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Response: Magnon-Exchange Pairing and Superconductivity

Chen, Guanhua and Langlois, Jean Marc and Guo, Yubjin and Goddard, William A., III (1989) Response: Magnon-Exchange Pairing and Superconductivity. Science, 243 (4890). pp. 547-548. ISSN 0036-8075. doi:10.1126/science.243.4890.547-a.

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A recent suggestion by G. Chen and W. A. Goddard (1) for electron pairing in high temperature superconducting oxides reintroduced the concept of magnon exchange as a replacement for the standard Bardeen-Cooper-Schrieffer (BCS) phonon exchange (2). This suggestion received considerable attention because [on the basis of microscopic calculations (1, 3) for small clusters] it provided precise estimates of the various superconducting transition temperatures T_c in the cuprate ceramics and calculated an upper bound T^(max)_c = 232 K. We show that, within the Chen-Goddard mechanism, the estimates of T_c are incorrect because Chen and Goddard use an equation for T_c appropriate only for weak coupling and that their T^(max)_c is spurious, as there is no upper bound when the correct expression is used.

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Goddard, William A., III0000-0003-0097-5716
Alternate Title:Magnon-Exchange Pairing and Superconductivity
Additional Information:© 1989 American Association for the Advancement of Science. 31 October 1988; revised 3 January 1989; accepted 9 January 1989. The J in this paper is defined to be twice as big as in our convention.
Issue or Number:4890
Record Number:CaltechAUTHORS:20161219-110549551
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Official Citation:Response: Magnon-Exchange Pairing and Superconductivity By GUANHUA CHEN, JEAN-MARC LANGLOIS, YUEJIN GUO, WILLIAM A. GODDARD III Science 27 Jan 1989 : 547-548
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:72940
Deposited By: Ruth Sustaita
Deposited On:19 Dec 2016 19:37
Last Modified:11 Nov 2021 05:09

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