Kyung, W. S.
Huh, S. S.
Koh, Y. Y.
Choi, K.-Y.
Nakajima, M.
Eisaki, H.
Denlinger, J. D.
Mo, S.-K. http://orcid.org/0000-0003-0711-8514
Kim, C.
Kim, Y. K.
Article History
Received: 21 October 2015
Accepted: 14 July 2016
First Online: 15 August 2016
Change Date: 29 September 2016
Change Type: Correction
Change Details: In the original version of this Letter, the <i>x</i>-axes in Fig. 2a-d were mislabelled; they should have read '<i>E</i> – <i>E</i><sub>F</sub> (meV)'. This has been corrected in all versions.
Competing interests
: The authors declare no competing financial interests.