^<75>As NQR/NMR Study of Successive Phase Transitions and Energy Gap Formation in Kondo Semiconductor CeRhAs (Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)

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概要

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• <75>^As NQR/NMR studies were performed to investigate the successive phase transitions found recently, the gap formation and their interplay in a Kondo semiconductor CeRhAs. NQR/NMR spectra in their respective phases change, reflecting lattice modulation modes, q_1 = (0,1/2,1/2), q_2 = (0,1/3,1/3) and q_3 = (1/3,0,0). In particular for well-resolved three NQR lines corresponding to the q_3 mode in the lowest temperature phase, the nuclear spin-lattice relaxation rate (T_1T)^<-1> shows an activation type T-dependence, suggesting a gap opening over the entire Fermi surface, in contrast to the V-shaped gap in isostructural CeNiSn and CeRhSb. The evaluated gap of 272 K and the bandwidth of about 4000 K are one order of magnitude larger than those in CeNiSn and CeRhSb. A lattice modulation forms a gap different from the V-shaped gap.

• 社団法人日本物理学会の論文
• 2003-05-15

著者

• 世良 正文

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

• TOU Hideki

  Department of Quantum Matter, AdSM, Hiroshima University

• SERA Masafumi

  Department of Quantum Matter, AdSM, Hiroshima University

• TAKABATAKE Toshiro

  Department of Quantum Matter,Graduate School of Advanced Science of Matter,Hiroshima University

• Sera Masafumi

  Department Of Physics Tohoku University:institute For Molecular Science

• Sera M

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

• Sera M

  Department Of Quantum Matter Adsm Hiroshima University

• Sera Masafumi

  Department Of Physics Nagoya University

• Sera Masafumi

  Department Of Physics Faculty Of Science Nagoya University

• Tou Hideki

  Kobe Univ. Kobe Jpn

• Tou H

  Osaka Univ. Toyonaka

• Tou Hideki

  Department Of Physics Tokyo Metropolitan University

• Tou Hideki

  Department Of Material Physics Faculty Of Engineering Science Osaka University

• Takabatake Toshirou

  Department Of Quantum Matter Adsm Hiroshima University

• SASAKAWA Tetsuya

  Department of Quamtam Matter, ADSM, Hiroshima University

• Sasakawa Tetsuya

  Graduate School Of Advanced Sciences Of Matter Hiroshima University

• Sasakawa T

  Department Of Quantum Matter Adsm Hiroshima University

• MATSUMURA Masahiro

  Department of Physics, Kobe University

• TSUJI Shigenori

  Department of Quantum Matter, ADSM, Hiroshima University

• Takabatake Toshiro

  Department Of Quantum Matter Adsm Hiroshima University

• Tsuji Shigenori

  Cryogenic Center Hiroshima University

• Tsuji Shigenori

  Department Of Quantum Matter Adsm Hiroshima University

• Tsuji Shigenori

  Department Of Physics Graduate School Of Science Hokkaido University:(present) Cryogenic Center Hiro

• Matsumura M

  Faculty Of Science Kochi University

• Matsumura Masahiro

  Department Of Material Science Faculty Of Science Kochi University

• Sawada M

  Hiroshima Synchrotron Radiation Center Hiroshima University

• Tsuji S

  Department Of Quantum Matter Adsm Hiroshima University

• Sera M

  Institute Of Materials Structure Science High Energy Accelerator Research Organization (kek)

• Saita Tetsuro

  Graduate School Of Engineering Science Osaka University

• Matsumura Masahiro

  Faculty Of Science Kochi University

• Matsumura Masahiro

  Department Of Physics Faculty Of Science Kouchi University

• Sasagawa Takao

  Graduate School Of Frontier Sciences University Of Tokyo

• Tokumoto H

  Department Of Quantum Matter Adsm Hiroshima University

• Sasakawa Tetsuya

  Department Of Quamtam Matter Adsm Hiroshima University

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