Pressure Effect on Superconductivity and Antiferroquadrupolar Order in PrOs_4Sb_<12>(Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)

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概要

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• We report the results of the low-temperature dc magnetization measurements of PrOs_4Sb_<12> under hydrostatic pressures up to 1.45GPa. The pressure effect on the temperature dependence of magnetization and the magnetic phase diagram reveals that the crystal field energy splitting of a Γ_1 singlet ground state and a Γ^<(2)>_4 triplet first exited state decreases with an increase in pressure, whereas the two superconducting transition temperatures along with the upper critical field decrease significantly. Our results suggest that the low-field superconducting state competes with the high-field antiferroquadrupolar ordered state.

• 社団法人日本物理学会の論文
• 2006-04-15

著者

• TAYAMA Takashi

  Institute for Solid State Physics, University of Tokyo

• SAKAKIBARA Toshiro

  Institute for Solid State Physics, University of Tokyo

• SUGAWARA Hitoshi

  Faculty of Integrated Arts and Sciences, The University of Tokushima

• SATO Hideyuki

  Department of Physics, Tokyo Metropolitan University

• Takagi S

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

• Suzuki T

  Fac. Of Engineering Kyushu Inst. Of Technol. Kitakyushu 804-8550 Jpn

• Tsutsui Satoshi

  Department Of Materials Science And Technology Iwate University

• SUDA Toshimi

  The Institute of Physical and Chemical Research

• Shiba Haruya

  Department Of Electrical And Electronic Engineering Faculty Of Engineering The University Of Tokushi

• Susaki Tomofumi

  Department Of Physics And Department Of Complexity Science And Engineering University Of Tokyo:(pres

• Sakakibara Toshiro

  Institute For Solid State Physics The University Of Tokyo

• Tayama Takashi

  Institute For Solid State Physics University Of Tokyo

• Sugawara Hitoshi

  Faculty Of Engineering Iwate University

• Suzuki T

  Graduate School Of Science And Technology Chiba University

• Shiozawa Hidetsugu

  Department Of Physics Tokyo Metropolitan 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

• Sato H

  Department Of Analytical Chemistry Faculty Of Engineering Yokohama National University

• Sato Hideyuki

  Graduate School Of Science Tokyo Metropolitan University

• Suzuki Takashi

  Institute For Solid State Physics University Of Tokyo

• Sato Hideyuki

  Department Of Cardiology Osaka University Graduate School Of Medicine

• Sato Hideyuki

  Department Of Applied Chemistry Faculty Of Science And Technology Keio University

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