Mathematical Model for Transitional Processes in Josephson Cryotrons Based on Tunnel Junctions

作者：Partyka A^*; Tyhanskyj M

来源：Journal of Superconductivity and Novel Magnetism, 2011, 24(5): 1513-1519.

DOI：10.1007/s10948-010-0925-3

• Josephson cryotron
• Information transformer
• Quantum memory cells
• Transitional characteristics
• Logical transition

In this work, we consider controlling of logical states of Josephson memory cells (cryotrons) based on superconductor-insulator-superconductor (SIS) Josephson tunnel junctions by external current impulses. A mathematical model for the transitional processes that take place during direct logical transitions "0" -> "1" and inverse logical transitions "1" -> "0" is proposed. By means of mathematical modeling, we investigate transitional processes in cryotrons during the change of their logical state and obtain their transitional characteristics for operational temperatures T (1)=11.6 K and T (2)=81.2 K, close to the boiling temperatures of helium and nitrogen, respectively. It is shown that such memory cells can efficiently operate under the temperature T (2)=81.2 K. The behavior of the Josephson cryotrons as well as their operational stability is explored.

• 出版日期2011-7