Modern Aspects Of Superconductivity: Theory Of Superconductivity (Second Edition) by Kruchinin Sergei;

Author:Kruchinin, Sergei;
Language: eng
Format: epub
Publisher: World Scientific Publishing Company
Published: 2021-08-15T00:00:00+00:00

Fig. 4.3. The structure of MgB2 containing graphite-tape B layers separated by hexagonal close-packed layers of Mg.

We now present the recommendations concerning the search for new HTSC with higher critical temperatures which were advanced by the Nobel’s Prize winner K.A. Müller [166]. He divided the well-known HTSC into three classes:

(1) layered cuprates;

(2) MgB2;

(3) doped fullerenes of the type K3C60.

K.A. Müller emphasizes that the discovery of cuprate superconductors was promoted by the conception of Jahn–Teller polarons. Two singlet polarons form a bipolaron. Bipolarons are able, in turn, to form metallic clusters (stripes). K.A. Müller indicated the following factors which Should be taken into account in the search for new HTSC:

(1) superconductivity is favored by a layered (quasi-two-dimensional) crystalline structure;

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