Superconducting junctions utilizing a binary semiconductor barrier
AssigneeBell Telephone Laboratories, Incorporated
InventorsEvelyn L. Hu, Lawrence D. Jackel
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Abstract
Superconductor junctions adaptable for applications such as logic circuitry and magnetic flux detection are disclosed. These junctions utilize superconducting electrodes with a semiconductor barrier composed of a binary composition of germanium and tin. The composition of this binary composition strongly affects the electrical properties of the device. For example, when using two Sn electrodes, if the Sn/Ge ratio in the barrier is changed from 1:4 to 1:1 for a thickness of 600 A, the electrical properties of the junction transform from hysteretic to non-hysteretic characteristics.
Claims11
A Josephson junction comprising a semiconductor barrier material in intimate contact with two superconducting electrodes CHARACTERIZED IN THAT said semiconductor barrier material comprises a binary composition of Ge and Sn.
The Josephson junction of claim wherein at least one of said superconducting electrodes contains Pb.
A superconductor junction comprising a semiconductor barrier material in intimate contact with two superconducting electrodes, CHARACTERIZED IN THAT said superconducting electrodes each consist essentially of tin and said semiconductor barrier material comprises a binary composition of Ge and Sn.
A superconductor junction comprising a supporting substrate having deposited thereon in succession (1) a Sn layer, (2) binary composition of Ge and Sn, and (3) a Sn layer.
Dependencies are inferred from the claim text.