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Oh, Yoon Seok
Strong Correlation in Quantum Materials Lab
Research Interests
  • Materials for Quantum Information Processing, Transport, and Storage
  • Quantum Magnet
  • Multiferroic

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Josephson effect between electron-doped and hole-doped iron pnictide single crystals

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Title
Josephson effect between electron-doped and hole-doped iron pnictide single crystals
Author
Zhang, XiaohangSaha, Shanta R.Butch, Nicholas P.Kirshenbaum, KevinPaglione, JohnpierreGreene, Richard L.Liu, YongYan, LiqinOh, Yoon SeokKim, Kee HoonTakeuchi, Ichiro
Keywords
barium compounds; bicrystals; cobalt compounds; critical currents; doping profiles; high-frequency effects; high-temperature superconductors; iron compounds; Josephson effect; magnetic field effects; potassium compounds; strontium compounds
Issue Date
2009-08
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.95, no.6, pp.062510 -
Abstract
We have observed the Josephson effect in junctions formed between single crystals of SrFe1.74Co0.26As2 and Ba0.23K0.77Fe2As2. The ac Josephson effect was observed under microwave irradiation in the I-V characteristics. By applying an in-plane magnetic field, the critical current is completely modulated and shows a relatively symmetric diffraction pattern consistent with the intermediate junction limit. The observation of the Josephson effect in the p-n bicrystal structure not only has significant implications for designing phase-sensitive junctions to probe the pairing symmetry of iron pnictide superconductors, but also represents an important step in developing all iron pnictide devices for applications.
URI
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DOI
10.1063/1.3205123
ISSN
0003-6951
Appears in Collections:
PHY_Journal Papers
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