Professor V. Kovachev
Institute of Solid State Physics, Bulgarian Academy of Sciences
vess@issp.bas.bg

       The first high temperature superconductor with zero resistance was made in Bulgaria during the spring of 1987. The temperature of the transition to superconducting state of that material was 86,5K i.e. above the temperature of liquid nitrogen boiling under the atmospheric pressure. This happened in the Institute of Solid State (ISSP) of the Bulgarian Academy of Sciences (BAS). At this time Bulgaria was in front of the states in continental Europe ( including England ).

       The history of this event was given in the present work from the author’s point of view. At that time the author was a head of the laboratory on superconductivity and superconducting materials and a deputy director of ISSP-BAS.

Nitrogen Superconductors 2006, 0:50 V. Kovachev

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