Cu-NQR of CeCu2Si2 under high pressure

K. Fujiwara, M. Iwata, Y. Okazaki, Y. Ikeda, S. Araki, T. C. Kobayashi, K. Murata, C. Geibel, F. Steglich

Research output: Contribution to journalConference article

7 Citations (Scopus)

Abstract

We have measured 63Cu-NQR spectral lines and nuclear spin-lattice relaxation time T1 under pressure up to 5.4 GPa. Daphne oil 7474 is used as the pressure-transmitting medium to obtain good hydrostaticity. NQR frequency 63νq above 4 GPa suddenly decreases from the linear pressure dependence in the low pressure range (P ≤ 3.5 GPa). The observed sudden downward deviation of 63νq is associated with an increase of Ce valence. Above 4.5 GPa, the linear pressure dependence of 63νq is observed again, most likely related to the sharp crossover to the high valence state.

Original languageEnglish
Article number012012
JournalJournal of Physics: Conference Series
Volume391
Issue number1
DOIs
Publication statusPublished - 2012 Jan 1
Externally publishedYes
EventInternational Conference on Strongly Correlated Electron Systems, SCES 2011 - Cambridge, United Kingdom
Duration: 2011 Aug 292011 Sep 3

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Fujiwara, K., Iwata, M., Okazaki, Y., Ikeda, Y., Araki, S., Kobayashi, T. C., Murata, K., Geibel, C., & Steglich, F. (2012). Cu-NQR of CeCu2Si2 under high pressure. Journal of Physics: Conference Series, 391(1), [012012]. https://doi.org/10.1088/1742-6596/391/1/012012