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ferroelectric barrier 1high-temperature superconductors 1josephson junctions 1superconducting gap 1terahertz excitation 1

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cond-mat.supr-con2026

Systematic modulation of superconducting gap dynamics in YBCO|BNT|YBCO Josephson Junctions through THz field interaction and BNT ferroelectric barrier

Sukhanidhan Singh, Muthukkumaran Karthikeyan, Geoffrey Chanda +5

The paper reports that inserting a ferroelectric Bi0.5Na0.5TiO3 (BNT) barrier into YBa2Cu3O7‑x (YBCO) Josephson junctions allows the superconducting gap and critical current to be…