Evidence for a common high-temperature superconducting effect in La1.85Sr0.15CuO4 and YBa2Cu3O7

Y. C. Jean, J. Kyle, H. Nakanishi, P. E.A. Turchi, R. H. Howell, A. L. Wachs, M. J. Fluss, R. L. Meng, H. P. Hor, J. Z. Huang, C. W. Chu

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81 引文 斯高帕斯(Scopus)

摘要

We report the positron-annihilation lifetime and Doppler-broadening energy spectra in La1.85Sr0.15CuO4 superconductors for 10<T<297 K. A strong temperature dependence in positron lifetime and momentum distribution parameters is observed for positron-electron annihilation data while the sample is in the superconducting state, but not while it is in the normal state. We show experimental evidence that the superconducting mechanisms in La1.85Sr0.15CuO4 and YBa2Cu3O7 are similar and suggest that this is a consequence of a common physics involving the delicate balance between localized and itinerant-electron behavior.

原文English
頁(從 - 到)1069-1072
頁數4
期刊Physical review letters
60
發行號11
DOIs
出版狀態Published - 1988

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)

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