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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. doi:10.1016/j.ssc.2020.113846.

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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
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URLURL TypeDescription
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.
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
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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, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:101324
Deposited By: Tony Diaz
Deposited On:18 Feb 2020 20:02
Last Modified:16 Nov 2021 18:01

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