全文请访问：http://www.spm.com.cn/papers/p33.pdf
We present a direct observation of a structural transition at molecular scale in an organic p-nitrobenzonitrile PNBN thin film using scanning tunne领 microscopy. STM images clearly show an ordered molecular structure of unrecorded regions in the films, while the PNBN molecular arrangements are disordered in the recorded regions. The currentvoltage (I V) measurements from the STM demonstrate a great increase of the conductance transition in the recorded regions after the voltage pulses. Those results suggest that the recording mechanism may be due to a crystalline structural transition, which is consistent with our previously proposed mechanism in another organic system for ultrahigh density data storage.
全文请访问：http://www.spm.com.cn/papers/p33.pdf 扫描探针显微镜(SPM/AFM/STM)
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