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Femtosecond pump and probe spectroscopy in Bi under high pressure
Author(s) -
Kasami M.,
Mishina T.,
Nakahara J.
Publication year - 2004
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200405222
Subject(s) - phonon , femtosecond , hydrostatic pressure , phase transition , bismuth , spectroscopy , phase (matter) , materials science , hydrostatic equilibrium , high pressure , condensed matter physics , terahertz radiation , chemistry , optics , optoelectronics , laser , physics , thermodynamics , organic chemistry , quantum mechanics , metallurgy
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. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)