Collective Josephson vortex dynamics in a finite number of stacked intrinsic Josephson junctions
SCIE
SCOPUS
- Title
- Collective Josephson vortex dynamics in a finite number of stacked intrinsic Josephson junctions
- Authors
- Bae, MH; Choi, JH; Lee, HJ
- Date Issued
- 2007-06
- Publisher
- AMERICAN PHYSICAL SOC
- Abstract
- We report the experimental confirmation of the collective transverse plasma modes excited by the Josephson vortex lattice in stacks of intrinsic Josephson junctions in Bi2Sr2CaCu2O8+x single crystals. The excitation was confirmed by analyzing the temperature (T) and magnetic-field (H) dependencies of the multiple sub-branches in the Josephson vortex-flow region of the current-voltage characteristics of the system. In the near-static Josephson vortex state for a low tunneling bias current, pronounced magnetoresistance oscillations were observed, which represented a triangular-lattice vortex configuration along the c axis. In the dynamic vortex state in a sufficiently high magnetic field and for a high-bias current, splitting of a single Josephson vortex-flow branch into multiple sub-branches was observed. Detailed examination of the sub-branches for varying H field reveals that sub-branches represent the different modes of the Josephson vortex lattice along the c axis, with varied configuration from a triangular to a rectangular lattice. These multiple sub-branches merge to a single curve at a characteristic temperature, above which no dynamical structural transitions of the Josephson vortex lattice is expected.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12175
- DOI
- 10.1103/PhysRevB.75.214502
- ISSN
- 1098-0121
- Article Type
- Article
- Citation
- PHYSICAL REVIEW B, vol. 75, no. 21, page. 214502 - 214502, 2007-06
- Files in This Item:
-
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.