تقرير
Pressure suppression of unconventional charge-density-wave state in PrRu4P12 studied by optical conductivity
| العنوان: | Pressure suppression of unconventional charge-density-wave state in PrRu4P12 studied by optical conductivity |
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| المؤلفون: | Okamura, H., Ohta, N., Takigawa, A., Matsutori, I., Shoji, K., Miyata, K., Matsunami, M., Sugawara, H., Sekine, C., Shirotani, I., Sato, H., Moriwaki, T., Ikemoto, Y., Liu, Z., Carr, G. L. |
| المصدر: | Phys. Rev. B 85 (2012) 205115 |
| سنة النشر: | 2012 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons |
| الوصف: | Optical conductivity s(w) of PrRu4P12 has been studied under high pressure to 14 GPa, at low temperatures to 8 K, and at photon energies 12 meV-1.1 eV. The energy gap in s(w) at ambient pressure, caused by a metal-insulator transition due to an unconventional charge-density-wave formation at 63 K, is gradually filled in with increasing pressure to 10 GPa. At 14 GPa and below 30 K, s(w) exhibits a pronounced Drude-type component due to free carriers. This indicates that the initial insulating ground state at zero pressure has been turned into a metallic one at 14 GPa. This is consistent with a previous resistivity study under pressure, where the resistivity rapidly decreased with cooling below 30 K at 14 GPa. The evolution of electronic structure with pressure is discussed in terms of the hybridization between the 4f and conduction electrons. Comment: 7 pages, 6 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.85.205116 |
| URL الوصول: | http://arxiv.org/abs/1202.3007 |
| رقم الأكسشن: | edsarx.1202.3007 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.85.205116 |
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