New Magnetic State in Incommensurate Magnetic Phase of Heavy-Fermion Superconductor CeRh<SUB>0.6</SUB>Co<SUB>0.4</SUB>In<SUB>5</SUB>

• Yokoyama Makoto

  Faculty of Science, Ibaraki University

• Amitsuka Hiroshi

  Graduate School of Science, Hokkaido University

• Matsuda Kei

  Graduate School of Science, Hokkaido University

• Gawase Akifumi

  Graduate School of Science, Hokkaido University

• Oyama Narumi

  Faculty of Science, Ibaraki University

• Kawasaki Ikuto

  Graduate School of Science, Hokkaido University

• Tenya Kenichi

  Graduate School of Science, Hokkaido University

• Yoshizawa Hideki

  Neutron Science Laboratory, Institute for Solid State Physics, The University of Tokyo

Bibliographic Information

Other Title

• New Magnetic State in Incommensurate Magnetic Phase of Heavy-Fermion Superconductor CeRh0.6Co0.4In5

Abstract

We performed elastic neutron scattering experiments on solid solution CeRh_1−xCo_xIn₅ with x=0.4 to clarify the nature of the antiferromagnetic (AF) phase in the vicinity of the quantum critical point. We observed the incommensurate AF order below T_Nh=3.5 K. The structure of the incommensurate AF order is basically unchanged from that for pure CeRhIn₅. We further found the evolution of a new commensurate AF order with the modulation of q_c=(1⁄2,1⁄2,1⁄2) below T_Nc=2.9 K. The volume-averaged moments for the incommensurate and commensurate AF phases are 0.38 μ_B/Ce and 0.21 μ_B/Ce, respectively, which are reduced from the incommensurate AF moment (0.75 μ_B/Ce) for pure CeRhIn₅. We suggest from these results that the commensurate magnetic correlation may be tightly coupled with the superconductivity observed below T_c=1.4 K.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 75 (10), 103703-103703, 2006

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• heavy-fermion system
• superconductivity
• magnetism
• neutron scattering
• CeRhIn<SUB>5</SUB>
• CeCoIn<SUB>5</SUB>

Details

• CRID: 1390282679166799104
• NII Article ID: 110004821496
• NII Article ID: 210000106345
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.75.103703
• BIBCODE: 2006JPSJ...75j3703Y
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 8085076
• Web Site: http://id.ndl.go.jp/bib/8085076
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8085076
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.75.103703
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed