Fermi surface of thru2si2 as a reference to the strongly correlated isostructural metals investigated by quantum oscillations

Yuji Matsumoto, Yoshinori Haga, Naoyuki Tateiwa, Haruyoshi Aoki, Noriaki Kimura, Tomoo Yamamura, Etsuji Yamamoto, Tatsuma D. Matsuda, Zachary Fisk, Hiroshi Yamagami

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We have successfully grown a high-quality single crystal of ThRu2Si2 with the residual resistivity ratio (RRR) of 120, which is a reference compound to the heavy-fermion systems CeRu2Si2 and URu2Si2 crystallizing in the tetragonal ThCr2Si2-Type structure, and observed the quantum oscillations (de Haas-van Alphen effect). The result is compared with the Fermi surfaces of CeRu2Si2 and URu2Si2 as well as the band structure calculations. The main features of Fermi surface topology of ThRu2Si2 are similar to those of the heavy-fermion compound CeRu2Si2, indicating that the 4 f electron in CeRu2Si2 contributes to the conduction band. On the other hand, the Fermi surfaces of ThRu2Si2 significantly differ from those obtained for URu2Si2, suggesting the itinerant nature of 5 f electrons rather than the conventionally assumed localized 5 f 2 configuration.

Original languageEnglish
Article number709
Journaljournal of the physical society of japan
Volume85
Issue number10
DOIs
Publication statusPublished - 2016 Oct 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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