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When hydrogen (H) atoms are locally extracted by an STM tip from a Si(001)-(3 1)-H surface consisting of Si monohydride and dihydride rows, in addition to the creation of missing H atoms, the dihydride rows partly disappear and instead new monohydride rows appear (at 300 K). If H atoms are deposited from a H-covered STM tip onto the Si(001)-(2 1)-H surface consisting of Si monohydride rows,...
Atomic scale extraction of hydrogen atoms on Si(001)-(2 1)-H and -(3 1)-H surfaces between 300 and 610 K have been studied using a scanning tunneling microscope. Hydrogen atoms were extracted at positive and negative sample bias voltage. Site-selective desorption and reconstruction from the dihydride phase to the monohydride phase are found in the desorption of hydrogen atoms from Si(001)-(3...
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