Lattice-Symmetry-Driven Phase Competition in Vanadium Dioxide

Conference · Sat Jan 01 00:00:00 EST 2011

OSTI ID:1033147

Tselev, Alexander ^[1]; Luk'yanchuk, Prof. Igor A. ^[2]; Ivanov, Ilia N ^[1]; Budai, John D ^[1]; Tischler, Jonathan Zachary ^[1]; Strelcov, Evgheni ^[3]; Kolmakov, Andrei ^[3]; Kalinin, Sergei V ^[1]

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1. ORNL
2. University of Picardie Jules Verne, Amiens, France
3. Southern Illinois University

We performed group-theoretical analysis of the symmetry relationships between lattice structures of R, M1, M2, and T phases of vanadium dioxide in the frameworks of the general Ginzburg-Landau phase transition theory. The analysis leads to a conclusion that the competition between the lower-symmetry phases M1, M2, and T in the metal-insulator transition is pure symmetry driven, since all the three phases correspond to different directions of the same multi-component structural order parameter. Therefore, the lower-symmetry phases can be stabilized in respect to each other by small perturbations such as doping or stress.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1033147
• Resource Relation: Conference: 2010 MRS Fall Meeting, Boston, MA, USA, 20101129, 20101129
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ORDER PARAMETERS
SYMMETRY
VANADIUM