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Home Uzbekistan Technologies Changing the Physical Properties of Doped Cuprate High Temperature Superconductors

Changing the Physical Properties of Doped Cuprate High Temperature Superconductors


The doped copper oxide (cuprate) high temperature superconductors (HTSC) have attracted great interest not only for their scientific significance, but also for the obvious practical applications related to their high critical superconducting (SC) transition temperature Tc. Therefore, theoretical and experimental investigations of the metal-insulator transition (MITs), phase separation and stripe formation (i.e. formation of the metallic and insulating stripes), suppression or enhancement of Tc depending on the doping level in the cuprates will enable or systematically improve of the material quality and technological advances on the basis of the phase diagram of doped cuprates (Fig.1). The results of these researches will be used in searching and obtaining the new more technological HTSC materials. Further, physically well-founded recommendation will be worked out for possible application potential of the obtained cuprate HTSC materials in microelectronics and optoelectronics.

Innovative Aspect and Main Advantages

On the basis of our fundamental research the recommendations for possible applications of the obtained results and HTSC materials YBa2CU3O7-8 will be given. Some possible applications of doped insulating and metallic or SC cuprates are emerged from improvements in existing devices and technology such as computers, logic devices, sensors (including radiation detectors). In particular, HTSC materials can be used in the microelectronics transistors that are faster, more effective and use less energy than any conventional transistors.

Areas of Application

Synthesized and studied by us HTSC YBa2CU3O7-8 cuprates will find applications in new hybrid insulator (or semiconductor) - superconductor devices. These HTSC materials can be used in electric power transformers and stations as well as in particle accelerators. Another area showing rapid progress is HTSC filters for use in mobile phones with wireless communications.

A systematic improvement of the quality of doped cuprates YBa2CU3O7-8 and technological advances are based on this phase diagram.

Fig. 1 Fig. 1 The electronic phase diagram of the doped cuprates:
TN - the Neel temperature;
T0 - the upper crossover temperature;
T* - the pseudogap temperature;
xMIT - the critical doping level corresponding to the
metal-insulator transition;
xQSP - the so-called quantum critical point.

Stage of Development

The development of the syntering technology of high- quality HTSC cuprates for their practical applications is at the conceptual stage.

Contact Details

Institute of Nuclear Physics
Ulugbek,100214 Tashkent, Uzbekistan
Contact person: Dr. Safarali Djumanov
Tel./Fax: (+998 71) 289 2557
E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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