The photoemission study of Sr-intercalated C60

Peng Wang; Ateeq Rehman; Liang Meng; Wen-Jie Li; Hong-Nian Li; Wen-Hua Zhang; Jun-Fa Zhu

Results in Physics (Jan 2017)

The photoemission study of Sr-intercalated C60

Peng Wang,
Ateeq Rehman,
Liang Meng,
Wen-Jie Li,
Hong-Nian Li,
Wen-Hua Zhang,
Jun-Fa Zhu

Affiliations

Peng Wang: College of Electronic, Communication and Physics, Shandong University of Science and Technology, Qingdao 266590, China; Department of Physics, Zhejiang University, Hangzhou 310027, China; Corresponding author at: College of Electronic, Communication and Physics, Shandong University of Science and Technology, Qingdao 266590, China.
Ateeq Rehman: Department of Physics, Zhejiang University, Hangzhou 310027, China; Department of Physics, University of Agriculture, Faisalabad 38040, Pakistan
Liang Meng: Department of Physics, Zhejiang University, Hangzhou 310027, China
Wen-Jie Li: Department of Physics, Zhejiang University, Hangzhou 310027, China
Hong-Nian Li: Department of Physics, Zhejiang University, Hangzhou 310027, China
Wen-Hua Zhang: National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
Jun-Fa Zhu: National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China

Journal volume & issue: Vol. 7
pp. 3472 – 3474

Abstract

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Motivated by the renaissance of fullerene superconductivity, research on fullerides has once more become a hot topic in physics and material science. Here, we investigate the electronic properties of the phases that are formed upon metal Sr intercalated C60 film in ultra-high vacuum by synchrotron-radiation photoemission spectroscopy. In order to obtain the phase pure sample, special attentions were taken to the annealing procedure during the sample preparation. We find that the sample changes from semiconductor (C60) to weak metallicity (Sr2C60) at low intercalation levels, and then to semiconductor (Sr3C60) at intermediate intercalation levels. At last, the sample turns out to be metallicity (Sr6C60) at high intercalation levels. These observations along with the previously electrical resistivity and magnetic susceptibility measurements shed light on the electronic structure of Sr fullerides. Keywords: Sr fullerides, Electronic structure, Photoemission spectroscopy

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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