| Original Articles |
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Statistic Ensemble Theory of Small Superconducting Grains |
| CHEN Zhi-Qian1,2;ZHENG Ren-Rong2,3 |
| 1Department of Physics, Southwest China Normal University, Chongqing 400715
2Department of Physics, Suzhou University, Suzhou 215006
3Department of Physics, Shanghai Teachers’ University, Shanghai 200234
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| Cite this article: |
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CHEN Zhi-Qian, ZHENG Ren-Rong 2001 Chin. Phys. Lett. 18 592-594 |
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Abstract We apply random matrix theory to small metallic grains in different spin-states of S=0, 1/2, 1, 3/2, 2, 5/2, ..., and find that there exist theoretical critical level spacings dc at which the superconductivity would break down. We also find that the higher the spin-state, the smaller the critical level spacing, and for the state of S = 0 there actually exists the superconducting enhancement.
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| Keywords:
74.80.Bj
74.20.Fg
71.23.-k
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Published: 01 April 2001
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