Effect of DC current injection on AC supercurrent carrying ability of ring shaped HTS thin films

Nurgaliev, T.; Mateev, E.; Blagoev, B.; Neshkov, L.; Nedkov, I.; Uspenskaya, L. S.

doi:10.1016/j.physc.2011.07.003

Cited by 3 publications

(1 citation statement)

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“…It was shown that thickness of both HTS and FM films influences the critical temperature of the HTS film in HTS/FM bi-or multilayers [2][3][4][5]. An injection of charge carriers from the LSMO or LCMO into YBCO in the above structures can affect their critical temperature, critical current density and microwave impedance [6][7][8][9]. A presence of a contact with the FM layer and an injection of the spin-polarized quasiparticles from FM to HTS can induce a non-uniform distribution of the superconducting charge carriers across the thickness of the HTS film.…”

Section: Introductionmentioning

confidence: 99%

A Simple Model for Investigation of the Pair Breaking Effect on the Parameters of HTS/FM Thin Films

Nurgaliev

Uspenskaya

2015

SSP

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A simple model was proposed for description of Cooper pair breaking effect (which is caused by transfer of spin-polarized carriers from the ferromagnetic (FM) manganite into the high temperature superconductor (HTS)) on the critical temperature and the microwave surface impedance of HTS/FM heterostructures. The model is based on the assumption on an exponential dependence of the Cooper pairs concentration (as well as number of the holes in CuO2 planes, responsible for the superconductivity) on the distance from HTS/FM interface. The model fits well the thickness dependence of HTS film parameters and is used for evaluation of the penetration depth of spin-polarized particles into HTS in the HTS/FM structures.

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