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TYhe possibility of realizing room-temperature superconductivity in high-Tc cuprates in their two-dimensional sandwich layers

Functional Materials, ISSN: 2218-2993, Vol: 29, Issue: 4, Page: 475-480
2022
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Article Description

Based on the predictions of the theory of a superfluid Bose-liquid of unconventional (tightly-bound) Cooper pairs, we consider the possibility of realizing room-temperature superconductivity in distinctive high-T cuprate materials containing many grain boundaries, in ter faces and planes in the layered blocks. We argue that such high-T materials (e.g., Bi/Pb-based high-T cuprates) are the most promising and have certain favorable properties, which can serve as a possible guide in the search for persisting room-temperature superconductivity maintained in two-dimensional (2D) regions (e.g. at planar sheets or plates). We show that the superconducting transition temperature T is much lower in the bulk of high-T cuprates than at planes in them; and the three-dimensional (3D) superconductivity in these materials is destroyed above the bulk T, while the 2D superconductivity is maintained at grain boundaries and interfaces and in the multiplate blocks up to room temperature at atmospheric pressure. We predict that the crossover from bulk to surface Bose-liquid superconductivity in the alternating 3D/2D sandwich layers might be possible route to room-temperature superconductivity in promising high-T.. cuprate materials. Various experiments on some families of high-T cuprates confirm the theory of Bose-liquid superconductivity and the signs of the superconducting transitions at temperatures well above the bulk T and sometimes close to room temperature.

Bibliographic Details

S. Dzhumanov; A. L. Solovjov; R. V. Vovk; B. V. Grinyov; Sh S. Djumanov

National Academy of Sciences of Ukraine (Co. LTD Ukrinformnauka) (Publications)

Materials Science

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