Evidence for an<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>s</mml:mi></mml:math>-wave superconducting gap in K<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow/><mml:mi>x</mml:mi></mml:msub></mml:math>Fe<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow/><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>y</mml:mi></mml:mrow></mml:msub></mml:math>Se<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow/><mml:mn>2</mml:mn></mml:msub></mml:math>from angle-resolved photoemission
Min Xu(Chinese Academy of Sciences), Donglai Feng(Hefei National Center for Physical Sciences at Nanoscale), Rui Peng(Fudan University), A. F. Wang(Soochow University), X. H. Chen(Hangzhou Dianzi University), F. Chen(Fudan University), Yiting Zhang(Fudan University), Xiangfeng Wang(University of Science and Technology of China), B. P. Xie(Guilin University of Technology), Z. R. Ye(Fudan University), Juan Jiang(Fudan University), Q. Q. Ge(Fudan University), Xiaoping Shen(Jiangsu University)
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