Insulating materials also have superconductivity

Japan Science and Technology Agency, the University of Tokyo and Tohoku University 23 joint press release said, the researchers used the electric field effect of the insulation materials superconductivity, which laid the foundation for the future development of new superconducting materials with higher critical temperature. The communique said, the researchers selected chemically very stable, almost free of any impurities tantalum potassium as an insulating material, solid insulating material and then placed in an ion-containing liquid, the surface of the insulating material spontaneously formed electric double layer. In this kind of electric field effect, the insulating material having superconductivity, 0.05 open in the absolute temperature (minus 273.1 degrees Celsius) in the environment to achieve a zero resistance. It is reported that so far the research and development of superconducting materials mainly two categories, a class of mixed metal metallurgy method, and the other based on an insulator as the main material mixed with chemical impurities, the most representative is copper The oxide high-temperature superconducting material. The method of using field effect can be described as a new means for the development of superconducting material, it can make potassium tantalum original perceived new substance has not become superconducting material superconducting, the higher the critical temperature for the future research superconducting materials laid the foundation.

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