Electron/hole liquids in highTcsuperconductors and easy paths for supercarriers through the vibrational lattice

March, N. H. and Matthai, Clarence Cherian 2009. Electron/hole liquids in highTcsuperconductors and easy paths for supercarriers through the vibrational lattice. Physics and Chemistry of Liquids 47 (4) , pp. 467-470. 10.1080/00319100902873037

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Abstract

In a recent study in this Journal, of manifestly BCS body-centred-cubic transition metals, we presented a picture of easy paths for the supercarriers (Cooper pairs) based on electron-lattice properties. Turning to high T c cuprates, it has been advocated for a long time that phonons play only a minor role. That point of view is challenged here by appealing first to fairly recent experiments on the oxygen isotope effects in the CuO2 planes of high T c materials and secondly to measurements on the enhancement of T c by epitaxial strain. Again, we advocate easy paths for supercarriers to travel through the vibrating lattice in a high T c family as consistent with these quite different experiments. However, these arguments apply to for such a family such that , which is the maximum T c within a family, depends importantly on anti-ferromagnetic spin fluctuations. But, we expect the variation of within such a family to correlate with easy paths for supercarriers to travel through the vibrating lattice.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Uncontrolled Keywords:	electron/hole liquids, high T c cuprates, oxygen isotope effects
Publisher:	Taylor & Francis
ISSN:	0031-9104
Last Modified:	04 Jun 2017 03:04
URI:	https://orca.cardiff.ac.uk/id/eprint/16350

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