Charge density anomalies in Si and InSb preceding the high pressure transition

D. R. Yoder-Short; R. Colella; B. A. Weinstein

doi:10.1016/0378-4363(83)90589-2

Charge density anomalies in Si and InSb preceding the high pressure transition

D. R. Yoder-Short
, R. Colella
, B. A. Weinstein

Physics

Purdue University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The intensity of the (222) forbidden x-ray reflection in Si and InSb was measured as a function of high hydrostatic pressure. A few kbars prior to the pressure induced transformation to the metallic β-Sn structure the (222) intensity decreases sharply. We interpret this anomalous behavior as due either to smearing of the valence bond-charge in anticipation of the metallic state, or to increased anharmonicity in the thermal vibrations. The role of zone boundary TA phonons is considered.

Original language	English
Pages (from-to)	565-566
Number of pages	2
Journal	Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
Volume	117-118
Issue number	PART 2
DOIs	https://doi.org/10.1016/0378-4363(83)90589-2
State	Published - Mar 1983

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title = "Charge density anomalies in Si and InSb preceding the high pressure transition",

abstract = "The intensity of the (222) forbidden x-ray reflection in Si and InSb was measured as a function of high hydrostatic pressure. A few kbars prior to the pressure induced transformation to the metallic β-Sn structure the (222) intensity decreases sharply. We interpret this anomalous behavior as due either to smearing of the valence bond-charge in anticipation of the metallic state, or to increased anharmonicity in the thermal vibrations. The role of zone boundary TA phonons is considered.",

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AU - Colella, R.

AU - Weinstein, B. A.

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N2 - The intensity of the (222) forbidden x-ray reflection in Si and InSb was measured as a function of high hydrostatic pressure. A few kbars prior to the pressure induced transformation to the metallic β-Sn structure the (222) intensity decreases sharply. We interpret this anomalous behavior as due either to smearing of the valence bond-charge in anticipation of the metallic state, or to increased anharmonicity in the thermal vibrations. The role of zone boundary TA phonons is considered.

AB - The intensity of the (222) forbidden x-ray reflection in Si and InSb was measured as a function of high hydrostatic pressure. A few kbars prior to the pressure induced transformation to the metallic β-Sn structure the (222) intensity decreases sharply. We interpret this anomalous behavior as due either to smearing of the valence bond-charge in anticipation of the metallic state, or to increased anharmonicity in the thermal vibrations. The role of zone boundary TA phonons is considered.

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DO - 10.1016/0378-4363(83)90589-2

M3 - Article

AN - SCOPUS:49049129006

SN - 0378-4363

VL - 117-118

SP - 565

EP - 566

JO - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics

JF - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics

IS - PART 2

ER -

Charge density anomalies in Si and InSb preceding the high pressure transition

Abstract

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