Critical current density and vortex pinning in tetragonal ( )
Journal Article
·
· Physical Review B
- Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
- Univ. of Belgrade, Belgrade (Serbia). Institute of Nuclear Sciences Vinca
- Brookhaven National Lab. (BNL), Upton, NY (United States). Instrument Division
- Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Henan Univ., Kaifeng (China). School of Physics and Electronics
Here we report critical current density (Jc) in tetragonal FeS single crystals, similar to iron-based superconductors with much higher superconducting critical temperatures (Tc). The Jc is enhanced three times by 6% Se doping. We observe scaling of the normalized vortex pinning force as a function of reduced field at all temperatures. Vortex pinning in FeS and FeS0.94Se0.06 shows contribution of core-normal surfacelike pinning. Lastly, reduced temperature dependence of Jc indicates that dominant interaction of vortex cores and pinning centers is via scattering of charge carriers with reduced mean free path (δl), in contrast to KxFe2₋ySe2 where spatial variations in Tc (δTc) prevails.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0012704; AC02-98CH10886; DEAC02-98CH10886
- OSTI ID:
- 1336175
- Alternate ID(s):
- OSTI ID: 1321040
- Report Number(s):
- BNL-113168-2016-JA; PRBMDO; R&D Project: PM016; MA015MACA; KC0201050; KC0201010
- Journal Information:
- Physical Review B, Vol. 94, Issue 9; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 4 works
Citation information provided by
Web of Science
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