Three-Dimensional Superconducting Nanohelices Grown by He+-Focused-Ion-Beam Direct Writing.

Three Dimensional SuperconductingThree-Dimensional Superconducting Nanohelices Grown by He+-Focused-Ion-Beam Direct Writing.
R. Cordoba, D. Mailly, R. Rezaev, et al.

Nano Letters, (2019).