Collaboration yields promising material for quantum computing

Phys.org  September 16, 2020
A one-dimensional topological superconductor with Majorana states bound to its ends can be realized by coupling a semiconductor nanowire to a superconductor in the presence of a strong magnetic field. However, the applied magnetic fields are detrimental to superconductivity, and constrain device layout, components, materials, fabrication, and operation. Using a ferromagnetic insulator instead of an applied field was theoretically proposed. Researchers in Denmark report transport measurements in hybrid nanowires using epitaxial layers of superconducting Al and the ferromagnetic insulator EuS on semiconducting InAs nanowires. They infer a remanent effective Zeeman field exceeding 1 T and observe stable zero-bias conductance peaks in bias spectroscopy at zero applied field, consistent with topological superconductivity…read more. TECHNICAL ARTICLE 

Graphic showing the three materials combined to form the new material… Credit: University of Copenhagen

Posted in Quantum computing and tagged , .

Leave a Reply