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تسجيل مستخدم جديدSuperconducting epitaxial YBa2Cu3O7-{delta} on SrTiO3 buffered Si (001)
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Thin films of optimally-doped (001)-oriented YBa2Cu3O7-{delta} are epitaxially integrated on silicon (001) through growth on a single crystalline SrTiO3 buffer. The former is grown using pulsed-laser deposition and the latter is grown on Si using oxide molecular beam epitaxy. The single crystal nature of the SrTiO3 buffer enables high quality YBa2Cu3O7-{delta} films exhibiting high transition temperatures to be integrated on Si. For a 30 nm thick SrTiO3 buffer, 50 nm thick YBa2Cu3O7-{delta} films that exhibit a transition temperature of ~ 93 K, and a narrow transition width (< 5 K) are achieved. The integration of single crystalline YBa2Cu3O7-{delta} on Si (001) paves the way for the potential exploration of cuprate materials in a variety of applications.
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Using spin polarized neutron reflectivity experiments, we demonstrate an unusual proximity behaviour when the superconductor (SC) and the ferromagnet (FM) are coupled through an insulator (I) in YBa2Cu3O7-{delta} (SC)/SrTiO3 (I)/La0.67Sr0.33MnO3 (FM)
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