Resonant Oscillations of Josephson Current in Nb‐Bi <sub>2</sub> Te <sub>2.3</sub> Se <sub>0.7</sub> ‐Nb Junctions
نویسندگان
چکیده
Josephson proximity junctions and devices employing topological insulators are promising candidates for realizing superconductivity topologically protected quantum circuits. Here, the new type of oscillations critical current in ballistic Nb-Bi2Te2.3Se0.7-Nb subject to magnetic fields is reported. The appear below ≈400 mK have a very unusual sharp-peaked shape. Their ultra-short period ≈1 Oe, by orders magnitude shorter than expected periodicity due fluxoid quantization device, corresponds extremely low energy scale μ $\umu$ eV. It established that observed effect resonant transmission Andreev quasiparticles via peculiar levels forming near S-TI interfaces.
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ژورنال
عنوان ژورنال: Advanced quantum technologies
سال: 2022
ISSN: ['2511-9044']
DOI: https://doi.org/10.1002/qute.202100124