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Effects of Cr doping on the superconductivity and magnetism of FeTe_(0.8)S_(0.2)

Li, Tao and Feng, Zhenjie and Hou, Qiang and Wu, Hao and Wang, Ke and Ge, Jun-Yi and Cao, Shixun and Zhang, Jincang and Yeh, Nai-Chang (2020) Effects of Cr doping on the superconductivity and magnetism of FeTe_(0.8)S_(0.2). Solid State Communications, 309 . Art. No. 113846. ISSN 0038-1098. https://resolver.caltech.edu/CaltechAUTHORS:20200218-111827578

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Abstract

We investigate the effects of Cr doping on the superconductivity and magnetism of layered compound FeTe_(0.8)S_(0.2), and find evidences for coexistence of ferromagnetism and superconductivity in the Cr-doped system. X-ray diffraction (XRD) spectra suggest that Cr dopants in Fe_(1-x)Cr_xTe_(0.8)S_(0.2) for x = 0.02, 0.04 and 0.06 primarily enter the sites in-between the FeTe_(1-y)S_y (0 < y ≤ 0.2) layers. Magnetic measurements reveal that the interlayer Cr dopants establish long-range ferromagnetic order with a doping dependent Curie temperature. On the other hand, the onset of superconductivity remains largely unaffected by the Cr-doping, although the superconducting transition width increases with increasing Cr doping while the superconducting diamagnetism decreases. Our observation suggests the compatibility of interlayer ferromagnetism with superconductivity in layered Fe_(1-x)Cr_xTe_(0.8)S_(0.2) compounds, similar to previous findings in other layer superconductors such as the cuprates and BiS₂-based compounds.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.ssc.2020.113846DOIArticle
ORCID:
AuthorORCID
Feng, Zhenjie0000-0003-3114-7390
Yeh, Nai-Chang0000-0002-1826-419X
Additional Information:© 2020 Elsevier Ltd. Received 29 October 2019, Revised 26 January 2020, Accepted 12 February 2020, Available online 17 February 2020.
Funders:
Funding AgencyGrant Number
Shanghai UniversityUNSPECIFIED
Ministry of Science and Technology (Taipei)2016YFB0700504
National Natural Science Foundation of China1733907
Science and Technology Commission of Shanghai Municipality13ZR1415200
Army Research Office (ARO)W911NF-16-1-0472
Shanghai Pujiang Program13PJD015
Record Number:CaltechAUTHORS:20200218-111827578
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200218-111827578
Official Citation:Tao Li, Zhenjie Feng, Qiang Hou, Hao Wu, Ke Wang, Jun-Yi Ge, Shixun Cao, Jincang Zhang, Nai-Chang Yeh, Effects of Cr doping on the superconductivity and magnetism of FeTe0.8S0.2, Solid State Communications, Volume 309, 2020, 113846, ISSN 0038-1098, https://doi.org/10.1016/j.ssc.2020.113846. (http://www.sciencedirect.com/science/article/pii/S0038109819309500)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:101324
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:18 Feb 2020 20:02
Last Modified:24 Feb 2020 15:38

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