@article{83f9ca2277804cabbbc2f08a060d0efa,
title = "Internal pressure in superconducting Cu-intercalated Bi2Se3",
abstract = "Angle-resolved photoemission spectroscopy is used to study the band structure of superconducting electrochemically intercalated CuxBi2Se3. We find that in these samples, the band gap at the Γ point is much larger than in pristine Bi2Se3. Comparison to the results of band structure calculations indicates that the origin of this large gap is internal stress caused by disorder created by the Cu intercalation. We suggest that the internal pressure may be necessary for superconductivity in CuxBi2Se3.",
author = "Amit Ribak and Chashka, {Khanan B.} and Elias Lahoud and Muntaser Naamneh and Shahar Rinott and Yair Ein-Eli and Plumb, {Nicholas C.} and Ming Shi and Emile Rienks and Amit Kanigel",
note = "Funding Information: We acknowledge the Paul Scherrer Institut, Villigen, Switzerland for provision of synchrotron radiation beam time at beam line HRPES-SIS of the SLS. We thank Helmholtz-Zentrum Berlin for the allocation of synchrotron radiation beam time. The Synchrotron Radiation Center is supported by NSF Grant No. DMR 0084402. This research was supported by the Israel Science Foundation (Grant No. 885/13) and the Swiss National Science Foundation (Grant No. 200021-137783). The research leading to these results has received funding from the European Community''s Seventh Framework Programme (FP7/2007-2013) under Grant Agreement No. 312284. We thank Ilia Khait for helping with the computational work. Publisher Copyright: {\textcopyright} 2016 American Physical Society.",
year = "2016",
month = feb,
day = "5",
doi = "10.1103/PhysRevB.93.064505",
language = "English",
volume = "93",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "6",
}