Effects of Iron Contents on the Vortex State in Fe{sub x}Se{sub 0.5}Te{sub 0.5}
Abstract
We investigate the effects of iron content on the upper critical field (H{sub c2}) and the activation energy U(T) in thermally activated flux flow in Fe{sub x}Se{sub 0.5}Te{sub 0.5} near the superconducting transition temperature T{sub c}. The variations in H{sub c2}(T) with temperature are analyzed using Ginzburg-Landau (GL), Werthamer-Helfand-Hohenberg (WHH) models along with the empirical relation (ER). The obtained values of H{sub c2}(0) depend strongly on the model and the criteria used to determine the transition temperature. However, the general trend is that that H{sub c2}(0) increases with the increasing Fe content. The activation energy U(T) is maximum for x = 1 and rapidly suppressed by excess or deficiency of iron. The low values of U(T) (∼10 meV) reflect the low vortex-pinning nature (due to defects, vacancies, etc.) in the Fe{sub x}Se{sub 0.5}Te{sub 0.5} superconductor.
- Authors:
-
- King Fahd University of Petroleum and Minerals, College of Science (Saudi Arabia)
- Imam Abdulrahman Bin Faisal University, Department of Basic Sciences and Humanities, College of Engineering (Saudi Arabia)
- Publication Date:
- OSTI Identifier:
- 22771182
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Superconductivity and Novel Magnetism
- Additional Journal Information:
- Journal Volume: 31; Journal Issue: 6; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; Article Copyright (c) 2017 Springer Science+Business Media, LLC; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1557-1939
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ACTIVATION ENERGY; CRITICAL FIELD; GINZBURG-LANDAU THEORY; IRON; MAGNETIC FLUX; MEV RANGE; SUPERCONDUCTORS; TRANSITION TEMPERATURE; VACANCIES
Citation Formats
Hamad, R. M., Kayed, T. S., Kunwar, S., Elsayed, K. A., Abu-Ruz, E., and Ziq, Kh. A., E-mail: kaziq@kfupm.edu.sa. Effects of Iron Contents on the Vortex State in Fe{sub x}Se{sub 0.5}Te{sub 0.5}. United States: N. p., 2018.
Web. doi:10.1007/S10948-017-4391-Z.
Hamad, R. M., Kayed, T. S., Kunwar, S., Elsayed, K. A., Abu-Ruz, E., & Ziq, Kh. A., E-mail: kaziq@kfupm.edu.sa. Effects of Iron Contents on the Vortex State in Fe{sub x}Se{sub 0.5}Te{sub 0.5}. United States. https://doi.org/10.1007/S10948-017-4391-Z
Hamad, R. M., Kayed, T. S., Kunwar, S., Elsayed, K. A., Abu-Ruz, E., and Ziq, Kh. A., E-mail: kaziq@kfupm.edu.sa. 2018.
"Effects of Iron Contents on the Vortex State in Fe{sub x}Se{sub 0.5}Te{sub 0.5}". United States. https://doi.org/10.1007/S10948-017-4391-Z.
@article{osti_22771182,
title = {Effects of Iron Contents on the Vortex State in Fe{sub x}Se{sub 0.5}Te{sub 0.5}},
author = {Hamad, R. M. and Kayed, T. S. and Kunwar, S. and Elsayed, K. A. and Abu-Ruz, E. and Ziq, Kh. A., E-mail: kaziq@kfupm.edu.sa},
abstractNote = {We investigate the effects of iron content on the upper critical field (H{sub c2}) and the activation energy U(T) in thermally activated flux flow in Fe{sub x}Se{sub 0.5}Te{sub 0.5} near the superconducting transition temperature T{sub c}. The variations in H{sub c2}(T) with temperature are analyzed using Ginzburg-Landau (GL), Werthamer-Helfand-Hohenberg (WHH) models along with the empirical relation (ER). The obtained values of H{sub c2}(0) depend strongly on the model and the criteria used to determine the transition temperature. However, the general trend is that that H{sub c2}(0) increases with the increasing Fe content. The activation energy U(T) is maximum for x = 1 and rapidly suppressed by excess or deficiency of iron. The low values of U(T) (∼10 meV) reflect the low vortex-pinning nature (due to defects, vacancies, etc.) in the Fe{sub x}Se{sub 0.5}Te{sub 0.5} superconductor.},
doi = {10.1007/S10948-017-4391-Z},
url = {https://www.osti.gov/biblio/22771182},
journal = {Journal of Superconductivity and Novel Magnetism},
issn = {1557-1939},
number = 6,
volume = 31,
place = {United States},
year = {Fri Jun 15 00:00:00 EDT 2018},
month = {Fri Jun 15 00:00:00 EDT 2018}
}