並列摘要
A model of superconductivity in layered high-temperature superconducting cuprates is proposed, based on the extended saddle point singularities in the electron spectrum, weak screening of the Coulomb interaction and phonon-mediated interaction between electrons plus a small short -range repulsion of Hund's or spin-fluctuation origin. This permits to explain the large values of Tc features of the isotope effect, pho:oemission results for the gap and the seemingly conflicting results of Josephson experiments in various geometries.The influence of impurity scattering on Tc, the order parameter at T = 0 and the density of states, including the energy gap, are studied for the same model. It is shown'that the suppression of the gap in the vicinities of the singularities is weak, and the same is true for Tc. Since the order parameter beyond the singularity is still defined by its value in the singular region, it scales with this value and varies only slightly. However, the energy gap in this region, which does not coincide with the order parameter, varies rapidly with impurity concentration, and the gap becomes isotropic in the strong scattering limit. These conclusions agree with preliminary experimental observations.
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延伸閱讀
- Li, W. (2020). The Analysis and Experiment of the 1st-order Integrator. International Core Journal of Engineering, 6(9), 236-239. https://doi.org/10.6919/ICJE.202009_6(9).0029
- 洪鷺華、黃經綸、何英礎（1990）。Preparation of PZT and PLZT Powders。鑛冶：中國鑛冶工程學會會刊，34(3)，51-61。https://doi.org/10.30069/MM.199009_34(3).0004
- Chen, P., Lin, H. C., & Yang, L. J. (1994). Further Development of AIDC High Order Panel Method. 中國航空太空學會學刊, 26(1), 33-41. https://doi.org/10.6124/TAASRC.199403_26(1).04
- 鄭姬真（2014）。The New Fantastic Paradise〔碩士論文，國立臺北藝術大學〕。華藝線上圖書館。https://doi.org/10.6835/TNUA.2014.00224
- 游舜宇（2010）。Operation parameters of a purifier on the CO conversion characteristics〔碩士論文，崑山科技大學〕。華藝線上圖書館。https://doi.org/10.6828/KSU.2010.00051