Ultraviolet-photon exposure stimulates negative current conductivity in amorphous ice below 50 K

Watanabe, N.; Sameera, W. M. C.; Hidaka, H.; Miyazaki, A.; Kouchi, A.

Ultraviolet-photon exposure stimulates negative current conductivity in amorphous ice below 50 K

Watanabe, N.; Sameera, W. M. C.; Hidaka, H. et al.

Chemical physics letters, 2019, 737, 136820

Permalink : https://hdl.handle.net/2115/83556

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アクセス権	open access
URI	https://hdl.handle.net/2115/83556
タイトル	Ultraviolet-photon exposure stimulates negative current conductivity in amorphous ice below 50 K
著者	Watanabe, N. ; Sameera, W. M. C. ; Hidaka, H. ; Miyazaki, A. ; Kouchi, A.
e-Rad_Researcher 50271531 著者名 Watanabe, N.
e-Rad_Researcher 90791278 著者名 Sameera, W. M. C.
著者名 Hidaka, H.
著者名 Miyazaki, A.
e-Rad_Researcher 60161866 著者名 Kouchi, A.
言語	英語
発行日	2019-12-16
出版者	Elsevier
収録物名	Chemical physics letters
巻(号)	737
ページ	136820
抄録	Water ice is known to carry positive charge via transfer of excess protons through a hydrogen-bonded system. In contrast, constant negative charge conductivity in ice has neither been confirmed experimentally nor theoretically. Here, we report that ultraviolet-photon irradiation stimulates negative current conductivity in amorphous ice at temperatures below 50 K, where hitherto known proton transfer from the surface through the bulk ice is inhibited. Quantum chemical calculations imply that the negative current conductivity results from almost barrier-less proton-hole transfer processes that neither requires intrinsic defects, doped species, nor reorientation of H2O molecules in ice.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	©2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN	0009-2614
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.cplett.2019.136820