TY  - JOUR
EP  - 6842
VL  - 9
AV  - public
Y1  - 2015/07/09/
SP  - 6837
TI  - Tunneling Desorption of Single Hydrogen on the Surface of Titanium Dioxide
N1  - This document is the Accepted Manuscript version of a ACS Nano, copyright © 2015 American Chemical Society after peer review and technical editing by the publisher.
To access the final edited and published work see
http://dx.doi.org/10.1021/acsnano.5b01607
IS  - 7
UR  - http://dx.doi.org/10.1021/acsnano.5b01607
ID  - discovery1469911
N2  - We investigated the reaction mechanism of the desorption of single hydrogen from a titanium dioxide surface excited by the tip of a scanning tunneling microscope (STM). Analysis of the desorption yield, in combination with theoretical calculations, indicates the crucial role played by the applied electric field. Instead of facilitating desorption by reducing the barrier height, the applied electric field causes a reduction in the barrier width, which, when coupled with the electron excitation induced by the STM tip, leads to the tunneling desorption of the hydrogen. A significant reduction in the desorption yield was observed when deuterium was used instead of hydrogen, providing further support for the tunneling-desorption mechanism.
KW  - defect
KW  -  manipulation
KW  -  scanning tunneling microscopy
KW  -  titanium dioxide
A1  - Minato, T
A1  - Kajita, S
A1  - Pang, CL
A1  - Asao, N
A1  - Yamamoto, Y
A1  - Nakayama, T
A1  - Kawai, M
A1  - Kim, Y
JF  - ACS Nano
ER  -