d4e69413cbccd6594a68fc015b65884f pmc_29385699.pdf 1a2867f44e54ad3eabaff42451960b6dc60cf79c pmc_29385699.pdf 8bc862f62b4a244aa9a4b7a6fcf7a5a32ffbed421a3edc5341cfea69455b2faf pmc_29385699.pdf Title: Vortex Lattice Instabilities in YBa2Cu3O7-x Nanowires Subject: High-resolution focused ion beam lithography has been used to fabricate YBa2Cu3O7-x (YBCO) wires with nanometric lateral dimensions. In the present work, we investigate Flux-flow instabilities in nanowires of different widths, showing sudden voltage switching jumps from the superconducting to the normal state. We present an extensive study on the temperature and field dependence of the switching characteristics which reveal that voltage jumps become less abrupt as the temperature increases, and disappear at the vortex-liquid state. On the contrary, the current distribution at the critical point becomes narrower at high temperatures. Sharp voltage switchings very close to the critical current density can be obtained by reducing the width of the nanowires, making them very appealing for practical applications. Keywords: high-temperature superconducting nanowires; flux-flow instabilities; critical vortex velocity; switching voltage jumps; single-photon detectors Author: Víctor Rouco, Davide Massarotti, Daniela Stornaiuolo, Gian Paolo Papari, Xavier Obradors, Teresa Puig, Francesco Tafuri and Anna Palau Creator: LaTeX with hyperref package Producer: pdfTeX-1.40.15 CreationDate: Tue Jan 30 09:08:41 2018 CET ModDate: Tue Jan 30 09:08:41 2018 CET Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 10 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 4103379 bytes Optimized: no PDF version: 1.5 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- UGTDPA+URWPalladioL-Ital Type 1 Custom yes yes no 48 0 ZYYTVG+URWPalladioL-Bold Type 1 Custom yes yes no 49 0 WLENKM+VnURWPalladioL-Bold Type 1 Custom yes yes no 50 0 BTZMNB+URWPalladioL-Roma Type 1 Custom yes yes no 51 0 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