Theoretical physicist Egor Babaev recently received welcome confirmation, from experimental work in Belgium and Switzerland, where researchers reported that a distinct new type of non-traditional superconductivity exists, as Babaev predicted as early as 2003 that it would. The laboratory findings help to make up for what he recalls as "quite fierce opposition" his prediction met only a few years ago.
As Babaev explains, the textbook classification of superconducting materials divides them into two classes, type I and type II, depending on their response to an externally applied magnetic field. Type-I superconductivity, discovered first, has two state-defining properties: Lack of electric resistance and the fact that it does not allow an external magnetic field to pass through it. This type of superconductivity was described in the 1950s by Ginzburg and Landau, work which won a Nobel Prize in 2003. Type II superconductivity was predicted to exist in 1953 by Russian theoretical physicist Alexei Abrikosov, a student of Landau, who said there should be superconducting materials where vortices or "tiny electronic tornadoes," in Babaev's words, can form.
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