Elucidating the origin of high temperature superconductivity in iron-pnictides via the growth of epitaxial thin films

2010 Fiscal Year Final Research Report

• Project/Area Number: 21740254
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: Kyoto University
• Principal Investigator: KASAHARA Shigeru Kyoto University, 低温物質科学研究センター, 研究員 (10425556)
• Research Collaborator: TERASHIMA Takahito 京都大学, 低温物質科学研究センター, 教授 (40252506) ; SHIBAUCHI Takasada 京都大学, 理学(系)研究科(研究院), 准教授 (00251356) ; MATSUDA Yuji 京都大学, 理学(系)研究科(研究院), 教授 (50199816)
• Project Period (FY): 2009 – 2010
• Keywords: 高温超伝導

Research Abstract

We have succeeded in in-situ growth of epitaxial thin films of iron-pnictides, which are remarked as the second generation materials of high temperature superconductors. Optimally doped superconducting thin films are successfully grown by pulsed laser deposition (PLD) technique using exima laser. We have also grown single crystalline samples which complement the thin films and performed precise experiments on the physical properties of the obtained materials.

Research Products

• [Journal Article] Specific Heat Discontinuity, ΔC, at Tc in BaFe_2(As_0.7P_0.3)_2-Consistent with Unconventional Superconductivity (2011)
  • Author(s): J.S.Kim, G.R.Stewart, S.Kasahara, T.Shibauchi, T.Terashima, Y.Matsuda
  • Journal Title: J.Phys. : Condens.Matter 23 Pages: 222201
  • Peer Reviewed
• [Journal Article] Orbital-Independent Superconducting Gaps in Iron-Pnictides (2011)
  • Author(s): T.Shimojima, F.Sakaguchi, K.Ishizaka, Y.Ishida, T.Kiss, M.Okawa, T.Togashi, C.-T.Chen, S.Watanabe, A.Chainani, K.Ohgushi, S.Kasahara, T.Terashima, T.Shibauchi, Y.Matsuda, S.Shin
  • Journal Title: Science 332 Pages: 564-567
  • Peer Reviewed
• [Journal Article] Two- and Three-Dimensional Fermi Surfaces and their Nesting Properties in Superconducting BaFe_2(As_1-xP_x)_2 (2011)
  • Author(s): T.Yoshida, I.Nishi, S.Ideta, A.Fujimori, M.Kubota, K.Ono, S.Kasahara, T.Shibauchi, T.Terashima, Y.Matsuda, H.Ikeda, R.Arita
  • Journal Title: Phys.Rev.Lett. 106 Pages: 117001
  • Peer Reviewed
• [Journal Article] Highly Reduced Anatase TiO2 Thin Films Obtained via Low-Temperature Reduction (2011)
  • Author(s): Atsushi Kitada, Shigeru Kasahara, Takahito Terashima, Kazuyoshi Yoshimura, Yoji Kobayashi, Hiroshi Kageyama
  • Journal Title: Appl.Phys. Express 4 Pages: 035801
  • Peer Reviewed
• [Journal Article] Abrupt recovery of Fermi-liquid transport following the collapse of the c axis in CaFe_2(As_1-xP_x)_2 single crystals (2011)
  • Author(s): S.Kasahara, T.Shibauchi, Y.Nakai, K.Hashimoto, H.Ikeda, T.Terashima, Y.Matsuda
  • Journal Title: Phys.Rev..B 83 Pages: 060505(R)
  • Peer Reviewed
• [Journal Article] Quasiparticle Scattering Induced by Charge Doping of Iron-Pnictide Superconductors Probed by Collective Vortex Pinning (2010)
  • Author(s): C.J.van der Beek, M.Konczykowski, S.Kasahara, T.Terashima, R.Okazaki, T.Shibauchi, Y.Matsuda
  • Journal Title: Phys.Rev.Lett. 105 Pages: 267002
  • Peer Reviewed
• [Journal Article] Chemical Pressure and Physical Pressure in BaFe_2(As_1-xP_x)_2 (2010)
  • Author(s): L.E.Klintberg, S.K.Goh, S.Kasahara, Y.Nakai, K.Ishida, M.Sutherland, T.Shibauchi, Y.Matsuda, T.Terashima
  • Journal Title: J.Phys.Soc.Jpn. 79 Pages: 123706
  • Peer Reviewed
• [Journal Article] Unconventional Superconductivity and Antiferromagnetic Quantum Critical Behavior in the Isovalent-Doped BaFe_2(As_1-xP_x)_2 (2010)
  • Author(s): Y.Nakai, T.Iye, S.Kitagawa, K.Ishida, H.Ikeda, S.Kasahara, H.Shishido, T.Shibauchi, Y.Matsuda, T.Terashima
  • Journal Title: Phys.Rev.Lett. 105 Pages: 107003
  • Peer Reviewed
• [Journal Article] Anisotropic Superconducting Properties of Optimally Doped BaFe_2(As_0.65P_0.35)_2 under Pressure (2010)
  • Author(s): S.K.Goh, Y.Nakai, K.Ishida, L.E.Klintberg, Y.Ihara, S.Kasahara, T.Shibauchi, Y.Matsuda, T.Terashima
  • Journal Title: Phys.Rev.B 82 Pages: 094502
  • Peer Reviewed
• [Journal Article] Specific heat versus field in the 30 K superconductor BaFe_2(As_0.7P_0.3)_2 (2010)
  • Author(s): J.S.Kim, P.J.Hirschfeld, G.R.Stewart, S.Kasahara, T.Shibauchi, T.Terashima, Y.Matsuda
  • Journal Title: Phys.Rev.B 81 Pages: 184519
  • Peer Reviewed
• [Journal Article] Line nodes in the energy gap of superconducting BaFe_2(As_1-xP_x)_2 single crystals as seen via penetration depth and thermal conductivity (2010)
  • Author(s): K.Hashimoto, M.Yamashita, S.Kasahara, Y.Senshu, N.Nakata, S.Tonegawa, K.Ikada, A.Serafin, A.Carrington, T.Terashima, H.Ikeda, T.Shibauchi, Y.Matsuda
  • Journal Title: Phys.Rev.B 81 Pages: 220501(R)
  • Peer Reviewed
• [Journal Article] Evolution from non-Fermi- to Fermi-liquid transport via isovalent doping in BaFe_2(As_1-xP_x)_2 superconductors (2010)
  • Author(s): S.Kasahara, T.Shibauchi, K.Hashimoto, K.Ikada, S.Tonegawa, R.Okazaki, H.Shishido, H.Ikeda, H.Takeya, K.Hirata, T.Terashima, Y.Matsuda
  • Journal Title: Phys.Rev.B 81 Pages: 184519
  • Peer Reviewed
• [Journal Article] Evolution of the Fermi Surface of BaFe_2(As_1-xP_x)_2 on Entering the Superconducting Dome (2010)
  • Author(s): H.Shishido, A.F.Bangura, A.I.Coldea, S.Tonegawa, K.Hashimoto, S.Kasahara, P.M.C.Rourke, H.Ikeda, T.Terashima, R.Settai, Y.onuki, D.Vignolles, C.Proust, B.Vignolle, A.McCollam, Y.Matsuda, T.Shibauchi, A.Carrington
  • Journal Title: Phys.Rev.Lett. 104 Pages: 057008
  • Peer Reviewed
• [Journal Article] ^<31>P and ^<75>As NMR evidence for a residual density of states at zero energy in superconducting" BaFe_2(As0.67P0.33)2 (2010)
  • Author(s): Yusuke Nakai, Tetsuya Iye, Shunsaku Kitagawa, Kenji Ishida, Shigeru Kasahara, Takasada Shibauchi, Yuji Matsuda, Takahito Terashima
  • Journal Title: Phys.Rev.B 81 Pages: 020503
  • Peer Reviewed
• [Journal Article] Antiferromagnetic fluctuations in iron pnictide superconductor BaFe_2(As_0.67P_0.33)_2 investigated by 31P NMR (2010)
  • Author(s): Yusuke Nakai, Tetsuya Iye, Shunsaku Kitagawa, Kenji Ishida, Shigeru Kasahara, Takasada Shibauchi, Yuji Matsuda, Takahito Terashima
  • Journal Title: Physica C 470 Pages: S420
  • Peer Reviewed
• [Journal Article] Superconductivity induced by isovalent doping in single crystals of BaFe_2(As_1-xP_x)_2 (2010)
  • Author(s): S.Kasahara, K.Hashimoto, R.Okazaki, H.Shishido, M.Yamashita, K.Ikada, S.Tonegawa, N.Nakata, Y.Sensyu, H.Takeya, K.Hirata, T.Shibauchi, T.Terashima, Y.Matsuda
  • Journal Title: Physica C 470 Pages: S462
  • Peer Reviewed
• [Journal Article] Characterization of FeSe single crystals (2010)
  • Author(s): Hiroyuki Takeya, Shigeru Kasahara, Kazuto Hirata, Takashi Mochiku, Akira Sato, Yoshihiko Takano
  • Journal Title: Physica C 470 Pages: S497
  • Peer Reviewed
• [Journal Article] Microwave Surfacacave-Impedance Measurements of the Magnetic Penetration Depth in Single Crystal Ba1-xKxFe2As2 Superconductors : Evidence for a Disorder-Dependent Superfluid Density (2009)
  • Author(s): K.Hashimoto, T.Shibauchi, S.Kasahara, K.Ikada, S.Tonegawa, T.Kato, R.Okazaki, C.J.van der Beek, M.Konczykowski, H.Takeya, K.Hirata, T.Terashima, Y.Matsuda
  • Journal Title: Phys.Rev.Lett. 102 Pages: 207001
  • Peer Reviewed
• [Journal Article] Nesting of Electron and Hole Fermi Surfaces in Non-Superconducting BaFe_2P_2
  • Author(s): B.J.Arnold, S.Kasahara, A.I.Coldea, T.Terashima, Y.Matsuda, T.Shibauchi, A.Carrington
  • Journal Title: Phys.Rev.B [Rapid Commun.] (to be published)
  • Peer Reviewed
• [Presentation] 磁場侵入長による等価P置換された鉄砒素系超伝導体の準粒子励起 (2011)
  • Author(s): 橋本顕一郎, 勝股亮, 笠原成, 寺嶋孝仁, K.Cho, M.A.Tanatar, R.Prozorov, A.Carrington, 芝内孝禎, 松田祐司
  • Organizer: 日本物理学会年次大会
  • Place of Presentation: 新潟大学, 新潟県新潟市
  • Year and Date: 20110325-20110328
• [Presentation] 鉄系超伝導体BaFe2(As1-xPx)2の正方晶相における回転対称性の破れ (2011)
  • Author(s): 史宏杰, 笠原成, 岡崎竜二, 山下穣, 芝内孝禎, 寺嶋孝仁, 松田祐司
  • Organizer: 日本物理学会年次大会
  • Place of Presentation: 新潟大学, 新潟県新潟市
  • Year and Date: 20110325-20110328
• [Presentation] 化学的圧力による111系鉄ニクタイドの基底状態制御 (2011)
  • Author(s): 笠原成, 橋本顕一郎, 勝股亮, 芝内孝禎, 松田祐司, 寺嶋孝仁
  • Organizer: 日本物理学会年次大会
  • Place of Presentation: 新潟大学, 新潟県新潟市
  • Year and Date: 20110325-20110328
• [Presentation] Magnetic Torque Evidence for Broken Rotational Symmetry in the Tetragonal Phase of BaFe2(As1-xPx)2 Single Crystals (2011)
  • Author(s): Shigeru Kasahara, Hongjie Shi, Ryuji Okazaki, Kenichiro Hashimoto, Minoru Yamashita, Takasada Shibauchi, Takahito Terashima, Yuji Matsuda
  • Organizer: American Physical Society March Meeting
  • Place of Presentation: Dallas, Texas, USA.
  • Year and Date: 20110321-20110325
• [Presentation] Robust nodal gap structure in BaFe_2(As_1-xP_x)_2 with P doping revealed by magnetic penetration depth measurements (2011)
  • Author(s): Kenichiro Hashimoto, Ryo Katsumata, Sho Tonegawa, Shigeru Kasahara, Takahito Terashima, Takasada Shibauchi, Yuji Matsuda, Alessandro Serafin, Antony Carrington
  • Organizer: American Physical Society March Meeting
  • Place of Presentation: Dallas, Texas, USA.
  • Year and Date: 20110321-20110325
• [Presentation] 鉄系超伝導体BaFe_2(As_1-x,P_x)_2における対称性の破れ (2010)
  • Author(s): 笠原成
  • Organizer: 第18回渦糸物理国内会議, 日本原子力研究開発機構システム計算科学センター
  • Place of Presentation: 東京都
  • Year and Date: 20101201-20101203
• [Presentation] Isovalent phosphorus doping as a model system to study Fe-pnictides (2010)
  • Author(s): Shigeru Kasahara
  • Organizer: JSPS A3 Foresight Program "Joint Research on Novel Properties of Complex Oxides" Autumn School for Young Scientists
  • Place of Presentation: Kyoto.Japan.
  • Year and Date: 20101123-20101126
• [Presentation] LiFe(As,Pn)純良単結晶の物性 (2010)
  • Author(s): 笠原成, 橋本顕一郎, 勝股亮, 利根川翔, 芝内孝禎, 松田祐司, 寺嶋孝仁
  • Organizer: 日本物理学会分科会
  • Place of Presentation: 大阪府立大学, 大阪府堺市
  • Year and Date: 20100923-20100926
• [Presentation] 鉄系超伝導体の角度分解熱伝導率測定による超伝導ギャップ構造の研究 (2010)
  • Author(s): 千秋義紀, 永田真己, 橋本顕一郎, 山下穣, 芝内孝禎, 松田祐司, 笠原成, 寺嶋孝仁, 齊藤拓, 深澤英人, 小堀洋, 木方邦宏, 伊豫彰, 李哲虎, 永崎洋
  • Organizer: 日本物理学会分科会
  • Place of Presentation: 大阪府立大学, 大阪府堺市
  • Year and Date: 20100923-20100926
• [Presentation] CaFe2(As,P)2単結晶におけるT-cT構造相転移と超伝導 (2010)
  • Author(s): 笠原成, 中井祐介, 橋本顕一郎, 石田憲二, 芝内孝禎, 寺嶋孝仁, 松田祐司
  • Organizer: 日本物理学会分科会
  • Place of Presentation: 大阪府立大学, 大阪府堺市
  • Year and Date: 20100923-20100926
• [Presentation] 磁場侵入長測定からみたBaFe_2(As_1-x,P_x)_2における超伝導ギャップ構造のドープ依存性 (2010)
  • Author(s): 勝股亮, 橋本顕一郎, B.Anna, 利根川翔, 笠原成, 山下穣, 寺嶋孝仁, A.Serafin, A.Carrington, 芝内孝禎, 松田祐司
  • Organizer: 日本物理学会分科会
  • Place of Presentation: 大阪府立大学, 大阪府堺市
  • Year and Date: 20100923-20100926
• [Presentation] 低温還元反応による還元アナターゼTiO2薄膜の電子物性制御 (2010)
  • Author(s): 北田敦, 笠原成, 寺嶋孝仁, 小林洋治, 吉村一良, 陰山洋
  • Organizer: 日本物理学会分科会
  • Place of Presentation: 大阪府立大学, 大阪府堺市
  • Year and Date: 20100923-20100926
• [Presentation] AEFe_2(As,P)_2純良単結晶における輸送現象測定 (2010)
  • Author(s): 笠原成, 橋本顕一郎, 利根川翔, 勝股亮, 中井祐介, 石田憲二, 芝内孝禎, 寺嶋孝仁, 松田祐司
  • Organizer: 日本物理学会年次大会
  • Place of Presentation: 岡山大学, 岡山県岡山市
  • Year and Date: 20100320-20100323
• [Presentation] dHvA効果から見たBaFe_2(As_1-x,P_x)_2のフェルミ面の変化 (2010)
  • Author(s): 宍戸寛明, A.F.Bangura, A.I.Coldea, 橋本顕一郎, 笠原成, P.M.C.Rourke, 池田浩章, 寺嶋孝仁, 利根川翔, 摂待力生, 大貫惇睦, D.Vignolles, C.Proust, B.Vignolle, A.McCollam, 芝内孝禎, 松田祐司, A.Carrington
  • Organizer: 日本物理学会年次大会
  • Place of Presentation: 岡山大学, 岡山県岡山市
  • Year and Date: 20100320-20100323
• [Presentation] マイクロ波準粒子伝導度測定による鉄系高温超伝導体の不純物効果について (2010)
  • Author(s): 利根川翔, 橋本顕一郎, 笠原成, 勝股亮, 山下穣, 寺嶋孝仁, 芝内孝禎, 松田祐司
  • Organizer: 日本物理学会年次大会
  • Place of Presentation: 岡山大学, 岡山県岡山市
  • Year and Date: 20100320-20100323
• [Presentation] 鉄系超伝導体AEFe_2(As,P)_2単結晶の超伝導ギャップ構造 (2010)
  • Author(s): 勝股亮, 橋本顕一郎, 笠原成, 利根川翔, 井加田洸輔, 山下穣, 中井祐介, 石田憲二, 寺嶋孝仁, 芝内孝禎, 松田祐司
  • Organizer: 日本物理学会年次大会
  • Place of Presentation: 岡山大学, 岡山県岡山市
  • Year and Date: 20100320-20100323
• [Presentation] Non-Fermi Liquid Transport Properties in Phosphorous Substituted Iron-Arsenides (2010)
  • Author(s): S.Kasahara, K.Hashimoto, M.Yamashita, R.Okazaki, H.Shishido, K.Ikada, N.Nakata, Y.Sensyu, M.Shimozawa, H.Ikeda, T.Shibauchi, T.Terashima, Y.Matsuda
  • Organizer: American Physical Society March Meeting
  • Place of Presentation: Portland, Oregon, USA.
  • Year and Date: 20100315-20100318
• [Presentation] Quasi-degenerate superconductivity in the `122' iron-pnictide superconductors (2010)
  • Author(s): K.Hashimoto, A.Serafin, A.Carrington, S.Kasahara, S.Tonegawa, K.Ikada, M.Yamashita, H.Ikeda, T.Terashima, T.Shibauchi, Y.Matsuda
  • Organizer: American Physical Society March Meeting
  • Place of Presentation: Portland, Oregon, USA.
  • Year and Date: 20100315-20100318
• [Presentation] Isovalent phosphorus doping as a model system to study Fe-pnictides (2010)
  • Author(s): Shigeru Kasahara
  • Organizer: International Mini Workshop on Iron-Based Superconductors
  • Place of Presentation: Yukawa Inst.Kyoto University.
  • Year and Date: 2010-11-04
• [Presentation] 単結晶BaFe_2(As_1-xP_x)_2における超伝導:電子輸送現象測定 (2009)
  • Author(s): 笠原成, 橋本顕一郎, 利根川翔, 井加田洸輔, 池田浩章, 竹屋浩幸, 平田和人, 芝内孝禎, 寺嶋孝仁, 松田祐司
  • Organizer: 日本物理学会分科会
  • Place of Presentation: 熊本大学, 熊本県熊本市
  • Year and Date: 20090925-20090928
• [Presentation] PLD法による鉄系超伝導体薄膜の作成と超伝導状態の研究 (2009)
  • Author(s): 笠原成, 加藤智成, 竹屋浩幸, 平田和人, 芝内孝禎, 松田祐司, 寺嶋孝仁
  • Organizer: 日本物理学会分科会
  • Place of Presentation: 熊本大学, 熊本県熊本市
  • Year and Date: 20090925-20090928
• [Presentation] 磁場侵入長による鉄砒素系超伝導体BaFe_2(As_1-xP_x)_2単結晶の超伝導対称性の決定 (2009)
  • Author(s): 橋本顕一郎, 利根川翔, 井加田洸輔, Allensando Serafin, Antony Carrington, 笠原成, 寺嶋孝仁, 竹屋浩幸, 平田和人, 芝内孝禎, 松田祐司
  • Organizer: 日本物理学会分科会
  • Place of Presentation: 熊本大学, 熊本県熊本市
  • Year and Date: 20090925-20090928
• [Presentation] BaFe_2(As_1-xP_x)_2の熱伝導率測定による超伝導ギャップ構造の研究 (2009)
  • Author(s): 千秋義紀, 山下穣, 中田宣人, 笠原成, 寺嶋孝仁, 竹屋浩幸, 平田和人, 芝内孝禎, 松田祐司
  • Organizer: 日本物理学会分科会
  • Place of Presentation: 熊本大学, 熊本県熊本市
  • Year and Date: 20090925-20090928
• [Presentation] 鉄ヒ素系高温超伝導体におけるトルク測定 (2009)
  • Author(s): 石井究, 加藤智成, 山下穣, 笠原成, 寺島孝仁, 松田祐司, 芝内孝禎
  • Organizer: 日本物理学会分科会
  • Place of Presentation: 熊本大学, 熊本県熊本市
  • Year and Date: 20090925-20090928
• [Presentation] エキシマレーザーによるAFe2As2系エピタキシャル薄膜のその場成長 (2009)
  • Author(s): 笠原成, 加藤智成, 竹屋浩幸, 平田和人, 芝内考貞, 松田祐司, 寺嶋孝仁
  • Organizer: 応用理学会秋季大会
  • Place of Presentation: 富山大学, 富山県富山市
  • Year and Date: 20090908-20090911
• [Presentation] Superconductivity Induced by Iso-valent Doping in Single Crystals of BaFe_2(As_1-xP_x)_2 (2009)
  • Author(s): S.Kasahara, K.Hashimoto, R.Okazaki, H.Shishido, M.Yamashita, K.Ikada, S.Tonegawa, N.Nakata, Y.Sensyu, H.Takeya, K.Hirata, T.Shibauchi, T.Terashima, Y.Matsuda
  • Organizer: The 9th International Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors (M2S-HTSC)
  • Place of Presentation: Tokyo, Japan.
  • Year and Date: 20090907-20090912
• [Presentation] Study of penetration depth in single crystals of BaFe_2(As_1-xP_x)_2 with isovalent doping (2009)
  • Author(s): K.Hashimoto, S.Kasahara, Y.Senshu, N.Nakata, S.Tonegawa, K.Ikada, A.Serafin, A.Carrington, H.Ikeda, T.Terashima, T.Shibauchi, Y.Matsuda
  • Organizer: The 9th International Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors (M2S-HTSC)
  • Place of Presentation: Tokyo, Japan.
  • Year and Date: 20090907-20090912