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Study of interlayer tunneling spectroscopy on the pseudogap phase in cuprate superconductors

Research Project

Project/Area Number 24560017
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Applied materials science/Crystal engineering
Research InstitutionAoyama Gakuin University

Principal Investigator

KITANO Haruhisa  青山学院大学, 理工学部, 准教授 (00313164)

Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords高温超伝導 / 固有ジョセフソン接合 / トンネルスペクトロスコピー / 自己発熱効果 / 擬ギャップ / 超伝導ギャップ / 集束イオンビーム / 強相関電子系 / 超伝導材料・素子 / 物性実験 / 巨視的量子トンネル / マイクロ波 / トンネルスペクトル / Bi2212
Outline of Final Research Achievements

The pseudogap state in cuprate superconductors has been attracted, since it is an unusual elctronic phase characterizing the complex phase diagram in them. In this study, we measured the interlayer tunneling spectra for small intrinsic Josephson junctions (IJJs) fabricated from crystalline cuprate superconductors by using focused ion beam (FIB) techniques, and tried to observe the pseudogap in the differential conductance spectra and to reduce the self-heatings giving serious influences to the measured spectra. We succeeded in fabricating small IJJs with lateral area of 1 micrometer squared and a small number of juctions less than 10, by using only FIB techniques, and in observing a clear signature of the pseudogap in the measured spectra. We also obtained a prospect on a short pulse method, which can more effectively reduce the self-heatings to obtain more precise spectra.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (22 results)

All 2015 2014 2013 2012 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (15 results) Book (1 results) Remarks (3 results)

  • [Journal Article] Design and experiment of a microwave cavity resonator for the imaging of microwave properties2014

    • Author(s)
      Y. Ota, Y. Sasaki, T. Kaneko, S. Takei, T. Okutani, and H. Kitano
    • Journal Title

      JPS Conf. Proc.

      Volume: 1

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] C-axis I-V characteristics of Fe(Se,Te) single crystals as intrinsic Josephson junction stacks2014

    • Author(s)
      S. Ayukawa, H. Kitano, T. Noji, and Y. Koike
    • Journal Title

      JPS Conf. Proc.

      Volume: 1

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] A Sharp Peak of the Zero-Temperature Penetration Depth at Optimal Composition in BaFe_2(As_<1-x>P_x)_22012

    • Author(s)
      K. Hashimoto, K. Cho, T. Shibauchi, S. Kasahara, Y. Mizukami, et al.
    • Journal Title

      Science

      Volume: 336 Issue: 6088 Pages: 1554-1557

    • DOI

      10.1126/science.1219821

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Bi2212微小ジョセフソン接合のスイッチング電流確率分布におけるマイクロ波共鳴ダブルピーク構造の解析2015

    • Author(s)
      高橋優作, 筧大輝, 山口光, 小泉晋一郎, 鮎川晋也, 北野晴久
    • Organizer
      日本物理学会第70回年次大会
    • Place of Presentation
      早稲田大学早稲田キャンパス(東京都新宿区)
    • Year and Date
      2015-03-21 – 2015-03-24
    • Related Report
      2014 Annual Research Report
  • [Presentation] 鉄系超伝導体FeSe1-xTex単結晶における固有ジョセフソン効果の検証2015

    • Author(s)
      鮎川晋也, 筧大輝, 北野晴久, 平田和人, 大井修一, 浦田 隆広, 田邉 洋一, 谷垣 勝巳, 野地 尚, 小池 洋二
    • Organizer
      日本物理学会第70回年次大会
    • Place of Presentation
      早稲田大学早稲田キャンパス(東京都新宿区)
    • Year and Date
      2015-03-21 – 2015-03-24
    • Related Report
      2014 Annual Research Report
  • [Presentation] Possibility of macroscopic quantum tunneling in higher order switching events of Bi2Sr2CaCu2O8 intrinsic Josephson junctions2014

    • Author(s)
      Haruhisa Kitano, Yusaku Takahashi, Hikaru Yamaguchi, Daiki Kakehi, Shin-ichiro Koizumi, Shin-ya Ayukawa
    • Organizer
      The 9th International Symposium on Intrinsic Josephson Effects and THz Plasma Oscillations in High-Tc Superconductors (THz-Plasma 2014)
    • Place of Presentation
      Kyoto University (Kyoto)
    • Year and Date
      2014-11-30 – 2014-12-03
    • Related Report
      2014 Annual Research Report
  • [Presentation] Phase Escape and Retrapping in Higher Order Switching Events of Bi2Sr2CaCu2O8 Intrinsic Josephson Junctions2014

    • Author(s)
      Daiki Kakehi, Yusaku Takahashi, Hikaru Yamaguchi, Shin-ichiro Koizumi, Shin-ya Ayukawa, Haruhisa Kitano
    • Organizer
      The 9th International Symposium on Intrinsic Josephson Effects and THz Plasma Oscillations in High-Tc Superconductors (THz-Plasma 2014)
    • Place of Presentation
      Kyoto University (Kyoto)
    • Year and Date
      2014-11-30 – 2014-12-03
    • Related Report
      2014 Annual Research Report
  • [Presentation] Large Reduction of Number of Junctions in Bridge-type Intrinsic Josephson Junctions Using Focused Ion Beam Technique2014

    • Author(s)
      Yusaku Takahashi, Hikaru Yamaguchi, Yuta Tanaka, Daiki Kakehi, Shin-ichiro Koizumi, Shin-ya Ayukawa, Haruhisa Kitano
    • Organizer
      The 9th International Symposium on Intrinsic Josephson Effects and THz Plasma Oscillations in High-Tc Superconductors (THz-Plasma 2014)
    • Place of Presentation
      Kyoto University (Kyoto)
    • Year and Date
      2014-11-30 – 2014-12-03
    • Related Report
      2014 Annual Research Report
  • [Presentation] Study on Josephson effects along the c-axis of FeSe1-xTex single crystals using FIB milling technique2014

    • Author(s)
      Shin-ya Ayukawa, Daiki Kakehi, Takashi Noji, Takahiro Urata, Yoichi Tanabe,Katsumi Tanigaki, Yoji Koike, Haruhisa Kitano
    • Organizer
      The 9th International Symposium on Intrinsic Josephson Effects and THz Plasma Oscillations in High-Tc Superconductors (THz-Plasma 2014)
    • Place of Presentation
      Kyoto University (Kyoto)
    • Year and Date
      2014-11-30 – 2014-12-03
    • Related Report
      2014 Annual Research Report
  • [Presentation] Bi2212微小ジョセフソン接合の高次スイッチング事象におけるマイクロ波共鳴効果2014

    • Author(s)
      高橋優作, 筧大輝, 山口光, 小泉晋一郎, 鮎川晋也, 北野晴久
    • Organizer
      日本物理学会2014年秋季大会
    • Place of Presentation
      中部大学春日井キャンパス(愛知県春日井市)
    • Year and Date
      2014-09-07 – 2014-09-10
    • Related Report
      2014 Annual Research Report
  • [Presentation] スコッチテープ法によるBi2212単結晶の作製と微細加工2014

    • Author(s)
      池田裕太郎, 野田匡廷, 筧大輝, 鮎川晋也, 北野晴久
    • Organizer
      日本物理学会2014年秋季大会
    • Place of Presentation
      中部大学春日井キャンパス(愛知県春日井市)
    • Year and Date
      2014-09-07 – 2014-09-10
    • Related Report
      2014 Annual Research Report
  • [Presentation] 鉄系超伝導体FeSe0.3Te0.7単結晶における微小接合作製2014

    • Author(s)
      筧大輝, 鮎川晋也, 北野晴久, 野地 尚, 小池 洋二, 浦田 隆広, 田邉 洋一, 谷垣 勝巳
    • Organizer
      日本物理学会2014年秋季大会
    • Place of Presentation
      中部大学春日井キャンパス(愛知県春日井市)
    • Year and Date
      2014-09-07 – 2014-09-10
    • Related Report
      2014 Annual Research Report
  • [Presentation] Design and experiment of a microwave cavity resonator for the imaging of microwave properties2013

    • Author(s)
      Y. Ota, Y. Sasaki, T. Kaneko, S. Takei, T. Okutani, and H. Kitano
    • Organizer
      The 12th Asia Pacific Physics Conference
    • Place of Presentation
      Makuhari Messe, Chiba
    • Related Report
      2013 Research-status Report
  • [Presentation] C-axis I-V characteristics of Fe(Se,Te) single crystals as intrinsic Josephson junction stacks2013

    • Author(s)
      S. Ayukawa, H. Kitano, T. Noji, and Y. Koike
    • Organizer
      The 12th Asia Pacific Physics Conference
    • Place of Presentation
      Makuhari Messe, Chiba
    • Related Report
      2013 Research-status Report
  • [Presentation] Bi2212微小固有ジョセフソン接合の高次スイッチング事象におけるMQTの可能性2013

    • Author(s)
      北野晴久、山口光、筧大輝、小泉晋一郎、鮎川晋也
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      徳島大学
    • Related Report
      2013 Research-status Report
  • [Presentation] Bi2212微小固有ジョセフソン接合のスイッチング電流分布における位相再補足効果2013

    • Author(s)
      筧大輝、山口光、鮎川晋也、北野晴久
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      徳島大学
    • Related Report
      2013 Research-status Report
  • [Presentation] FIB法による固有ジョセフソン接合素子の接合数制御

    • Author(s)
      山口光
    • Organizer
      日本物理学会
    • Place of Presentation
      横浜国立大学
    • Related Report
      2012 Research-status Report
  • [Presentation] 鉄系超伝導体FeSe0.3Te0.7単結晶を用いたジョセフソン接合の作製

    • Author(s)
      鮎川晋也
    • Organizer
      応用物理学会
    • Place of Presentation
      神奈川工科大学
    • Related Report
      2012 Research-status Report
  • [Book] 超伝導磁束状態の物理2015

    • Author(s)
      門脇和男ほか(30名程度)
    • Publisher
      裳華房
    • Related Report
      2014 Annual Research Report
  • [Remarks] 青山学院大学理工学部物理数理学科 北野研究室ホームページ

    • URL

      http://www.phys.aoyama.ac.jp/~w3-kitano/index.html

    • Related Report
      2014 Annual Research Report
  • [Remarks] 青山学院大学理工学部物理数理学科 北野研究室ホームページ

    • URL

      http://www.phys.aoyama.ac.jp/&#771;w3-kitano/index.html

    • Related Report
      2013 Research-status Report
  • [Remarks] 青山学院大学理工学部物理数理学科 北野研究室ホームページ

    • URL

      http://www.phys.aoyama.ac.jp/~w3-kitano/index.html

    • Related Report
      2012 Research-status Report

URL: 

Published: 2013-05-31   Modified: 2019-07-29  

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