title: Unabridged phase diagram for single-phased FeSe(x)Te(1-x) thin films.
abstract: A complete phase diagram and its corresponding physical properties are essential prerequisites to understand the underlying mechanism of iron-based superconductivity. For the structurally simplest 11 (FeSeTe) system, earlier attempts using bulk samples have not been able to do so due to the fabrication difficulties. Here, thin FeSe(x)Te(1-x) films with the Se content covering the full range (0 ≤ x ≤ 1) were fabricated by using pulsed laser deposition method. Crystal structure analysis shows that all films retain the tetragonal structure in room temperature. Significantly, the highest superconducting transition temperature (T(C) = 20 K) occurs in the newly discovered domain, i.e., 0.6 ≤ x ≤ 0.8. The single-phased superconducting dome for the full Se doping range is the first of its kind in iron chalcogenide superconductors. Our results present a new avenue to explore novel physics as well as to optimize superconductors.
authors.affiliation: 1] Department of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, People's Republic of China [2] Institute for Superconducting and Electronic Materials, University of Wollongong, North Wollongong, New South Wales 2500, Australia.
authors.forename: Jincheng
authors.initials: J
authors.lastname: Zhuang
authors.affiliation: 1] Institute for Superconducting and Electronic Materials, University of Wollongong, North Wollongong, New South Wales 2500, Australia [2] Australian Centre for Microscopy and Microanalysis, University of Sydney, Sydney, New South Wales 2006, Australia [3] School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, New South Wales 2006, Australia.
authors.forename: Wai Kong
authors.initials: WK
authors.lastname: Yeoh
authors.affiliation: 1] Australian Centre for Microscopy and Microanalysis, University of Sydney, Sydney, New South Wales 2006, Australia [2] School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, New South Wales 2006, Australia.
authors.forename: Xiangyuan
authors.initials: X
authors.lastname: Cui
authors.affiliation: Institute for Superconducting and Electronic Materials, University of Wollongong, North Wollongong, New South Wales 2500, Australia.
authors.forename: Xun
authors.initials: X
authors.lastname: Xu
authors.affiliation: Institute for Superconducting and Electronic Materials, University of Wollongong, North Wollongong, New South Wales 2500, Australia.
authors.forename: Yi
authors.initials: Y
authors.lastname: Du
authors.affiliation: Department of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, People's Republic of China.
authors.forename: Zhixiang
authors.initials: Z
authors.lastname: Shi
authors.affiliation: 1] Australian Centre for Microscopy and Microanalysis, University of Sydney, Sydney, New South Wales 2006, Australia [2] School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, New South Wales 2006, Australia.
authors.forename: Simon P
authors.initials: SP
authors.lastname: Ringer
authors.affiliation: Institute for Superconducting and Electronic Materials, University of Wollongong, North Wollongong, New South Wales 2500, Australia.
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Wang
authors.affiliation: Institute for Superconducting and Electronic Materials, University of Wollongong, North Wollongong, New South Wales 2500, Australia.
authors.forename: Shi Xue
authors.initials: SX
authors.lastname: Dou