Videofilm of demonstration of superconductivity at a room temperature http://narod.ru/disk/7857308000/%D0%92%D1%8B%D1%81%D1%82%D1%83%D0%BF%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5%20%D0%92.%D0%9B.%D0%94%D0%B5%D1%80%D1%83%D0%BD%D0%BE%D0%B2%D0%B0.wmv.html
The theory and the mechanism of a superconductor at a room temperature http://viktor19451.narod.ru/

A superconductivity theory was developed based on the new particle – multielectron - by means of artificial
intelligence. The theory meets the modern requirements, explains and summarizes noted experimental results, and
assigns properties of superconductor of the ambient temperature.
A Nobel prize winner in the field of superconductivity A. Leggett [1] has stated the main requirements which
must be meet by the modern superconductivity theory based on firmly established experimental results:
1- to use current carrier charge -2e;
2- to tale into consideration the carrier’s spin, which equals to 0 (singlet state);
3- to explain why the high temperature superconductivity takes place only in cuprates (CuO2);
4- to explain relative independence of high temperature superconductivity effect in related cuprates layers;
5- to determine the cause of difference in isotope effect for chemical element which are low temperature
superconductors;
6- to explain the superconductivity effect for d-electrons;
7- to explain observed sizes of current carriers within the rate 1..3 nanometer;
8- to determine the cause of pseudo gap appearance and its role in the high temperature superconductivity as well
as electrons’ interrelation in the reversion of state with different spins.
All the explanations must be supplied with a single point of view and as a result the superconductivity theory
must answer the main question about the state of superconductor under the ambient temperature.
Developed and set forth below the multielectron superconductivity theory meets the abovementioned
requirements.

Hi,

Since the discovery of high-temperature superconductors, several materials have been claimed to be room-temperature superconductors. In every case,independent investigation has quickly proven these claims false. As a result, most condensed matter physicists now treat with extreme skepticism any further claims of this nature.
A room-temperature superconductor is a material yet to be discovered which would be capable of exhibiting superconducting properties at operating temperatures above 0° C (273.15 K). This is not strictly speaking room temperature (approx. 20–25°C), but it can be reached cheaply.
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Tenders

The room superconductor represents multilayered structure, superconducting in a range of temperatures 77 - 620 K.
Superconductivity is confirmed by complex researches:
1. Two-partial tunneling.
2. Effect Josephson on an alternating current.
3. Effect Josephson on a direct current.
4. Effect of absorption of high-frequency radiation.
5. Display of diamagnetism.
6. Special structure of superconducting channels and
superconducting pair.