Heat capacity measurement of heavy fermion YbCo2Zn20 under magnetic field

R. Yamanaka, K. Matsubayashi, Y. Saiga, Tatsuya Kawae, Y. Uwatoko

研究成果: ジャーナルへの寄稿Conference article

2 引用 (Scopus)

抄録

We have measured the specific heat of heavy fermion YbCo2Zn20 down to 0.1 K under magnetic field up to 3 T. At zero-field, the electronic contribution to the specific heat Ce/T shows logarithmic increase with decreasing temperature and tends to saturate at lower temperature, reflecting the Fermi-liquid state. With increasing magnetic field, Ce/T exhibits a power-law divergence at Hm ∼ 0.6 T, which corresponds to the critical field of the metamagnetic crossover. The field dependence of Ce/T shows the two peak structure and the local minimum point of this structure coincides with Hm as observed in prototypical metamagnetic compound CeRu2Si2. We will compare the characteristic energy scale relevant to the metamagnetic behavior of YbCo2Zn20 and CeRu2Si2.

元の言語英語
記事番号012078
ジャーナルJournal of Physics: Conference Series
391
発行部数1
DOI
出版物ステータス出版済み - 1 1 2012
イベントInternational Conference on Strongly Correlated Electron Systems, SCES 2011 - Cambridge, 英国
継続期間: 8 29 20119 3 2011

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fermions
specific heat
Fermi liquids
magnetic fields
crossovers
divergence
electronics
temperature
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

これを引用

Heat capacity measurement of heavy fermion YbCo2Zn20 under magnetic field. / Yamanaka, R.; Matsubayashi, K.; Saiga, Y.; Kawae, Tatsuya; Uwatoko, Y.

:: Journal of Physics: Conference Series, 巻 391, 番号 1, 012078, 01.01.2012.

研究成果: ジャーナルへの寄稿Conference article

Yamanaka, R. ; Matsubayashi, K. ; Saiga, Y. ; Kawae, Tatsuya ; Uwatoko, Y. / Heat capacity measurement of heavy fermion YbCo2Zn20 under magnetic field. :: Journal of Physics: Conference Series. 2012 ; 巻 391, 番号 1.
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