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Reversibly Switching the Charge State and Adsorption Location of A Single Potassium Atom on Ultrathin CuO Films.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-06-02 , DOI: 10.1002/anie.202005370 Zhantao Peng 1 , Bin Di 1 , Wentao Li 1 , Dan Liu 1 , Xiaojie Wen 1 , Hao Zhu 1 , Huanjun Song 1 , Yajie Zhang 1 , Cen Yin 1 , Xiong Zhou 1 , Kai Wu 1
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-06-02 , DOI: 10.1002/anie.202005370 Zhantao Peng 1 , Bin Di 1 , Wentao Li 1 , Dan Liu 1 , Xiaojie Wen 1 , Hao Zhu 1 , Huanjun Song 1 , Yajie Zhang 1 , Cen Yin 1 , Xiong Zhou 1 , Kai Wu 1
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Potassium (K) cations are spontaneously formed upon thermal deposition of low‐coverage K onto an ultrathin CuO monolayer grown on Cu(110) and they were explored by low‐temperature scanning tunneling microscopy (STM) and X‐ray photoemission spectroscopy. The formed K cations are highly immobile and thermally stable. The local work function around an individual K cation decreases by 1.5±0.3 eV, and a charging zone underneath it is established within about 1.0 nm. The cationic and neutral states of the K atom are switchable upon application of an STM bias voltage pulse, which is simultaneously accompanied by an adsorption site relocation.
中文翻译：
可逆地切换超薄CuO薄膜上单个钾原子的电荷状态和吸附位置。
钾（K）阳离子是在低覆盖率的K上热沉积在Cu（110）上生长的超薄CuO单层上时自发形成的，并通过低温扫描隧道显微镜（STM）和X射线光电子能谱进行了探索。形成的K阳离子具有高度的固定性和热稳定性。单个K阳离子周围的局部功函数降低1.5±0.3 eV，并且其下方的电荷区建立在约1.0 nm之内。K原子的阳离子和中性态可在施加STM偏置电压脉冲后切换，同时伴随吸附位点重定位。
更新日期：2020-08-10
中文翻译：
可逆地切换超薄CuO薄膜上单个钾原子的电荷状态和吸附位置。
钾（K）阳离子是在低覆盖率的K上热沉积在Cu（110）上生长的超薄CuO单层上时自发形成的，并通过低温扫描隧道显微镜（STM）和X射线光电子能谱进行了探索。形成的K阳离子具有高度的固定性和热稳定性。单个K阳离子周围的局部功函数降低1.5±0.3 eV，并且其下方的电荷区建立在约1.0 nm之内。K原子的阳离子和中性态可在施加STM偏置电压脉冲后切换，同时伴随吸附位点重定位。
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