[{"type":"article-journal","title":"Critical current fluctuations in graphene Josephson junctions","issued":{"date-parts":[["2021"]]},"volume":"11","issue":"1","page":"Art.Nr. 19900","container-title":"Scientific Reports","DOI":"10.1038\/s41598-021-99398-3","author":[{"family":"Haque","given":"M. T."},{"family":"Will","given":"M."},{"family":"Tomi","given":"M."},{"family":"Pandey","given":"P."},{"family":"Kumar","given":"M."},{"family":"Schmidt","given":"F."},{"family":"Watanabe","given":"K."},{"family":"Taniguchi","given":"T."},{"family":"Danneau","given":"R."},{"family":"Steele","given":"G."},{"family":"Hakonen","given":"P."}],"publisher":"Nature Research","ISSN":"2045-2322","abstract":"We have studied 1\/f noise in critical current I$_{c}$ in h-BN encapsulated monolayer graphene contacted by NbTiN electrodes. The sample is close to diffusive limit and the switching supercurrent with hysteresis at Dirac point amounts to \u22435 nA. The low frequency noise in the superconducting state is measured by tracking the variation in magnitude and phase of a reflection carrier signal v$_{rf}$ at 600\u2013650 MHz. We find 1\/f critical current fluctuations on the order of \u03b4I$_{c}$\/I$_{c}$\u224310$^{-3}$ per unit band at 1 Hz. The noise power spectrum of critical current fluctuations SI$_{c}$ measured near the Dirac point at large, sub-critical rf-carrier amplitudes obeys the law SI$_{c}$\/I$_{c}$$^{2}$=a\/f$^{\u00df}$ where a\u22434\u00d710$^{-6}$ and \u03b2\u22431 at f>0.1 Hz. Our results point towards significant fluctuations in I$^{c}$ originating from variation of the proximity induced gap in the graphene junction.","kit-publication-id":"1000139165"}]