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Reproducible High Tc Josephson junctions have been made in a rather simple two-step process using ion irradiation. A microbridge 1 to 5 micrometers wide is firstly designed by ion irradiating a c-axis-oriented YBa2Cu3O7 film through a gold…

Reproducible high-Tc Josephson junctions have been made in a rather simple two-step process using ion irradiation. A microbridge (1 to 5 ?m wide) is firstly designed by ion irradiating a c-axis-oriented YBa2Cu3O7-? film through a gold mask…

Superconductivity · Physics 2009-11-11 N. Bergeal , X. Grison , J. Lesueur , G. Faini , M. Aprili , J. P. Contour

We have studied the annealing effect in transport properties of High temperature Josephson Junctions (HTc JJ) made by ion irradiation. Low temperature annealing (80 degrees Celsius) increases the JJ transition temperature (TJ) and the Ic.Rn…

Superconductivity · Physics 2009-11-13 M. Sirena , S. Matzen , N. Bergeal , J. Lesueur , G. Faini , R. Bernard , J. Briatico

The Josephson junction (JJ) is the corner stone of superconducting electronics and quantum information processing. While the technology for fabricating low $T_{c}$ JJ is mature and delivers quantum circuits able to reach the "quantum…

Ion beam damage combined with nanoscale focused ion beam direct milling was used to create manufacturable SNS type Josephson junctions in 100 nm thick MgB$_{2}$ with T$_{C}$ of 38 K. The junctions show non-hysteretic current - voltage…

Superconductivity · Physics 2018-07-04 D. -J. Kang , N. H. Peng , R. Webb , C. Jeynes , J. H. Yun , S. H. Moon , D. Oh , G. Burnell , E. J. Tarte , D. F. Moore , M. G. Blamire

Josephson junctions manufactured to tight tolerances are necessary components for superconducting quantum computing. Developing precise manufacturing techniques for Josephson junctions requires an understanding of their make-up and robust…

Quantum Physics · Physics 2025-10-10 Oscar W. Kennedy , Kevin G. Crawford , Kowsar Shahbazi , Connor D. Shelly

A thorough understanding of the small-signal response of solar cells can reveal intrinsic device characteristics and pave the way for innovations. This study investigates the impedance of crystalline silicon PN junction devices using TCAD…

In this letter, we present the study of the high-frequency mixing properties of ion irradiated YBa2Cu3O7 Josephson nano-junctions. The frequency range, spanning above and below the characteristic frequencies fc of the junctions, permits…

Superconductivity · Physics 2012-06-11 A. Luo , T. Wolf , Y. Wang , M. Malnou , C. Ulysse , G. Faini , P. Febvre , J. Lesueur , N. Bergeal

This paper explores methods to enhance the reproducibility of Josephson junctions, crucial elements in superconducting quantum technologies, when employing the Dolan technique in 30 kV e-beam processes. The study explores the influence of…

We highlight the reproducibility and level of control over the electrical properties of YBa$_2$Cu$_3$O$_7$ Josephson junctions fabricated with irradiation from a focused helium ion beam. Specifically, we show the results of electrical…

Superconductivity · Physics 2019-06-26 Ethan Y. Cho , Hao Li , Shane A. Cybart

Various commercial coated conductors were irradiated with fast neutrons in order to introduce randomly distributed, uncorrelated defects which increase the critical current density, Jc, in a wide temperature and field range. The…

Superconductivity · Physics 2015-05-14 M. Eisterer , R. Fuger , M. Chudy , F. Hengstberger , H. W. Weber

An intermittent Josephson effect in the form of voltage and temperature oscillations in the voltage - current curves near 2 K is observed in pellets consisting of superconducting TaC nanocapsules coated with graphite. This phenomenon is…

Superconductivity · Physics 2012-01-20 Dianyu Geng , Zhenhua Wang , Da Li , Zhidong Zhang , Xiaolin Wang

Topological Josephson junctions (JJs), which contain Majorana bound states, are expected to exhibit 4$\pi$-periodic current-phase relation, thereby resulting in doubled Shapiro steps under microwave irradiation. We performed numerical…

Superconductivity · Physics 2020-12-30 Yeongmin Jang , Yong-Joo Doh

Superconducting Quantum Interference Filters (SQIFs) are arrays of superconducting loops of different sizes including Josephson Junctions (JJ). For a random distribution of sizes, they present a non-periodic response to an applied magnetic…

We designed, fabricated and tested short one dimensional arrays of masked ion-irradiated YBa$_2$Cu$_3$O$_7$ Josephson junctions (JJ) embedded into log-periodic spiral antennas. Our arrays consist of 4 or 8 junctions separated either by…

Superconductivity · Physics 2017-01-11 A. Sharafiev , M. Malnou , C. Feuillet-Palma , C. Ulysse , P. Febvre , J. Lesueur , N. Bergeal

We have used Bi$_2$Se$_3$ nanoribbons, grown by catalyst-free Physical Vapor Deposition to fabricate high quality Josephson junctions with Al superconducting electrodes. In our devices we observe a pronounced reduction of the Josephson…

The dynamics of overdamped Josephson junctions under varying microwave-driving conditions have been studied through numerical simulations using the resistively-shunted junction (RSJ) model, with a focus on primary voltage metrology…

Superconductivity · Physics 2025-08-19 Paolo Durandetto

The interaction of ionizing radiation with nanometric targets is a field of interest for many branches of science such as: radiology, oncology, radiation protection and nanoelectronics. A new experimental technique known as nanodosimetry…

Atomic Physics · Physics 2012-07-31 Aliaksandr Bantsar

We demonstrate that the supercurrent can be strongly enhanced in cross-like superconducting hybrid nanostructures (X-junctions) exposed to a temperature gradient. At temperatures T exceeding the Thouless energy of our X-junction the…

Superconductivity · Physics 2021-07-08 Mikhail S. Kalenkov , Andrei D. Zaikin

Microscopic inhomogeneity within superconducting films is a critical bottleneck hindering the performance and scalability of quantum circuits. All-nitride Josephson Junctions (JJs) have attracted substantial attention for their potential to…

Quantum Physics · Physics 2025-12-09 Prachi Garg , Danqing Wang , Hong X. Tang , Baishakhi Mazumder
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