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

doi:10.1088/1742-6596/391/1/012012

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 journal › Conference 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 language	English
Article number	012012
Journal	Journal of Physics: Conference Series
Volume	391
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/391/1/012012
Publication status	Published - 2012 Jan 1
Externally published	Yes
Event	International Conference on Strongly Correlated Electron Systems, SCES 2011 - Cambridge, United Kingdom Duration: 2011 Aug 29 → 2011 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

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title = "Cu-NQR of CeCu2Si2 under high pressure",

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.",

author = "K. Fujiwara and M. Iwata and Y. Okazaki and Y. Ikeda and S. Araki and Kobayashi, {T. C.} and K. Murata and C. Geibel and F. Steglich",

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doi = "10.1088/1742-6596/391/1/012012",

language = "English",

volume = "391",

journal = "Journal of Physics: Conference Series",

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note = "International Conference on Strongly Correlated Electron Systems, SCES 2011 ; Conference date: 29-08-2011 Through 03-09-2011",

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T1 - Cu-NQR of CeCu2Si2 under high pressure

AU - Fujiwara, K.

AU - Iwata, M.

AU - Okazaki, Y.

AU - Ikeda, Y.

AU - Araki, S.

AU - Kobayashi, T. C.

AU - Murata, K.

AU - Geibel, C.

AU - Steglich, F.

PY - 2012/1/1

Y1 - 2012/1/1

N2 - 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.

AB - 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.

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