Multigap superconductivity in doped p-type cuprates

Ya G. Ponomarev, V. A. Alyoshin, E. V. Antipov, T. E. Oskina, A. Krapf, S. V. Kulbachinskii, M. G. Mikheev, M. V. Sudakova, S. N. Tchesnokov, L. M. Fisher

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Andreev and tunneling spectroscopy studies of Bi2Sr2Can − 1CunO2n + 4 + δ, HgBa2Can − 1CunO2n + 2 + δ and Tl2Ba2Can − 1Cu2n + 4 + δ have shown that superconductivity in single-layer (n = 1) and two-layer (n = 2) phases has a single-gap character. Qualitatively different results were obtained for three-layer phases. In doped p-type Hg-1223, Bi-2223, and Tl-2223 samples two (or three) superconducting gaps were observed. The existence of multigap superconductivity in superconducting cuprates with n ≥ 3 is explained by a difference in doping levels of outer (OP) and internal (IP) CuO2 planes.

Original languageEnglish
Pages (from-to)126-132
Number of pages7
JournalJETP Letters
Volume100
Issue number2
DOIs
Publication statusPublished - 1 Sep 2014
Externally publishedYes

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