Mechanical writing of n-type conductive layers on the SrTiO3 surface in nanoscale.
Mechanical writing of n-type conductive layers on the SrTiO3 surface in nanoscale.
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DOI：
10.1038/srep10841
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发表时间：
2015-06-04
影响因子：
4.6
通讯作者：
Zhang L
中科院分区：
文献类型：
--
作者：
Wang Y;Zhao K;Shi X;Li G;Xie G;Lai X;Ni J;Zhang L
The fabrication and control of the conductive surface and interface on insulating SrTiO3 bulk provide a pathway for oxide electronics. The controllable manipulation of local doping concentration in semiconductors is an important step for nano-electronics. Here we show that conductive patterns can be written on bare SrTiO3 surface by controllable doping in nanoscale using the mechanical interactions of atomic force microscopy tip without applying external electric field. The conductivity of the layer is n-type, oxygen sensitive, and can be effectively tuned by the gate voltage. Hence, our findings have potential applications in oxide nano-circuits and oxygen sensors.
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