Chiral-crystal-structure transformations and magnetic states of R3Rh4Sn13 (R= la and Ce)

Kazuya Suyama, Kazuaki Iwasa, Yuka Otomo, Keisuke Tomiyasu, Hajime Sagayama, Ryoko Sagayama, Hironori Nakao, Reiji Kumai, Yoshinori Kitajima, Françoise Damay, Jean Michel Mignot, Akira Yamada, Tatsuma D. Matsuda, Yuji Aoki

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Structural studies were performed on R3Rh4Sn13 (R=La and Ce). X-ray diffraction measurements on single-crystalline samples of both Rh-based compounds, which were synthesized by the molten Sn-flux method, have revealed structural transformations below TD≃ 350 K. The lowerature superstructures are characterized by the wave vector q=(1/2,1/2,0). The space group in the lowerature phases of both compounds is chiral cubic I213, which is the same as that of R3Co4Sn13 (R=La and Ce). Neutron diffraction measurement of Ce3Rh4Sn13 revealed no magnetic long-range order below the temperature of the specific-heat peaks at 1.2 and 1.8 K. The lowerature magnetic state in the chiral phase is that of a paramagnetic semimetal, whereas the dynamical spin correlation of Ce is deduced from the specific-heat data, as found previously in Ce3Co4Sn13.

Original languageEnglish
Article number235138
JournalPhysical Review B
Volume97
Issue number23
DOIs
Publication statusPublished - 2018 Jun 22

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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