Registration Number
0221U106522,
0120U000267
, R & D reports
Title
Nano-hetero-structures on the base of magnetic half-metals and superconductors as promising functional materials for superconducting spintronics: electrical, magnetic and optical properties, effects of electronics topological state
popup.stage_title
Head
Krivoruchko Volodymyr M., Доктор фізико-математичних наук
Registration Date
09-12-2021
Organization
Galkin Donetsk Institute of Physics and Technology of the National Academy of Sciences of Ukraine
popup.description2
The work goal: Experimental investigations and theoretical calculations physical properties of promising nano-hetero-materials and the establishment of scientifically grounded principles for the formation of new functional materials for spin electronics.
Research results: Experimental proof of the latent spin-triplet pairing in half-metallic manganites is presented and the conditions to realize the topological superconducting state of nanostructures based on them are discussed.
The influence of structural disorder on the transport and magnetic properties of Housler Ni50Mn35In15 alloy films has been experimentally investigated. The values of effective magnetization and saturation magnetization of the amorphous films, which were determined by ferromagnetic resonance and magnetometry using a vibrating magnetometer, differ more than 50 times, while having the same temperature dependence of the magnetization. The model based on the heterogeneous structure of amorphous films is proposed to explain this unusual phenomenon.
Primary calculations show that the Heusler alloys Co2HfGe, Co2ZrGe and Fe2CrGa have a ferromagnetic type of magnetic ordering with a significant resulting magnetic moment per unit and a high (≈ 100%) degree of conduction electrons spin polarization.
The peculiarities of contacting heterostructures differential conductivity on the base of superconductors, which are caused by degradation of the surface of a superconducting film or an artificially nanosized shell on its surface, have been studied. The results are important for the fabrication of superconducting multilayer structures.
Product Description
popup.authors
Dmitrenko Viktoriia Yu
Zhitlukhina Olena S.
Kudriavtsev Yurii V
Tarenkov Volodymyr Yu
Uvarov Mykola V
popup.nrat_date
2021-12-09
