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Structural Stability and Electronic Properties of the I41/amd Vanadium Dioxide
被引:0
作者:
Wang Cheng-Long
[1
,2
]
Liu Guang-Hua
[1
,2
]
Chen Ying
[2
]
Mo Guang
[3
]
机构:
[1] Tianjin Polytech Univ, State Key Lab Separat Membranes & Membrane Proc, Tianjin 300387, Peoples R China
[2] Tianjin Polytech Univ, Dept Phys, Tianjin 300387, Peoples R China
[3] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China
关键词:
structural stability;
electronic properties;
vanadium dioxide;
DENSITY-FUNCTIONAL THEORY;
MOTT-HUBBARD;
1ST-PRINCIPLES CALCULATIONS;
TRANSITION MECHANISM;
POPULATION ANALYSIS;
VO2;
PEIERLS;
RUTILE;
VIEW;
D O I:
10.14102/j.cnki.0254-5861.2011-1469
中图分类号:
O61 [无机化学];
学科分类号:
070301 ;
081704 ;
摘要:
By using LDA+U approach based on the density functional theory, the structural stability of I4(1)/amd VO2 is investigated. According to the phonon dispersion and stability criteria, the I4(1)/amd is suggested to be another possible and stable structure for the VO2. Lattice parameters of the I4(1)/amd VO2 are determined by geometry optimization. The energy band structure shows that the I4(1)/amd VO2 should be a metal. Furthermore, the upper valence band has dominant 2p-orbital characters, but the lower conduction band shows distinctive 3d-orbital characters. Obvious hybridization between the O-2p and V-3d orbitals is observed.
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页码:1055 / 1062
页数:8
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