Can high-Tc superconductivity in cuprates be explained by the conventional BCS theory?

Автор(и)

  • I. Božović Brookhaven National Laboratory, Upton, New York 11973-5000, USA
  • A.T. Bollinger Brookhaven National Laboratory, Upton, New York 11973-5000, USA
  • J. Wu Brookhaven National Laboratory, Upton, New York 11973-5000, USA
  • X. He Brookhaven National Laboratory, Upton, New York 11973-5000, USA

DOI:

https://doi.org/10.1063/1.5037554

Ключові слова:

superconductivity, cuprates, molecular beam epitaxy, BCS theory.

Анотація

For overdoped cuprates, it is believed that the normal state behaves as an ordinary Fermi liquid while the superconducting state conforms to the BCS theory. We have put these beliefs to the test by a comprehensive experiment in which over two thousand cuprate films were synthesized by molecular beam epitaxy and studied in great detail and precision. Here, we compare our key experimental results to various proposed explanations based on BCS theory extended to dirty d-wave superconductors, including the cases of strong (unitary) and weak (Born) scattering on impurities. The discrepancies seem insurmountable, and point to the need to develop the theory further, likely beyond the canonical BCS paradigm.

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Опубліковано

2018-04-18

Як цитувати

(1)
Božović, I.; Bollinger, A.; Wu, J.; He, X. Can High-Tc Superconductivity in Cuprates Be Explained by the Conventional BCS Theory?. Fiz. Nizk. Temp. 2018, 44, 674-683.

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