Characteristic magnetic phase diagram in heavy-fermion compound YbCo 2Zn20

T. Takeuchi, S. Yoshiuchi, M. Ohya, M. Matsushita, S. Yasui, Y. Hirose, K. Sugiyama, F. Honda, R. Settai, Y. Onuki

Research output: Contribution to journalConference articlepeer-review

Abstract

We studied the magnetic field versus temperature phase diagram of the heavy-fermion compound YbCo2Zn20 with the cubic CeCr2Al20-type structure by measuring the specific heat, ac-susceptibility, and electrical resistivity under magnetic fields. In a low magnetic field region, a metamagnetic behavior was observed at Hm 6 kOe for three principal field directions below Tχmax 0.32 K, at which the temperature dependence of ac-susceptibility shows a local broad maximum. Two crossover lines were found below and above Hm. At high magnetic fields, the heavy-fermion state was rapidly suppressed with increasing magnetic field, and the field-induced ordered phase appeared in a very limited field direction around H || 111 above the transition field HQ= 60 kOe in the temperature range below TQ = 0.6 K.

Original languageEnglish
Article number012072
JournalJournal of Physics: Conference Series
Volume391
Issue number1
DOIs
Publication statusPublished - 2012
Externally publishedYes
EventInternational Conference on Strongly Correlated Electron Systems, SCES 2011 - Cambridge, United Kingdom
Duration: Aug 29 2011Sep 3 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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