NEW INTERPRETATION OF 2ND-SOUND MEASUREMENTS AT THE NEMATIC-SMECTIC-ATRANSITION - NONHYDRODYNAMIC BEHAVIOR OF THE LAYER-COMPRESSION ELASTIC-CONSTANT

Authors
MARTINOTY P SONNTAG P BENGUIGUI L COLLIN D
Citation
P. Martinoty et al., NEW INTERPRETATION OF 2ND-SOUND MEASUREMENTS AT THE NEMATIC-SMECTIC-ATRANSITION - NONHYDRODYNAMIC BEHAVIOR OF THE LAYER-COMPRESSION ELASTIC-CONSTANT, Physical review letters, 73(15), 1994, pp. 2079-2082
Citations number
27
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
73
Issue
15
Year of publication
1994
Pages
2079 - 2082
Database
ISI
SICI code
0031-9007(1994)73:15<2079:NIO2MA>2.0.ZU;2-Z
Abstract
We show that second-sound measurements taken in the vicinity of the ne matic-smectic-A transition are not in the hydrodynamic regime as is pr esently thought. A dynamic effect associated with relaxation of critic al fluctuations explains why the layer-compression modulus B deduced f rom these experiments deviates from a simple power law and levels off as T --> T-AN.