LARGE INCREASE OF THE LOW-FREQUENCY DIELECTRIC-CONSTANT OF GALLIUM SULFIDE UNDER HYDROSTATIC-PRESSURE

Authors
SEGURA A CHEVY A
Citation
A. Segura et A. Chevy, LARGE INCREASE OF THE LOW-FREQUENCY DIELECTRIC-CONSTANT OF GALLIUM SULFIDE UNDER HYDROSTATIC-PRESSURE, Physical review. B, Condensed matter, 49(7), 1994, pp. 4601-4604
Citations number
18
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
49
Issue
7
Year of publication
1994
Pages
4601 - 4604
Database
ISI
SICI code
0163-1829(1994)49:7<4601:LIOTLD>2.0.ZU;2-Y
Abstract
The pressure dependence of the low-frequency dielectric constant of la yered gallium sulfide, parallel to the c axis, is investigated through capacitance measurements. The measured pressure coefficient DELTA(lne psilon(parallel-to))/DELTAP is found to be (80+/-5) X 10(-3) GPa-1. Th is large and positive pressure coefficient is shown to be coherent wit h models of charge transfer from the Ga-Ga intralayer bond to the inte rlayer space under pressure.