mriselMagnetic Resonance in SolidsMagnetic Resonance in Solids2072-5981Kazan Federal Universitymrisel-193Research ArticleСтатьиBinding energy of a Cooper pairs with non-zero center of mass momentum in d-wave superconductorsEreminM. V.

Kremlevskaya, 18, Kazan 420008

LyubinI. E.

Kremlevskaya, 18, Kazan 420008

igor606@rambler.ruKazan State UniversityRussian Federation20072001202491712Copyright © Eremin M.V., Lyubin I.E., 20242024Eremin M.V., Lyubin I.E.Eremin M.V., Lyubin I.E.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.mrsej.ru/jour/article/view/193

The binding energy of Cooper pairs has been calculated for the case of d-wave symmetry of the superconducting gap in layered cuprate superconductors. We assume that Cooper pairs are formed by the short range potential and then derive the binding energy in the form Δ𝒌𝒒 =Δ𝑥(𝒒)cos𝑘𝑥 𝑎 +Δ𝑦 (𝒒)cos𝑘𝑦 𝑎 +Ω𝑥(𝒒)sin𝑘𝑥𝑎 +Ω𝑦(𝒒)sin𝑘𝑦𝑎 , where 𝒒 is a total momentum of the pair. Numerical solutions of the self-consistent system of the integral equations for quantities Δ𝑥 (𝒒) , Δ𝑦 (𝒒) and Ω𝑥(𝒒), Ω𝑦 (𝒒) along different lines in 𝑞𝑥, 𝑞𝑦 plane have been obtained. Anisotropy of the depairing total momentum (or depairing current) has been calculated.

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The authors declare that there are no conflicts of interest present.