Opacity of KCl single crystal shocked above the transition pressure

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Abstract

Strong absorption of light by shock-transformed KCl (potassium chloride) single crystal has been used for measurement of electrical conductivity of its high-pressure B2 phase. The obtained conductivity values allow the determination of the width W of the gap between the valence and the conduction bands and its dependence W = W0(1 - bε) on the compressive strain ε. The values of the gap width W0 = 0.49±0.06eV and of the parameter b = 1.4±0.4 lead to the conclusion that KCl in its high-pressure modification is a semiconductor.

Original languageEnglish
Pages (from-to)1640-1642
Number of pages3
JournalApplied Physics Letters
Volume79
Issue number11
DOIs
StatePublished - 10 Sep 2001

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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