2006/08/24 by Ion C. Moraru, W. P. Pratt, W. P. Pratt, Jr. +1 · 68 citations
Materials Science · Physics and Astronomy · #Antiparallel (mathematics) #Condensed matter physics #Ferromagnetism #Magnetic and transport properties of perovskites and related materials #Magnetic field #Magnetic properties of thin films #Magnetization #Materials science #Permalloy #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Superconductivity #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.74.220507
published in Physical Review B 74(22) (American Physical Society) · 4 pages, 4 figures, submitted to Phys. Rev. B
arxiv created 2006/08/24 · openalex publication_date 2006/12/08 · arxiv updated 2012/08/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We have measured the superconducting transition temperature Tc of ferromagnet/superconductor/ferromagnet trilayers using Permalloy (Py=Ni84Fe16) as a strongly polarized ferromagnetic material. For a parallel (P) or antiparallel (AP) alignment of the magnetization directions of the outer ferromagnets, we observe a Tc difference as large as 20\phantom\rule0.3em0exmK, with a stronger suppression of superconductivity in the P state than in the AP state. This behavior is opposite to the recent observations of Rusanov et al. [Phys. Rev. B 73, 060505 (2006)] in Py/Nb/Py trilayers, but is consistent with earlier results on trilayers with Ni or CuNi alloy as the ferromagnetic material.