Flash Memory Effect in Intrinsic Josephson Junctions

2011 Fiscal Year Final Research Report

• Project/Area Number: 21510137
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Microdevices/Nanodevices
• 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)
• Project Period (FY): 2009 – 2011
• 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.

Research Products

• [Journal Article] Coherent Terahertz Emission of Intrinsic Josephson Junction Stacks in the Hot Spot Regime (2010)
  • 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
  • Journal Title: Phys. Rev. Lett Volume: 105 Pages: 057002
  • Peer Reviewed
• [Journal Article] Interaction of hot spots and terahertz waves in Bi2Sr2CaCu2O8 intrinsic Josephson junction stacks of various geometry (2010)
  • 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
  • Journal Title: Phys. Rev. B Volume: 82 Pages: 214506
  • Peer Reviewed
• [Journal Article] Hot spots and waves in Bi2Sr2CaCu2O8 intrinsic Josephson junction stacks-a study by Low Temperature Scanning Laser Microscopy (2009)
  • Author(s): H. B. Wang, S. Guenon, J. Yuan, A. Ishii, S. Arisawa, T. Hatano, T. Yamashita, D. Koelle, and R. Kleiner
  • Journal Title: Phys. Rev. Lett Volume: 102 Pages: 017006
  • Peer Reviewed
• [Journal Article] Fast Josephson vortex ratchet made of intrinsic Josephson junctions in Bi2Sr2CaCu2O8 (2009)
  • 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
  • Journal Title: Phys. Rev. B Volume: 80 Pages: 224507
  • Peer Reviewed
• [Journal Article] Fast Josephson vortex ratchet made of intrinsic Josephson junctions in Bi_2Sr_2CaCu_2O_8 (2009)
  • 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
  • Journal Title: Phys. Rev. B Volume: 80 Pages: 224507
  • Peer Reviewed
• [Journal Article] Layer-by-layer growth and magnetic properties of Y_3Fe_5O_<12> thin films (2009)
  • Author(s): Y. Krockenberger, K. S. Yun, T. Hatano, S. Arisawa, M. Kawasaki, Y. Tokura
  • Journal Title: J. Appl. Phys Volume: 106 Pages: 123911
  • Peer Reviewed
• [Journal Article] Preparation of electron-doped La_<2-x> Ce_xCuO_<4±d> thin films with various Ce doping by dc magnetron sputtering (2009)
  • Author(s): B. X. Wu, K. Jin,. J. Yuan, H. B. Wang, T. Hatano, B. R. Zhao, B. Y. Zhu
  • Journal Title: PHYSICA C Volume: 469 Pages: 1945
  • Peer Reviewed
• [Journal Article] Thickness-induced insufficient oxygen reduction in thin films (2009)
  • Author(s): B. X. Wu, K. JIN,. J. Yuan, H. B. Wang, T. Hatano, B. R. Zhao, B. Y. Zhu
  • Journal Title: Supercond. Sci. Tech Volume: 22 Pages: 085004
  • Peer Reviewed
• [Presentation] 固有ジョセフソン接合巨大メサの磁束フロー現象 (2011)
  • Author(s): 羽多野毅、王華兵
  • Organizer: 第19回渦糸物理国内会議
  • Place of Presentation: 物質・材料研究機構、つくば
  • Year and Date: 20111207-09
• [Presentation] Bi-2212 IJJs under layer parallel magnetic field-large mesa for THz cavity (2011)
  • Author(s): T. Hatano and H. B. Wang
  • Organizer: 2nd JST-DFG Workshop on Terahertz Superconductor Electronics
  • Place of Presentation: Blaubeuren
  • Year and Date: 20111016-19
• [Presentation] Lock-in phenomena in intrinsic Josephson junctions for THz oscillator under the layer parallel magnetic field (2011)
  • Author(s): Takeshi Hatano and Huabing Wang
  • Organizer: Superconductivity Centennial Conference 2011
  • Place of Presentation: The Hague, the Netherlands
  • Year and Date: 20110918-23
• [Presentation] Lock-in phenomena of vortices in intrinsic Josephson junctions for THz oscillator (2011)
  • Author(s): Takeshi Hatano and Huabing Wang
  • Organizer: The 13th International Workshop on Vortex Matter in Superconductors
  • Place of Presentation: Chicago, USA
  • Year and Date: 20110731-0807
• [Presentation] 固有ジョセフソン接合巨大メサのLock-in現象 (2011)
  • Author(s): 羽多野毅,王華兵
  • Organizer: 2011秋季応用物理学術講演会
  • Place of Presentation: 山形市
  • Year and Date: 2011-08-31
• [Presentation] THz cavity resonance in intrinsic Josephson junctions under a layer-parallel magnetic field (2010)
  • Author(s): Takeshi Hatano, Huabing Wang, Beiyi Zhu, Shinya Urayama, Shinichi Kawakami, and Tsutomu Yamashita
  • Organizer: PLASMA2010
  • Place of Presentation: Hirosaki
  • Year and Date: 20100429-0502
• [Presentation] Terahertz Excitation in Intrinsic Josephson Junctions under Layer-Parallel Magnetic Fields (2010)
  • Author(s): T. Hatano, S. Kawakami, S. M. Kim, S. Urayama, B. Y. Zhu and H. B. Wang
  • Organizer: The First JST-DFG Workshop on Terahertz Superconductor Electronics
  • Place of Presentation: Tsukuba, Japan
  • Year and Date: 20100221-24
• [Presentation] 固有ジョセフソン接合巨大メサのLock-in現象 (2010)
  • Author(s): 羽多野毅,王華兵
  • Organizer: 第18回渦糸物理国内会議
  • Place of Presentation: 日本原子力研究開発機構,東京都
  • Year and Date: 2010-12-01
• [Presentation] Novel transport properties in intrinsic Josephson junctions (2009)
  • Author(s): T. Hatano, H. B. Wang, Y. Inamoto, and M. Nagao
  • Organizer: The International Workshop on Terahertz Radiation and Metamaterials
  • Place of Presentation: Benasque, Spain
  • Year and Date: 20091215-22
• [Presentation] 固有ジョセフソン接合の新規機能性探索 (2009)
  • Author(s): 羽多野毅
  • Organizer: 第17回磁束線物理会議
  • Place of Presentation: 大阪
  • Year and Date: 20091201-03
• [Presentation] Flash Memory Effect in Intrinsic Josephson Junctions (2009)
  • Author(s): Takeshi Hatano
  • Organizer: Eastern Asia Symposium on Superconductor Electronics
  • Place of Presentation: Nanjing, China
  • Year and Date: 20091011-15
• [Presentation] Flash Memory Effect in Y-123 Intrinsic Josephson Junctions (2009)
  • Author(s): T. Hatano, M. Nagao, Y. Inamoto, and H. Wang
  • Organizer: 9th International Conference on Materials and Mechanisms of Superconductivity(M2S-IX)
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 20090907-11
• [Presentation] Non-volatile Flash Memory Effect in Y-123 Intrinsic Josephson Junctions (2009)
  • Author(s): T. Hatano, M. Nagao, Y. Inamoto, H. B. Wang
  • Organizer: International Superconductor Electronics Conference
  • Place of Presentation: Fukuoka
  • Year and Date: 20090617-19
• [Presentation] Non-volatile Flash Memory Effect in Y-123 Intrinsic Josephson Junctions (2009)
  • Author(s): T. Hatano, M. Nagao, Y. Inamoto, H. B. Wang
  • Organizer: 12th International Superconductive Electronics Conference(ISEC 2009)
  • Place of Presentation: Fukuoka, JAPAN
  • Year and Date: 20090616-19