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Structural phase tr...
Structural phase transition of vanadium at 69 GPa
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Ding, Yang (author)
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- Ahuja, Rajeev (author)
- Uppsala universitet,Fysiska institutionen,Condensed Matter Theory Group
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Shu, Jinfu (author)
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Chow, Paul (author)
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- Luo, Wei (author)
- Uppsala universitet,Fysiska institutionen,Condensed Matter Theory Group
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Mao, Ho-kwang (author)
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(creator_code:org_t)
- 2007
- 2007
- English.
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In: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 98:8
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- A phase transition was observed at 63-69 GPa and room temperature in vanadium with synchrotron x-ray diffraction. The transition is characterized as a rhombohedral lattice distortion of the body-centered-cubic vanadium without a discontinuity in the pressure-volume data, thus representing a novel type of transition that has never been observed in elements. Instead of driven by the conventional s-d electronic transition mechanism, the phase transition could be associated with the softening of C-44 trigonal elasticity tensor that originates from the combination of Fermi surface nesting, band Jahn-Teller distortion, and electronic topological transition.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Elastic-constants
- high-pressures
- electronic-structure
- crystal-structure
- lattice-dynamics
- single-crystals
- ab-initio
- bcc
- nb
- state
- TECHNOLOGY
- TEKNIKVETENSKAP
- Physics
Publication and Content Type
- ref (subject category)
- art (subject category)
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