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Title: Superconductivity and charge density wave in ZrTe3–xSex

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep26974· OSTI ID:1324285
 [1];  [2];  [3];  [2];  [2];  [2];  [4];  [5];  [6];  [7];  [2];  [6];  [6];  [3];  [6]
  1. Chinese Academy of Sciences and Univ. of Science and Technology of China, Hefei (China); Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Chinese Academy of Sciences and Univ. of Science and Technology of China, Hefei (China)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States); Univ. of Maryland, College Park, MD (United States)
  5. Chinese Academy of Sciences and Univ. of Science and Technology of China, Hefei (China); Condensed Matter Physics and Materials Science Dept., Upton, NY (United States)
  6. Chinese Academy of Sciences and Univ. of Science and Technology of China, Hefei (China); Collaborative Innovation Center of Advanced Microstructures, Nanjing (China)
  7. Brookhaven National Lab. (BNL), Upton, NY (United States); Tianjin Univ. of Technology, Tianjin (China)

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. As a result, 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.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704
OSTI ID:
1324285
Report Number(s):
BNL-112533-2016-JA; R&D Project: PM016; MA015MACA; KC0201050; KC0201010
Journal Information:
Scientific Reports, Vol. 6; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 38 works
Citation information provided by
Web of Science

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Cited By (5)

Charge density wave quantum critical point with strong enhancement of superconductivity journal July 2017
Unique features of the generation–recombination noise in quasi-one-dimensional van der Waals nanoribbons journal January 2018
Fast and controlled growth of two-dimensional layered ZrTe 3 nanoribbons by chemical vapor deposition journal January 2019
Collective excitations in 2D atomic layers: Recent perspectives journal January 2020
Pressure-induced enhancement in the superconductivity of ZrTe 3 journal August 2018