期刊
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
卷 469, 期 4, 页码 177-181出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physc.2009.01.009
关键词
T(c) map; Vertex correction; Eliashberg-Nambu theory
资金
- Hefei institutes of Physical Sciences
- Knowledge Innovation Program of Chinese Academy of Sciences
- National Science Foundation of China
Using the Eliashberg strong-coupling theory with vertex correction, we calculate maps of transition temperatures (T(c)) of electron-phonon superconductors in full parameter space. The maximums of transition temperatures for superconductors are predicted based on the maps and the criterion of instability of superconductivity. The strong vertex correction and high transition-temperature are tightly correlated in superconductors. We predict that the maximum of T(c) of new iron-based superconductors will be close to 90 (K). (C) 2009 Elsevier B.V. All rights reserved.
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