skip to main content

DOE PAGESDOE PAGES

Title: Multiband nodeless superconductivity near the charge-density-wave quantum critical point in ZrTe 3–xSe x

It was found that selenium doping can suppress the charge-density-wave (CDW) order and induce bulk superconductivity in ZrTe 3. The observed superconducting dome suggests the existence of a CDW quantum critical point (QCP) in ZrTe 3–x Se x near x ≈ 0.04. To elucidate the superconducting state near the CDW QCP, we measure the thermal conductivity of two ZrTe 3–x Se x single crystals (x = 0.044 and 0.051) down to 80 mK. For both samples, the residual linear term κ 0/T at zero field is negligible, which is a clear evidence for nodeless superconducting gap. Furthermore, the field dependence of κ 0/T manifests a multigap behavior. Lastly, these results demonstrate multiple nodeless superconducting gaps in ZrTe 3–x Se x, which indicates conventional superconductivity despite of the existence of a CDW QCP.
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [4]
  1. Fudan Univ., Shanghai (China)
  2. Chinese Academy of Sciences and Univ. of Science and Technology of China, Hefei (China); Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. Fudan Univ., Shanghai (China); Collaborative Innovation Center of Advanced Microstructures, Nanjing (China)
Publication Date:
Report Number(s):
BNL-113579-2017-JA
Journal ID: ISSN 1674-1056; R&D Project: PM016; KC0201050
Grant/Contract Number:
SC00112704
Type:
Accepted Manuscript
Journal Name:
Chinese Physics. B
Additional Journal Information:
Journal Volume: 25; Journal Issue: 7; Journal ID: ISSN 1674-1056
Publisher:
IOP Publishing
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; superconductivity; charge-density-wave order; thermal transport measurement; gap structure
OSTI Identifier:
1345739

Cui, Shan, He, Lan -Po, Hong, Xiao -Chen, Zhu, Xiang -De, Petrovic, Cedomir, and Li, Shi -Yan. Multiband nodeless superconductivity near the charge-density-wave quantum critical point in ZrTe3–xSex. United States: N. p., Web. doi:10.1088/1674-1056/25/7/077403.
Cui, Shan, He, Lan -Po, Hong, Xiao -Chen, Zhu, Xiang -De, Petrovic, Cedomir, & Li, Shi -Yan. Multiband nodeless superconductivity near the charge-density-wave quantum critical point in ZrTe3–xSex. United States. doi:10.1088/1674-1056/25/7/077403.
Cui, Shan, He, Lan -Po, Hong, Xiao -Chen, Zhu, Xiang -De, Petrovic, Cedomir, and Li, Shi -Yan. 2016. "Multiband nodeless superconductivity near the charge-density-wave quantum critical point in ZrTe3–xSex". United States. doi:10.1088/1674-1056/25/7/077403. https://www.osti.gov/servlets/purl/1345739.
@article{osti_1345739,
title = {Multiband nodeless superconductivity near the charge-density-wave quantum critical point in ZrTe3–xSex},
author = {Cui, Shan and He, Lan -Po and Hong, Xiao -Chen and Zhu, Xiang -De and Petrovic, Cedomir and Li, Shi -Yan},
abstractNote = {It was found that selenium doping can suppress the charge-density-wave (CDW) order and induce bulk superconductivity in ZrTe3. The observed superconducting dome suggests the existence of a CDW quantum critical point (QCP) in ZrTe3–x Sex near x ≈ 0.04. To elucidate the superconducting state near the CDW QCP, we measure the thermal conductivity of two ZrTe3–x Sex single crystals (x = 0.044 and 0.051) down to 80 mK. For both samples, the residual linear term κ0/T at zero field is negligible, which is a clear evidence for nodeless superconducting gap. Furthermore, the field dependence of κ0/T manifests a multigap behavior. Lastly, these results demonstrate multiple nodeless superconducting gaps in ZrTe3–x Sex, which indicates conventional superconductivity despite of the existence of a CDW QCP.},
doi = {10.1088/1674-1056/25/7/077403},
journal = {Chinese Physics. B},
number = 7,
volume = 25,
place = {United States},
year = {2016},
month = {6}
}