2002 Fiscal Year Annual Research Report

ショットノイズ測定による強相関物質の電荷素励起の研究

Research Project

Project/Area Number	14340101
Research Institution	The University of Tokyo
Principal Investigator	前田京剛東京大学, 大学院・総合文化研究科, 助教授 (70183605)
Co-Investigator(Kenkyū-buntansha)	山下努東北大学, 未来科学技術共同研究センター, 教授 (30006259) 北野晴久東京大学, 大学院・総合文化研究科, 助手 (00313164)
Keywords	レーザーアブレーション / 収束イオンビーム / La系超伝導体 / 薄膜 / 低接触抵抗電極 / エッチング / エキシマレーザー / アンダードープ
Research Abstract	1)レーザーアブレーション薄膜作成装置の製作エキシマーレーザーを用いた,レーザーアブレーション法による薄膜作成装置を作製した。 2)アンダードープ銅酸化物超伝導体単結晶薄膜の作製作製したレーザーアブレーション薄膜作成装置で,アンダードープLa系超伝導体薄膜を作成した。 3)収束イオンビーム(FIB)エッチングの打ち合わせ・トレーニング物質・材料研究機構山下・波多野グループと打ち合わせを行い,収束イオンビームエッチングに関するトレーニングを開始した。 4)低接触抵抗電極開発の研究酸化物上に,非常に接触抵抗の低い電極を作成することを目的として,種々の電極形成技術の研究を開始した。

Research Products

(15 results)

All Other

All Publications (15 results)

[Publications] A.Maeda et al.: "Vortices in high Tc superconductors"in "Vortex Electronics and SQUIDs", edited by T.Kobayashi. (in press).
[Publications] A.Maeda et al.: "Dynamics of vortices in high-Tc superconductors investigated by density and conduction noise measurememts"Sutudies of High Temperature Superconductors, edited by A. Narlikar, Vol.41, Chap.10 (Nova Science Publishers, NY2002). 247-274 (2002)
[Publications] A.Maeda et al.: "Location-sensitive measurement of the local fluctuation of driven vortex density in Bi_2Sr_2CaCu_2Oy"Review B. 65. 54506-54516 (2002)
[Publications] H.Kitano et al.: "Evidence for insulating behavior in the electric conduction (NH_3)K_3C_<60> systems"Phys.Rev.Lett.. 88. 96401-96404 (2002)
[Publications] A.Maeda, Y.Togawa, H.Kitano: "An experimental approach to understand dynamical phase diagram of driven vortices of high-Tc superconductors"Physica C. 369. 177-181 (2002)
[Publications] H.Kitano, A.Maeda: "Comment on "Anomalous dielectric response in the π-d correlated metallic state of λ-(BEDT-TSF)_2FeCl_4"J.Phys.Soc.Japan. 71. 666-667 (2002)
[Publications] K.Takaki et al.: "Effects of superconducting gap anisotropy on the flux flow resistivity in Y(Ni_<1-x>Pt_x)_2B_2C"Phys.Rev.B. 66. 184511-184515 (2002)
[Publications] K.Kinoshita et al.: "Millimeter wave and microwave electrodynamic spectroscopy of YBa_2(Cu_<1-x>Zn_x)_3Oy in the Meissner and mixed state"Physica C. (in press).
[Publications] H.Kitano et al.: "Nonlinear conductivity in the slightly hole-doped Sr_<14-x>Ca_xCu_<24>O_<41> ladder compounds"Physica C. (in press).
[Publications] K.Iwaya et al.: "Electronic state of NbSe_2 investigated by STM/STS"Physica C. (in press).
[Publications] A.Maeda, Y.Togawa, H.Kitano: "Dynamic phase diagram of vortices in high-Tc superconductors determine by experimental studies"Physica C. (in press).
[Publications] R.Inoue, H.Kitano, A.Maeda: "The inverse analysis of the enclosed cavity perturbation technique"Physica C. (in press).
[Publications] Y.Togawa, H.Kitano, A.Maeda: "Dynamic phase diagram of driven vortices in Bi2Sr2CaCu2Oy"J.Low Temp.Phys.. (in press).
[Publications] K.Kinoshita et al.: "Microwave conductivity of superconducting and insulating fullerides"J.Low Temp.Phys.. (in press).
[Publications] A.Maeda et al.: "Effect of impurities on the electronic structure of vortex core investigated by microwave surface impedance measurement"J.Low Temp.Phys.. (in press).

2002 Fiscal Year Annual Research Report

ショットノイズ測定による強相関物質の電荷素励起の研究

Principal Investigator

前田 京剛 東京大学, 大学院・総合文化研究科, 助教授 (70183605)

Research Products

[Publications] A.Maeda et al.: "Vortices in high Tc superconductors"in "Vortex Electronics and SQUIDs", edited by T.Kobayashi. (in press).

[Publications] A.Maeda et al.: "Dynamics of vortices in high-Tc superconductors investigated by density and conduction noise measurememts"Sutudies of High Temperature Superconductors, edited by A. Narlikar, Vol.41, Chap.10 (Nova Science Publishers, NY2002). 247-274 (2002)

[Publications] A.Maeda et al.: "Location-sensitive measurement of the local fluctuation of driven vortex density in Bi_2Sr_2CaCu_2Oy"Review B. 65. 54506-54516 (2002)

[Publications] H.Kitano et al.: "Evidence for insulating behavior in the electric conduction (NH_3)K_3C_<60> systems"Phys.Rev.Lett.. 88. 96401-96404 (2002)

[Publications] A.Maeda, Y.Togawa, H.Kitano: "An experimental approach to understand dynamical phase diagram of driven vortices of high-Tc superconductors"Physica C. 369. 177-181 (2002)

[Publications] H.Kitano, A.Maeda: "Comment on "Anomalous dielectric response in the π-d correlated metallic state of λ-(BEDT-TSF)_2FeCl_4"J.Phys.Soc.Japan. 71. 666-667 (2002)

[Publications] K.Takaki et al.: "Effects of superconducting gap anisotropy on the flux flow resistivity in Y(Ni_<1-x>Pt_x)_2B_2C"Phys.Rev.B. 66. 184511-184515 (2002)

[Publications] K.Kinoshita et al.: "Millimeter wave and microwave electrodynamic spectroscopy of YBa_2(Cu_<1-x>Zn_x)_3Oy in the Meissner and mixed state"Physica C. (in press).

[Publications] H.Kitano et al.: "Nonlinear conductivity in the slightly hole-doped Sr_<14-x>Ca_xCu_<24>O_<41> ladder compounds"Physica C. (in press).

[Publications] K.Iwaya et al.: "Electronic state of NbSe_2 investigated by STM/STS"Physica C. (in press).

[Publications] A.Maeda, Y.Togawa, H.Kitano: "Dynamic phase diagram of vortices in high-Tc superconductors determine by experimental studies"Physica C. (in press).

[Publications] R.Inoue, H.Kitano, A.Maeda: "The inverse analysis of the enclosed cavity perturbation technique"Physica C. (in press).

[Publications] Y.Togawa, H.Kitano, A.Maeda: "Dynamic phase diagram of driven vortices in Bi2Sr2CaCu2Oy"J.Low Temp.Phys.. (in press).

[Publications] K.Kinoshita et al.: "Microwave conductivity of superconducting and insulating fullerides"J.Low Temp.Phys.. (in press).

[Publications] A.Maeda et al.: "Effect of impurities on the electronic structure of vortex core investigated by microwave surface impedance measurement"J.Low Temp.Phys.. (in press).

前田京剛東京大学, 大学院・総合文化研究科, 助教授 (70183605)