Femtosecond pump and probe spectroscopy in Bi under high pressure
| Autor: | M. Kasami, J. Nakahara, Tomobumi Mishina |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Phase transition
Condensed matter physics Chemistry Terahertz radiation Phonon Hydrostatic pressure chemistry.chemical_element Condensed Matter Physics Electronic Optical and Magnetic Materials Bismuth Condensed Matter::Materials Science Condensed Matter::Superconductivity High pressure Femtosecond Condensed Matter::Strongly Correlated Electrons Spectroscopy |
| Zdroj: | physica status solidi (b). 241:3113-3116 |
| ISSN: | 1521-3951 0370-1972 |
| DOI: | 10.1002/pssb.200405222 |
| Popis: | We have observed coherent phonons and electronic response in bismuth single crystals under hydrostatic pressure up to 3 GPa at room temperature. Both signals show drastic changes at 2.5 GPa where phase transition occurs. The phonon frequency decreases from 2.9 THz to 2.5 THz and the initial phase of the phonon shifts about 180 degrees at this pressure. The electronic response shows anomalous behaviour above phase transition pressure. |
| Databáze: | OpenAIRE |
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