Abstract:

The project is aimed at solving the problems of searching and developing manufacturing techniques for nanomaterials and nanostructures based on inorganic and organic semiconductors, in which surface conductivity plays a decisive role. The objectives of the project include the search for materials and innovative methods to improve the efficiency of thermoelectric and thermopower anisotropy in nanostructures using quantum size effects, the spin Hall effect and surface states in topological insulators (TIs).

Techniques will be developed to control the surface conductivity in wires, micro- and nanocontacts, bridges based on Bi1-xSbx and Bi2Te3 Tis, and organic semiconductors under the action of an external electric field, magnetic field, strong elastic deformation, and magnetic impurity doping.

Importance of the problem is due to the development of advanced manufacturing technology for nanostructures, both inorganic and organic, with a wide variety of physical properties from semiconducting and metallic to superconducting and TI states, which lie at the heart of a new generation of electronic and spintronic devices.

This problem will be solved using an integrated approach that combines:
- Methods for manufacturing nanostructures, including liquid phase casting and laser crystallization of semiconductor-based TIs Bi1-xSbx, Bi2X3 and organic semiconductors - radical ion salts, which are quasi-one or two dimensional in terms of their structure and properties;
- Generation of the Majorana bound states combining a superconductor and a TI.
- Modern methods of controlling the composition, structure, orientation (AFM, SEM, X-ray analysis, etc.).

- Implementation of the pilot program studying the quantum spin transport, galvanomagnetic and thermoelectric properties, oscillation effects, and current-voltage characteristics.
On the basis of the results obtained, new developments of functional devices, including hybrid materials formed by two subsystems (organic and inorganic)will be proposal for use in microelectronics, spintronics and thermoelectric energy converters, biosensors.

The program of the project also includes the development of technologies for production, transportation and end use of energy derived from unconventional sources using electronic converters.