title: Superconductivity and Charge Density Wave in ZrTe3-xSex.
abstract: Charge density wave (CDW), the periodic modulation of the electronic charge density, will open a gap on the Fermi surface that commonly leads to decreased or vanishing conductivity. On the other hand superconductivity, a commonly believed competing order, features a Fermi surface gap that results in infinite conductivity. Here we report that superconductivity emerges upon Se doping in CDW conductor ZrTe3 when the long range CDW order is gradually suppressed. Superconducting critical temperature Tc(x) in ZrTe3-xSex (0 ≤ x ≤ 0.1) increases up to 4 K plateau for 0.04 ≤ x ≤ 0.07. Further increase in Se content results in diminishing Tc and filametary superconductivity. The CDW modes from Raman spectra are observed in x = 0.04 and 0.1 crystals, where signature of ZrTe3 CDW order in resistivity vanishes. The electronic-scattering for high Tc crystals is dominated by local CDW fluctuations at high temperatures, the resistivity is linear up to highest measured T = 300 K and contributes to substantial in-plane anisotropy.
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230031, China.|Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
authors.forename: Xiangde
authors.initials: X
authors.lastname: Zhu
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230031, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Ning
authors.affiliation: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
authors.forename: Lijun
authors.initials: L
authors.lastname: Li
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230031, China.
authors.forename: Langsheng
authors.initials: L
authors.lastname: Ling
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230031, China.
authors.forename: Ranran
authors.initials: R
authors.lastname: Zhang
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230031, China.
authors.forename: Jinglei
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
authors.forename: Kefeng
authors.initials: K
authors.lastname: Wang
authors.affiliation: Key Laboratory of Materials Physics, Institute of Solid State Physics Chinese Academy of Sciences, Hefei 230031, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Liu
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230031, China.|Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China.
authors.forename: Li
authors.initials: L
authors.lastname: Pi
authors.affiliation: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA.|School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China.
authors.forename: Yongchang
authors.initials: Y
authors.lastname: Ma
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230031, China.
authors.forename: Haifeng
authors.initials: H
authors.lastname: Du
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230031, China.|Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China.
authors.forename: Minglian
authors.initials: M
authors.lastname: Tian
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230031, China.|Key Laboratory of Materials Physics, Institute of Solid State Physics Chinese Academy of Sciences, Hefei 230031, China.|Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China.
authors.forename: Yuping
authors.initials: Y
authors.lastname: Sun
authors.affiliation: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
authors.forename: Cedomir
authors.initials: C
authors.lastname: Petrovic
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230031, China.|Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China.
authors.forename: Yuheng
authors.initials: Y
authors.lastname: Zhang