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Title: Critical current density and vortex pinning in tetragonal FeS 1 x Se x ( x = 0 , 0.06 )

Abstract

Here we report critical current density (J c) in tetragonal FeS single crystals, similar to iron-based superconductors with much higher superconducting critical temperatures (T c). The J c 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 FeS 0.94Se 0.06 shows contribution of core-normal surfacelike pinning. Lastly, reduced temperature dependence of J c 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 K xFe 2₋ySe 2 where spatial variations in T c (δT c) prevails.

Authors:
 [1];  [1];  [2];  [3];  [4];  [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
  2. Univ. of Belgrade, Belgrade (Serbia). Institute of Nuclear Sciences Vinca
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Instrument Division
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Henan Univ., Kaifeng (China). School of Physics and Electronics
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1336175
Alternate Identifier(s):
OSTI ID: 1321040
Report Number(s):
BNL-113168-2016-JA
Journal ID: ISSN 2469-9950; PRBMDO; R&D Project: PM016; MA015MACA; KC0201050; KC0201010
Grant/Contract Number:  
SC0012704; AC02-98CH10886; DEAC02-98CH10886
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 94; Journal Issue: 9; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Wang, Aifeng, Wu, Lijun, Ivanovski, V. N., Warren, J. B., Tian, Jianjun, Zhu, Yimei, and Petrovic, C. Critical current density and vortex pinning in tetragonal FeS1₋xSex (x=0,0.06). United States: N. p., 2016. Web. doi:10.1103/PhysRevB.94.094506.
Wang, Aifeng, Wu, Lijun, Ivanovski, V. N., Warren, J. B., Tian, Jianjun, Zhu, Yimei, & Petrovic, C. Critical current density and vortex pinning in tetragonal FeS1₋xSex (x=0,0.06). United States. doi:10.1103/PhysRevB.94.094506.
Wang, Aifeng, Wu, Lijun, Ivanovski, V. N., Warren, J. B., Tian, Jianjun, Zhu, Yimei, and Petrovic, C. Wed . "Critical current density and vortex pinning in tetragonal FeS1₋xSex (x=0,0.06)". United States. doi:10.1103/PhysRevB.94.094506. https://www.osti.gov/servlets/purl/1336175.
@article{osti_1336175,
title = {Critical current density and vortex pinning in tetragonal FeS1₋xSex (x=0,0.06)},
author = {Wang, Aifeng and Wu, Lijun and Ivanovski, V. N. and Warren, J. B. and Tian, Jianjun and Zhu, Yimei and Petrovic, C.},
abstractNote = {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.},
doi = {10.1103/PhysRevB.94.094506},
journal = {Physical Review B},
issn = {2469-9950},
number = 9,
volume = 94,
place = {United States},
year = {2016},
month = {9}
}

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