outcomes of the project may provide new routes for defect and strain engineering (design) of the 2D-materials-based heterostructures, and thus shed further light on the potential of such systems in nanoelectronic applications. popup.nrat_date 2024-12-09 Close