Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2022. №12
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DOI: https://doi.org/10.30898/1684-1719.2022.12.4

 

Influence of YBaCuO Josephson Junction Parameters ON THE CHARACTERISTICS OF BROADBAND DETECTION

 

E.A. Matrozova1,2, D.V. Masterov1, S.A. Pavlov1, A.E. Parafin1, L.S. Revin1,2

 

1 Institute for Physics of Microstructures of RAS, 603087, GSP-105, Nizhny Novgorod, Russia

2 Superconducting Nanoelectronics Laboratory, Nizhny Novgorod State Technical University, n.a. R.E. Alekseev, 24 Minina street, Nizhny Novgorod, Russia

 

The paper was received December 13, 2022

 

Abstract. For Josephson bicrystal YBaCuO junctions 3–1.5 µm in size, the response to an external signal with a frequency of 165 GHz was measured. Receivers with similar ICRN values at helium temperatures and different RN values were chosen for the study. The amplitudes of the Shapiro steps were measured for various external signal powers and sample temperatures. The dependence of the output voltage noise on the operating point, temperature, and external signal power was measured. It is shown that fluctuations of the critical current have the greatest influence on the output noise of the receiver. The volt-watt responsivity and noise-equivalent power were evaluated for a 165 GHz external signal. The experimental results are compared with numerical calculations based on the model of a resistive-capacitive shunted Josephson junction. Optimal temperature operating ranges for the use of each structure were shown.

Key words: YBaCuO Josephson junction, grain boundary, broadband detector, responsivity, RCSJ model.

Financing: The work was supported by the Russian Science Foundation (Project No. 20-79-10384).

Corresponding author: Revin Leonid Sergeevich, rls@ipmras.ru

References

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For citation:

Matrozova E.A., Masterov D.V., Pavlov S.A., Parafin1 A.E., Revin L.S. Influence of YBaCuO josephson junction parameters on the characteristics of broadband detection. Zhurnal radioelektroniki [Journal of Radio Electronics] [online]. 2022. №12. https://doi.org/10.30898/1684-1719.2022.12.4 (In Russian)