Pair distribution function analysis: The role of structural degrees of freedom in the high-pressure insulator to metal transition of VO2

M. Baldini; P. Postorino; L. Malavasi; C. Marini; K. W. Chapman; Ho Kwang Mao

doi:10.1103/PhysRevB.93.245137

Pair distribution function analysis: The role of structural degrees of freedom in the high-pressure insulator to metal transition of VO2

M. Baldini
, P. Postorino
, L. Malavasi
, C. Marini
, K. W. Chapman
, Ho Kwang Mao

Chemistry

United States Department of Energy
University of Rome La Sapienza
University of Pavia
CELLS - ALBA
Carnegie Institution of Washington
Center for High Pressure Science & Technology Advanced Research

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

10 Scopus citations

Abstract

The evolution of the local structure of VO2 was investigated across the pressure-induced insulator to metal transition (IMT) by means of pair distribution function measurements. The pressure behavior of the V-V and V-O bond lengths have been determined. The data demonstrated that the pressure-driven IMT is not activated by the suppression of the Peierls-type distortion. A clear octahedra symmetrization is observed in the metallic phase, suggesting a link between structural degree of freedom and the metallization process.

Original language	English
Article number	245137
Journal	Physical Review B
Volume	93
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.93.245137
State	Published - Jun 17 2016

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10.1103/PhysRevB.93.245137

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title = "Pair distribution function analysis: The role of structural degrees of freedom in the high-pressure insulator to metal transition of VO2",

abstract = "The evolution of the local structure of VO2 was investigated across the pressure-induced insulator to metal transition (IMT) by means of pair distribution function measurements. The pressure behavior of the V-V and V-O bond lengths have been determined. The data demonstrated that the pressure-driven IMT is not activated by the suppression of the Peierls-type distortion. A clear octahedra symmetrization is observed in the metallic phase, suggesting a link between structural degree of freedom and the metallization process.",

author = "M. Baldini and P. Postorino and L. Malavasi and C. Marini and Chapman, \{K. W.\} and Mao, \{Ho Kwang\}",

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AU - Baldini, M.

AU - Postorino, P.

AU - Malavasi, L.

AU - Marini, C.

AU - Chapman, K. W.

AU - Mao, Ho Kwang

PY - 2016/6/17

Y1 - 2016/6/17

N2 - The evolution of the local structure of VO2 was investigated across the pressure-induced insulator to metal transition (IMT) by means of pair distribution function measurements. The pressure behavior of the V-V and V-O bond lengths have been determined. The data demonstrated that the pressure-driven IMT is not activated by the suppression of the Peierls-type distortion. A clear octahedra symmetrization is observed in the metallic phase, suggesting a link between structural degree of freedom and the metallization process.

AB - The evolution of the local structure of VO2 was investigated across the pressure-induced insulator to metal transition (IMT) by means of pair distribution function measurements. The pressure behavior of the V-V and V-O bond lengths have been determined. The data demonstrated that the pressure-driven IMT is not activated by the suppression of the Peierls-type distortion. A clear octahedra symmetrization is observed in the metallic phase, suggesting a link between structural degree of freedom and the metallization process.

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DO - 10.1103/PhysRevB.93.245137

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Pair distribution function analysis: The role of structural degrees of freedom in the high-pressure insulator to metal transition of VO2

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