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Avradeep Pal

As seen in: Nature
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Articles

Bistable and absolute switching driven by superconducting exchange coupling - Nature Communications

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By Avradeep Pal
| Nature Verified
Abstract As per de Gennes’ predictions, a superconducting layer placed between two ferromagnetic insulators can drive an antiferromagnetic exchange coupling between them. Using two ferromagnetic insulating GdN layers having dissimilar switching fields sandwiching a superconducting Vanadium thin film, we demonstrate evidence of such exchange coupling. We demonstrate that such an exchange coupling promotes switching between zero and finite resistance states of Vanadium.
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Triplet Cooper pairs induced in diffusive s -wave superconductors inte

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By Jabir Ali Ouassou, Avradeep Pal, Mark Blamire, Matthias Eschrig
| Nature Verified
To begin with, we consider the DOS in a normal metal (N) connected to a superconductor (S) via a ferromagnetic insulator (FI), which becomes modified by the existence of triplet Cooper pairs. The FI in this setup is modelled as a spin-active interface with zero spatial extent, but a finite tunneling conductance G , spin-mixing conductance G , and spin-polarization P.
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