De Haas-van alphen effect and fermi surface properties in YbTIn5 (T: Co, Rh, Ir) and YbCoGa5

Jyunya Sakaguchi, Hiroki Tsutsumi, Yusuke Hirose, Yasunao Miura, Fuminori Honda, Hisatomo Harima, Rikio Settai, Yoshichika Onuki

Research output: Contribution to journalArticlepeer-review


We measured the de Haas-van Alphen oscillation in divalent compounds YbTIn5 (T : Co, Rh, Ir) and YbCoGa5. The Fermi surfaces, which are characteristic in two kinds of nearly cylindrical Fermi surface, are approximately unchanged in these compounds and are well explained by the results of energy band calculations. The cyclotron mass is found to increase remarkably as the average lattice constant decreases from 5.4 Å in YbIrIn 5 to 5.2 Å in YbCoGa5: m*c = 1.1m0 in YbIrIn5 and 5.1m0 in YbCoGa 5 for dHvA branch β1, revealing a chemical pressure effect. There exists the hybridization between 4 f electrons and conduction electrons in YbCoGa5.

Original languageEnglish
Article numberSB059
Journaljournal of the physical society of japan
Issue numberSUPPL.B
Publication statusPublished - 2012 Sep


  • Dhva
  • Energy band calculation
  • Fermi surface

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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