Thermodynamic and Transport Properties of CeMg_2Cu_9 under Pressure(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)

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概要

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• We report the transport and thermodynamic properties under hydrostatic pressure in the antiferromagnetic Kondo compound CeMg_2Cu_9 with a two-dimensional arrangement of Ce atoms. Magnetic specific heat C_<mag>(T) shows a Schottky-type anomaly around 30 K originating from the crystal electric field (CEF) splitting of the 4f state with the first excited level at Δ_1/k_B = 58 K and the second excited level at Δ_2/k_B = 136 K from the ground state. Electric resistivity shows a two-peak structure due to the Kondo effect on each CEF level around T^<max>_1 = 3 K and T^<max>_2 = 40 K. These peaks merge around 1.9GPa with compression. With increasing pressure, Neel temperature T_N initially increases and then changes to decrease. T_N finally disappears at a quantum critical point P_c = 2.4 Gpa.

• 社団法人日本物理学会の論文
• 2004-08-15

著者

• 鈴木 孝

  Graduate School Of Engineering Science Osaka University

• SUZUKI Takashi

  Department of Biochemistry, University of Shizuoka, School of Pharmaceutical Sciences, Core Research

• Takagi S

  Department Of Quantum Matter Graduate School Of Advanced Sciences Of Matter Hiroshima University

• 藤田 敏三

  Department Of Quantum Matter Adsm Hiroshima University

• 藤田 敬三

  広大・理

• Ito Masakazu

  Department of Applied Science, Faculty of Engineering, Kyushu University

• Tsutsui Satoshi

  Japan Synchrotron Radiation Research Institute Spring-8

• 鈴木 直

  大阪大学大学院基礎工学研究科

• ASADA Koji

  Department of Quantum Matter, ADSM, Hiroshima University

• NAKAMORI Yuko

  Faculty of Integrated Arts & Sciences, Hiroshima University

• FUJII Hironobu

  Natural Science Center for Basic Research and Development, Materials Science Center, Hiroshima Unive

• NAKAMURA Fumihiko

  Department of Quantum Matter, ADSM, Hiroshima University

• FUJITA Toshizo

  Department of Quantum Matter, ADSM, Hiroshima University

• 榊原 俊雄

  東大物性研

• 鈴木 孝

  東北大 理

• 藤田 敏三

  広大先端

• Fujimura Tadao

  Research Institute For Scientific Measurements And Department Of Physics Tohoku University

• Fujita Toshizo

  Department Of Quantum Matter Adsm Hiroshima University

• Nakamura F

  Department Of Quantum Matter Adsm Hiroshima University

• Asada Koji

  Department Of Quantum Matter Adsm Hiroshima University

• Tsutsui Satoshi

  Department Of Materials Science And Technology Iwate University

• Suzuki T

  Issp University Of Tokyo

• Nakamori Y

  Faculty Of Integrated Arts & Sciences Hiroshima University:(present Address)institute For Materi

• Nakamori Yuko

  Physics Laboratory Department Of Science Education Facult Of Education Hiroshima University:(present

• Fujii Hironobu

  Natural Science Center For Basic Research And Development Hiroshima University

• Sasaki T

  Center For Geo-environmental Science Faculty Of Engineering And Resource Science Akita University

• SUDA Toshimi

  The Institute of Physical and Chemical Research

• Tatsuoka Sho

  Graduate School Of Science Tokyo Metropolitan University

• Suzuki N

  Riken (inst. Physical And Chemical Res.) Saitama

• Suzuki N

  Osaka Univ. Osaka Jpn

• Suzuki Naoshi

  Department Of Material Physics Osaka University

• Sugaya Takashi

  Issp University Of Tokyo

• Fujita Takaaki

  Kyushu University

• Masakazu Ito

  Department Of Quantum Matter Adsm Hiroshima University

• Fujita Toshizo

  Department Of Physics Faculty Of Faculty Of Science Hiroshima University

• Sakon Takuo

  Department Of Physics Faculty Of Science Tohoku University

• Fujita Toshiaki

  Department Of Physics Division Of Material Science Nagoya University

• Fujita Toshiaki

  Department Of Applied Physics Faculty Of Engineering Hiroshima University

• Suzuki T

  Graduate School Of Science And Technology Chiba University

• Fujiwara Tabito

  Kyokugen Osaka University

• Tsutsui Satoshi

  Department Of Material Physics Faculty Of Engineering Science Osaka University

• Suzuki Taira

  Department Of Mterials Science And Technology Science University Of Tokyo

• Fukamachi T

  Department Of Physics Division Of Material Science Nagoya University

• Fukamachi Toshihiko

  Nanoelectronics Collaborative Research Center Institute Of Industrial Science University Of Tokyo

• Suzuki Takashi

  Department Of Biochemistry University Of Shizuoka School Of Pharmaceutical Sciences:core Research Fo

• Sasagawa Takao

  Graduate School Of Frontier Sciences University Of Tokyo

• FUJITA Takeyoshi

  Department of Mechanical Engineering,Faculty of Engineering,Kansai University

• Shima Tatsushi

  Rcnp Osaka University

• Ito Masakazu

  Department Of Applied Science Faculty Of Engineering Kyushu University

• Saito Takashi

  Institute For Chemical Research Kyoto University

• Nakamura Fumihiko

  Department Of Civil Engineering Yokohama National University

• Hori Jyun'ya

  Department Of Quantum Matter Adsm Hiroshima University

• Suzuki Takashi

  Department Of Anesthesia Showa University Northern Yokohama Hospital

• Suzuki Takashi

  Department Of Anatomic Pathology Tohoku University School Of Medicine

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