Wang, Qisi
Shen, Yao
Pan, Bingying
Hao, Yiqing
Ma, Mingwei
Zhou, Fang
Steffens, P.
Schmalzl, K.
Forrest, T. R.
Abdel-Hafiez, M.
Chen, Xiaojia http://orcid.org/0000-0002-3979-8369
Chareev, D. A.
Vasiliev, A. N.
Bourges, P.
Sidis, Y.
Cao, Huibo
Zhao, Jun http://orcid.org/0000-0002-0421-8934
Article History
Received: 4 March 2015
Accepted: 26 October 2015
First Online: 7 December 2015
Change Date: 15 December 2015
Change Type: Correction
Change Details: In the original version of this Letter published online, the <i>x</i> axis of Fig. 2a was labelled incorrectly. In addition, tick labels have been added to the <i>x</i> axes of Fig. 2b and Fig. 2d. This has been corrected in all versions of the Letter.
Competing interests
: The authors declare no competing financial interests.