Published December 16, 2002
| Version v1
Journal article
High-frequency acoustic modes in liquid gallium at the melting point
- 1. Dipartimento di Fisica and INFM, Universita di Roma 'La Sapienza', I-00185, Rome (Italy)
- 2. Dipartimento di Fisica and INFM, Universita di L'Aquila, I-67010, L'Aquila (Italy)
- 3. European Synchrotron Radiation Facility, B.P. 220 F-38043 Grenoble, Cedex France (France)
Description
The microscopic dynamics in liquid gallium at melting has been studied by inelastic x-ray scattering. We demonstrate the existence of acousticlike modes up to wave vectors above one-half of the first maximum of the static structure factor, at variance with earlier results from inelastic neutron scattering [F. J. Bermejo et al., Phys. Rev. E 49, 3133 (1994)]. Despite structural (extremely rich polymorphism) and electronic (mixed valence) peculiarities, the collective dynamics is strikingly similar to the one of van der Waals and metallic fluids. This result speaks in favor of the universality of the short time dynamics in monatomic liquids rather than of system-specific dynamics
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 89
- Journal Issue
- 25
- Journal Page Range
- p. 255506-255506.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 35031838
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- EXCITED STATES; GALLIUM; LIQUID METALS; SMALL ANGLE SCATTERING; STRUCTURE FUNCTIONS; VAN DER WAALS FORCES; X-RAY DIFFRACTION
- Descriptors DEC
- COHERENT SCATTERING; DIFFRACTION; ELEMENTS; ENERGY LEVELS; FLUIDS; FUNCTIONS; LIQUIDS; METALS; SCATTERING
Optional Information
- Notes
- (c) 2002 The American Physical Society