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Title: Vortex pinning and irreversibility fields in FeS 1– xSe x ( x = 0, 0.06)

In this paper, we report strong vortex pinning and large irreversibility fields in single crystals of tetragonal FeS 1–xSe x (x = 0, 0.06). Vortex dynamics is characterized by crossover in field dependence of the depinning energy U 0, indicative of single flux surface pinning to the region of collective flux pinning on point-like defects. Finally, the close proximity of the irreversibility lines to the upper critical field (H c2) is consistent with strong pinning in FeS and FeS 0.94Se 0.06, pointing that new materials with building-blocks of FeS 4 tetrahedra are likely to host high critical currents.
Authors:
ORCiD logo [1] ;  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Department
Publication Date:
Report Number(s):
BNL-114123-2017-JA
Journal ID: ISSN 0003-6951; R&D Project: PM016; KC0201050
Grant/Contract Number:
SC0012704
Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 110; Journal Issue: 23; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
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; 36 MATERIALS SCIENCE
OSTI Identifier:
1376163
Alternate Identifier(s):
OSTI ID: 1361926

Wang, Aifeng, and Petrovic, C. Vortex pinning and irreversibility fields in FeS1–xSex (x = 0, 0.06). United States: N. p., Web. doi:10.1063/1.4985292.
Wang, Aifeng, & Petrovic, C. Vortex pinning and irreversibility fields in FeS1–xSex (x = 0, 0.06). United States. doi:10.1063/1.4985292.
Wang, Aifeng, and Petrovic, C. 2017. "Vortex pinning and irreversibility fields in FeS1–xSex (x = 0, 0.06)". United States. doi:10.1063/1.4985292. https://www.osti.gov/servlets/purl/1376163.
@article{osti_1376163,
title = {Vortex pinning and irreversibility fields in FeS1–xSex (x = 0, 0.06)},
author = {Wang, Aifeng and Petrovic, C.},
abstractNote = {In this paper, we report strong vortex pinning and large irreversibility fields in single crystals of tetragonal FeS1–xSex (x = 0, 0.06). Vortex dynamics is characterized by crossover in field dependence of the depinning energy U0, indicative of single flux surface pinning to the region of collective flux pinning on point-like defects. Finally, the close proximity of the irreversibility lines to the upper critical field (Hc2) is consistent with strong pinning in FeS and FeS0.94Se0.06, pointing that new materials with building-blocks of FeS4 tetrahedra are likely to host high critical currents.},
doi = {10.1063/1.4985292},
journal = {Applied Physics Letters},
number = 23,
volume = 110,
place = {United States},
year = {2017},
month = {6}
}