IEICE TRANSACTIONS on Electronics
Critical Current of Intrinsic Josephson Junctions in Co/Au/BSCCO/Au/Co Hybrid Structure
Summary :
We have investigated the influence of the ferromagnet magnetization on the transport properties of intrinsic Josephson junctions in Co/Au/BSCCO/Au/Co hybrid structure under applied magnetic fields. The current-voltage characteristic at 77K in a zero-field showed the multiple quasiparticle branches with hysteresis similar to that of conventional intrinsic Josephson junctions. On the other hand, it was observed that the critical current shows a clear asymmetric field dependence with respect to the direction of the field sweep, resulting in hysteretic behavior. By comparing the field dependence of critical current with magnetization curve of the sample, we found that the critical current is strongly suppressed in the antiparallel configuration of the relative magnetization orientation of two Co layers due to the accumulation of spin-polarized quasiparticles in intrinsic Josephson junctions. The observed suppression of the critical current is as large as more than 20%.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E101-C No.5 pp.391-395
- Publication Date
- 2018/05/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.E101.C.391
- Type of Manuscript
- Special Section PAPER (Special Section on Innovative Superconducting Devices Based on New Physical Phenomena)
- Category
Authors
Kenichiro MURATA
Utsunomiya University
Kazuhiro YAMAKI
Utsunomiya University
Akinobu IRIE
Utsunomiya University
Keyword
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Kenichiro MURATA, Kazuhiro YAMAKI, Akinobu IRIE, "Critical Current of Intrinsic Josephson Junctions in Co/Au/BSCCO/Au/Co Hybrid Structure" in IEICE TRANSACTIONS on Electronics,
vol. E101-C, no. 5, pp. 391-395, May 2018, doi: 10.1587/transele.E101.C.391.
Abstract: We have investigated the influence of the ferromagnet magnetization on the transport properties of intrinsic Josephson junctions in Co/Au/BSCCO/Au/Co hybrid structure under applied magnetic fields. The current-voltage characteristic at 77K in a zero-field showed the multiple quasiparticle branches with hysteresis similar to that of conventional intrinsic Josephson junctions. On the other hand, it was observed that the critical current shows a clear asymmetric field dependence with respect to the direction of the field sweep, resulting in hysteretic behavior. By comparing the field dependence of critical current with magnetization curve of the sample, we found that the critical current is strongly suppressed in the antiparallel configuration of the relative magnetization orientation of two Co layers due to the accumulation of spin-polarized quasiparticles in intrinsic Josephson junctions. The observed suppression of the critical current is as large as more than 20%.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E101.C.391/_p
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@ARTICLE{e101-c_5_391,
author={Kenichiro MURATA, Kazuhiro YAMAKI, Akinobu IRIE, },
journal={IEICE TRANSACTIONS on Electronics},
title={Critical Current of Intrinsic Josephson Junctions in Co/Au/BSCCO/Au/Co Hybrid Structure},
year={2018},
volume={E101-C},
number={5},
pages={391-395},
abstract={We have investigated the influence of the ferromagnet magnetization on the transport properties of intrinsic Josephson junctions in Co/Au/BSCCO/Au/Co hybrid structure under applied magnetic fields. The current-voltage characteristic at 77K in a zero-field showed the multiple quasiparticle branches with hysteresis similar to that of conventional intrinsic Josephson junctions. On the other hand, it was observed that the critical current shows a clear asymmetric field dependence with respect to the direction of the field sweep, resulting in hysteretic behavior. By comparing the field dependence of critical current with magnetization curve of the sample, we found that the critical current is strongly suppressed in the antiparallel configuration of the relative magnetization orientation of two Co layers due to the accumulation of spin-polarized quasiparticles in intrinsic Josephson junctions. The observed suppression of the critical current is as large as more than 20%.},
keywords={},
doi={10.1587/transele.E101.C.391},
ISSN={1745-1353},
month={May},}
Copy
TY - JOUR
TI - Critical Current of Intrinsic Josephson Junctions in Co/Au/BSCCO/Au/Co Hybrid Structure
T2 - IEICE TRANSACTIONS on Electronics
SP - 391
EP - 395
AU - Kenichiro MURATA
AU - Kazuhiro YAMAKI
AU - Akinobu IRIE
PY - 2018
DO - 10.1587/transele.E101.C.391
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E101-C
IS - 5
JA - IEICE TRANSACTIONS on Electronics
Y1 - May 2018
AB - We have investigated the influence of the ferromagnet magnetization on the transport properties of intrinsic Josephson junctions in Co/Au/BSCCO/Au/Co hybrid structure under applied magnetic fields. The current-voltage characteristic at 77K in a zero-field showed the multiple quasiparticle branches with hysteresis similar to that of conventional intrinsic Josephson junctions. On the other hand, it was observed that the critical current shows a clear asymmetric field dependence with respect to the direction of the field sweep, resulting in hysteretic behavior. By comparing the field dependence of critical current with magnetization curve of the sample, we found that the critical current is strongly suppressed in the antiparallel configuration of the relative magnetization orientation of two Co layers due to the accumulation of spin-polarized quasiparticles in intrinsic Josephson junctions. The observed suppression of the critical current is as large as more than 20%.
ER -
English
