Structural phase transition of vanadium at 69 GPa
2007 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 98, no 8, 085502- p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2007. Vol. 98, no 8, 085502- p.
IdentifiersURN: urn:nbn:se:uu:diva-145833DOI: 10.1103/PhysRevLett.98.085502ISI: 000244420700039OAI: oai:DiVA.org:uu-145833DiVA: diva2:397047