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arXiv · 1212.0175

Manipulating the magnetic anisotropy of cobalt doped titanium dioxide by carrier accumulation

Bin Shao·Min Feng·Hong Liu·Jian Wu·Xu Zuo
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Abstract

Based on first-principles calculations, we predict that the magnetic anisotropy energy (MAE) of Co-doped TiO$_2$ sensitively depends on carrier accumulation. This magnetoelectric phenomenon provides a promising route to directly manipulate the magnetization direction of diluted magnetic semiconductor by external electric-fields. We calculate the band structures and reveal the origin of carrier-dependent MAE in k-space. In fact, the carrier accumulation shifts the Fermi energy and regulates the competing contributions to MAE. The first-principles calculations provide a straightforward way to design spintronics materials with electrically controllable spin direction.

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Bin Shao, Min Feng, Hong Liu, Jian Wu, Xu Zuo. 2013-01-18. Manipulating the magnetic anisotropy of cobalt doped titanium dioxide by carrier accumulation. https://arxiv.org/abs/1212.0175

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