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Possibility of Excitonic Superconductivity
Abstract The purpose of this talk is to review the present status of the theory of the possibility of getting an effective attraction between electrons by means of virtual electronic excitation in such a way as to enhance the phonon contribution and thus the superconducting transition temperature, Tc. This is an old idea that has been discussed for many years by Little, Ginzburg and others, but as yet there is no experimental evidence that it actually occurs. Two or three years ago, A1lender, Bray and I (ABB) [1] proposed a study of a single interface between a very thin metallic film on a semiconductor substrate. The purpose was to try to observe the effect under rather ideal conditions, not to get a high Tc. If an effect were observed, one could possibly make use of the excitonic mechanism in composite materials which have very thin alternating layers of metal and semiconductor. In suitable metals, there may be an intrinsic low-lying electronic excitation that could be used.
Possibility of Excitonic Superconductivity
Abstract The purpose of this talk is to review the present status of the theory of the possibility of getting an effective attraction between electrons by means of virtual electronic excitation in such a way as to enhance the phonon contribution and thus the superconducting transition temperature, Tc. This is an old idea that has been discussed for many years by Little, Ginzburg and others, but as yet there is no experimental evidence that it actually occurs. Two or three years ago, A1lender, Bray and I (ABB) [1] proposed a study of a single interface between a very thin metallic film on a semiconductor substrate. The purpose was to try to observe the effect under rather ideal conditions, not to get a high Tc. If an effect were observed, one could possibly make use of the excitonic mechanism in composite materials which have very thin alternating layers of metal and semiconductor. In suitable metals, there may be an intrinsic low-lying electronic excitation that could be used.
Possibility of Excitonic Superconductivity
Bardeen, John (author)
1976-01-01
5 pages
Article/Chapter (Book)
Electronic Resource
English
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