Multiband nodeless superconductivity near the charge-density-wave quantum critical point in ZrTe3–xSex
Abstract
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.
- Authors:
-
- Fudan Univ., Shanghai (China)
- Chinese Academy of Sciences and Univ. of Science and Technology of China, Hefei (China); Brookhaven National Lab. (BNL), Upton, NY (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Fudan Univ., Shanghai (China); Collaborative Innovation Center of Advanced Microstructures, Nanjing (China)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1345739
- Report Number(s):
- BNL-113579-2017-JA
Journal ID: ISSN 1674-1056; R&D Project: PM016; KC0201050
- Grant/Contract Number:
- SC00112704
- Resource 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
- 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
Citation Formats
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., 2016.
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. https://doi.org/10.1088/1674-1056/25/7/077403
Cui, Shan, He, Lan -Po, Hong, Xiao -Chen, Zhu, Xiang -De, Petrovic, Cedomir, and Li, Shi -Yan. Thu .
"Multiband nodeless superconductivity near the charge-density-wave quantum critical point in ZrTe3–xSex". United States. https://doi.org/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}
}
Web of Science