The estimation of coherence length for electron-doped superconductor Nd₂₋xCexCuO₄₊δ

The estimation of coherence length for electron-doped superconductor Nd₂₋xCexCuO₄₊δ

Charikova, T.B. ; Harus, G.I. ; Shelushinina, N.G. ; Sochinskaya, O.E. ; Ivanov, A.A.

Тема: Сверхпроводимость, в том числе высокотемпературная

Інший ID: PACS: 74.25.F–, 74.72.–h

URI: http://dspace.nbuv.gov.ua/handle/123456789/118527

Посилання: The estimation of coherence length for electron-doped superconductor Nd₂₋xCexCuO₄₊δ / T.B. Charikova, G.I. Harus, N.G. Shelushinina, O.E. Sochinskaya, A.A. Ivanov // Физика низких температур. — 2011. — Т. 37, № 4. — С. 377–379. — Бібліогр.: 9 назв. — англ.

Підтримка: We are grateful to V.N. Neverov for experimental support. This work was done within RAS Programm (project N 01.2.006.13394).

Дата: 2011

Завантажень: 219

The estimation of coherence length for electron-doped superconductor Nd₂₋xCexCuO₄₊δ

Анотація:

Results of low-temperature upper critical field measurements for Nd₂₋xCexCuO₄₊δ single crystals with various x and nonstoichiometric disorder (δ) are presented. The coherence length of pair correlation ξ and the product kFξ , where kF is the Fermi wave vector, are estimated. It is shown that for investigated single crystals parameter kFξ ≅ 100 and thus phenomenologically NdCeCuO-system is in a range of Cooper-pair-based (BCS) superconductivity.

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