High-pressure magnetic and structural properties of TiOX (X=Cl,Br) |
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| Authors: | S. Blanco-Canosa F. Rivadulla A. Pi?eiro V. Pardo D. Baldomir M.A. López-Quintela J. Rivas |
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| Affiliation: | 1. Department of Materials Science and Engineering, Pusan National University, Busan 609-735, Republic of Korea;2. Neutron Science Division, HANARO Center, Korea Atomic Energy Research Institute, Daejon 305-353, Republic of Korea;3. Advanced Metallic Materials Division, Korea Institute of Materials Science, Changwon 642-831, Republic of Korea;4. Research and Development Center, KOS Limited, Yangsan 626-230, Republic of Korea |
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| Abstract: | We report high-pressure diffraction and magnetization measurements to demonstrate that the partial collapse of electronic gap at high-pressure insulator to metal transition reported in TiOCl (C. Kuntscher et al. Phys. Rev. B 74 184402 (2006).) corresponds to a Ti3+–Ti3+ dimerization at room temperature within the space group P21/m. The shortest Ti–Ti distance is comparable to that of the Ti metal, but a Peierls-like distortion prevents a metallic behaviour. |
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