Progress in Superconductivity

The Korean Superconductivity Society (한국초전도학회)
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Coherent motion of fluxons in stacked intrinsic Josephson junctions of $Bi_2$$Sr_2$Ca$Cu_2$$O_{8+x}$ single crystals

$Bi_2Sr_2CaCu_2O_{8+x}$ 단결정 선천성 조셉슨 접합에서의 플럭손 결맞음 운동

  • Doh, Yong-Joo (Department of Physics, Pohang University of Science and Technology) ;
  • Chang, Hyun-Sik (Department of Physics, Pohang University of Science and Technology) ;
  • Chang, Dong-In (Department of Physics, Pohang University of Science and Technology) ;
  • Lee, Hu-Jong (Department of Physics, Pohang University of Science and Technology) ;
  • Kim, Jinhee (Korea Research Institute of Standards and Science) ;
  • Kim, Kyu-Tae (Korea Research Institute of Standards and Science) ;
  • Lee, Woo (Seoul National University) ;
  • Choy, Jin-Ho (Seoul National University)
  • Published : 2001.01.01
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Abstract

We studied the flux-flow current-voltage characteristics of microwave-generated fluxons formed in serially stacked intrinsic Josephson junctions fabricated on$ HgI_2$-intercalated $Bi_2$$Sr_2$$CaCu_2$O/8+x/(Bi2212) single crystals. With increasing the irradiation power of 73$\square$76 GHz microwave, the supercurrent branch became resistive and split into multiple sub -branches. Each sub-branch represented a specific mode of collective motion of Josephson fluxons. We also observed similar branch splitting In a mesa prepared on an underdoped Bi2212 single crystal in a static magnetic field.

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