2011 Fiscal Year Final Research Report
Flash Memory Effect in Intrinsic Josephson Junctions
Project/Area Number |
21510137
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Microdevices/Nanodevices
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Research Institution | National Institute for Materials Science |
Principal Investigator |
HATANO Takeshi 独立行政法人物質・材料研究機構, 超伝導物性ユニット, グループリーダー (50354337)
|
Co-Investigator(Kenkyū-buntansha) |
WANG Huabing 独立行政法人物質・材料研究機構, 超伝導物性ユニット, 主幹研究員 (70421427)
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Project Period (FY) |
2009 – 2011
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Keywords | 固有ジョセフソン接合 / ジョセフソン磁束 / ロックイン現象 / 不揮発性記憶 |
Research Abstract |
We have observed a flash memory behavior in highly anisotropic Y-123(γ~35) IJJs under the near layer-parallel magnetic field. The basic concept for the memory operation is the current induced transition of flux-flow state in IJJs which can be readable by the flux-flow voltage with low current bias. By the transition, the flux-flow state can be(re)-programmed and this state "1" is proved to be non-volatile. The flux-flow state can be erased by applying the higher current and again this state "0" is kept even the current is turned off. All above operations can be understood by the hysteretic transition of vortex configurations, namely, the Josephson vortices with and without pancake vortices under near-layer-parallel magnetic field.
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[Journal Article] Coherent Terahertz Emission of Intrinsic Josephson Junction Stacks in the Hot Spot Regime2010
Author(s)
H. B. Wang, S. Guenon, B. Gross, J. Yuan, Z. G. Jiang, Y. Y. Zhong, M. Grunzweig, A. Ishii, P. H. Wu, T. Hatano, D. Koelle, and R. Kleiner
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Journal Title
Phys. Rev. Lett
Volume: 105
Pages: 057002
Peer Reviewed
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[Journal Article] Interaction of hot spots and terahertz waves in Bi2Sr2CaCu2O8 intrinsic Josephson junction stacks of various geometry2010
Author(s)
S. Guenon, M. Grunzweig, B. Gross, J. Yuan, Z. G. Jiang, Y. Y. Zhong, M. Y. Li., A. Ishii, P. H Wu., T. Hatano, R. G. Mints, E. Goldobin, D. Koelle, H. B. Wang and R. Kleiner
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Journal Title
Phys. Rev. B
Volume: 82
Pages: 214506
Peer Reviewed
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[Journal Article] Fast Josephson vortex ratchet made of intrinsic Josephson junctions in Bi2Sr2CaCu2O82009
Author(s)
H. B. Wang, B. Y. Zhu, C. Gurlich, M. Ruoff, S. Kim, T. Hatano, B. R. Zhao, Z. X. Zhao, E. Goldobin, D. Koelle, and R. Kleiner
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Journal Title
Phys. Rev. B
Volume: 80
Pages: 224507
Peer Reviewed
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[Journal Article] Fast Josephson vortex ratchet made of intrinsic Josephson junctions in Bi_2Sr_2CaCu_2O_82009
Author(s)
H. B. Wang, B. Y. Zhu, C. Gurlich, M. Ruoff, S. Kim, T. Hatano, B. R. Zhao, Z. X. Zhao, E. Goldobin, D. Koelle, and R. Kleiner
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Journal Title
Phys. Rev. B
Volume: 80
Pages: 224507
Peer Reviewed
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