Negative Magnetoresistance in Amorphous Indium Oxide Wires

Sreemanta Mitra*, Girish C. Tewari, Diana Mahalu, Dan Shahar

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

We study magneto-transport properties of several amorphous Indium oxide nanowires of different widths. The wires show superconducting transition at zero magnetic field, but, there exist a finite resistance at the lowest temperature. The R(T) broadening was explained by available phase slip models. At low field, and far below the superconducting critical temperature, the wires with diameter equal to or less than 100 nm, show negative magnetoresistance (nMR). The magnitude of nMR and the crossover field are found to be dependent on both temperature and the cross-sectional area. We find that this intriguing behavior originates from the interplay between two field dependent contributions.

Original languageEnglish
Article number37687
Number of pages9
JournalScientific Reports
Volume6
DOIs
Publication statusPublished - 23 Nov 2016
MoE publication typeA1 Journal article-refereed

Keywords

  • ONE-DIMENSIONAL SUPERCONDUCTOR
  • WEAK-LOCALIZATION
  • MAGNETIC-FIELD
  • TRANSITION
  • NANOWIRES
  • INSULATOR
  • STATE
  • FILMS
  • PB

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