Abstract
Oxygen vacancy in SrTiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> is studied using the first principles calculation with the correction of onsite Coulomb interaction. In this paper, we performed the calculations on the multi oxygen vacancies in typical perovskite SrTiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> . We found that the oxygen vacancies tend to cluster in a linear way which makes the reduction of electron carrier concentration.
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