XXIX Symposium "Nanophysics and Nanoelectronics" in Nizhny Novgorod, March 10-14, 2025
Physics of nanostructures

SQIF magnetometer for navigation systems: experimental and theoretical study of base cells

G. S. Khismatullin^ab, N. V. Kolotinskii^c, M. M. Khrenov^abd, A. S. Ionin^b, M. Yu. Fominskii^d, L. V. Filippenko^d, I. I. Soloviev^ad, N. V. Klenov<sup>c

a</sup> Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics
^b Russian Quantum Center, Skolkovo, Moscow
^c Lomonosov Moscow State University, Faculty of Physics
^d Kotelnikov Institute of Radioengineering and Electronics of the Russian Academy of Sciences, Moscow

Abstract: The article is devoted to the development of a magnetometer to improve the accuracy of inertial navigation systems with superconducting gyroscopes. To minimize signal reading errors, a magnetometer design based on a chain of sequentially connected two-junction variable area interferometers (SQIF) is proposed, which solves the problem of dynamic range and “zero” determination by magnetic field. The experimental part of the work includes the design and fabrication of test samples of interferometers, measurement of their static and dynamic characteristics, including voltage-flux dependencies. Numerical and analytical approaches have been developed to analyze the characteristics of the manufactured structures in order to adequately interpret the data obtained and improve the technology. The obtained results confirm the promising nature of the selected approaches and the high potential of the proposed theoretical methods for the analysis of the peculiarities of macroscopic quantum interference.

Keywords: Josephson effect, two-contact interferometer, SQIF, gyroscope.

Received: 05.05.2025
Revised: 05.05.2025
Accepted: 05.05.2025

DOI: 10.61011/JTF.2025.09.61239.99-25

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