High field x-ray diffraction study on a magnetic-field-induced valence transition in YbInCu4

Y. H. Matsuda; T. Inami; K. Ohwada; Y. Murata; H. Nojiri; Y. Murakami; H. Ohta; W. Zhang; K. Yoshimura

doi:10.1143/JPSJ.75.024710

High field x-ray diffraction study on a magnetic-field-induced valence transition in YbInCu4

Strongly Correlated Electrons 2009-11-11 v1 Materials Science

Authors: Y. H. Matsuda , T. Inami , K. Ohwada , Y. Murata , H. Nojiri , Y. Murakami , H. Ohta , W. Zhang , K. Yoshimura

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Abstract

We report the first high-field x-ray diffraction experiment using synchrotron x-rays and pulsed magnetic fields exceeding 30 T. Lattice deformation due to a magnetic-field-induced valence transition in YbInCu4 is studied. It has been found that the Bragg reflection profile at 32 K changes significantly at around 27 T due to the structural transition. In the vicinity of the transition field the low-field and the high-field phases are observed simultaneously as the two distinct Bragg reflection peaks: This is a direct evidence of the fact that the field-induced valence state transition is the first order phase transition. The field-dependence of the low-field-phase Bragg peak intensity is found to be scaled with the magnetization.

Keywords

high-field x-ray diffraction magnetic-field-induced valence transition YbInCu4 Bragg reflection first-order phase transition

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@article{arxiv.cond-mat/0508244,
  title  = {High field x-ray diffraction study on a magnetic-field-induced valence transition in YbInCu4},
  author = {Y. H. Matsuda and T. Inami and K. Ohwada and Y. Murata and H. Nojiri and Y. Murakami and H. Ohta and W. Zhang and K. Yoshimura},
  journal= {arXiv preprint arXiv:cond-mat/0508244},
  year   = {2009}
}

Comments

5 pages, 6 figures, submitted to J. Phys. Soc. Jpn

High field x-ray diffraction study on a magnetic-field-induced valence transition in YbInCu4

Abstract

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