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The collective excitations in CuO2 planes of HTSC under d-pairing

✍ Scribed by P.N. Brusov; N.P. Brusova

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
139 KB
Volume
235-240
Category
Article
ISSN
0921-4534

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✦ Synopsis

Using the two-dimensional model of d-pairing for HTSC created by us recently by path integration technique, we calculate the collective mode spectrum for all superconductive states of Cu02 planes arisen in symmetry classification. The number of degrees of freedom of order parameter, which is equal to four (comlex two-component vector) in case of d-pairing in 2D superconductor, corresponds to the number of collective modes in each superconductive phase. The spectrum could be used for identification of superconductive states of CuO2 planes (or HTSC) by sound and microwave absorption experiments.

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The spectroscopy of collective modes in
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A model for HTSC is considered where electrons in the CuO2 planes belong to two separate groups: (a) those localized on Cu atoms with single occupation due to a large Coulomb interaction; and (b) conduction electrons in bands formed from p states of oxygens with direct oxygen-oxygen overlap. A tight