期刊
APPLIED PHYSICS LETTERS
卷 102, 期 19, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4805003
关键词
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资金
- National Key Basic Research [2011CBA00111]
- National Natural Science Foundation of China [U1232139]
- Chinese Academy of Sciences [U1232139]
Layered 1T-TaS2-xSex (0 <= x <= 2) single crystals have been systematically fabricated by a chemical vapor transport technique. Surprisingly, the superconductivity is induced by the Se doping. We demonstrate the appearance of a series of electronic states: the Mott phase melts into a nearly commensurate charge-density-wave (CDW) phase, superconductivity in a wide x range develops within the nearly commensurate CDW state, and finally commensurate CDW phase reproduces for heavy Se content. The rich phase diagram provides an ideal platform to investigate the interplay between electron correlation, CDW, and superconductivity, as well as the potential applications in electronic devices. (C) 2013 AIP Publishing LLC.
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