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Coexistence of the Kondo effect and spin glass physics in Fe-doped NbS2

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Title: Coexistence of the Kondo effect and spin glass physics in Fe-doped NbS2
Authors: Nobukane, H. Browse this author
Tabata, Y. Browse this author
Kurosawa, T. Browse this author
Sakabe, D. Browse this author
Tanda, S. Browse this author
Keywords: Kondo effect
spin glass
transition metal dichalcogenides
Issue Date: 17-Apr-2020
Publisher: IOP Publishing
Journal Title: Journal of physics : condensed matter
Volume: 32
Issue: 16
Start Page: 165803
Publisher DOI: 10.1088/1361-648X/ab622a
Abstract: We report the coexistence of the Kondo effect and spin glass behavior in Fe-doped NbS2 single crystals. The FexNbS2 shows the resistance minimum and negative magnetoresistance due to the Kondo effect, and exhibits no superconducting behavior at low temperatures. The resistance curve follows a numerical renormalization-group theory using the Kondo temperature K for x = 0.01 as evidence of Kondo effect. Scanning tunneling microscope/spectroscopy (STM/STS) revealed the presence of Fe atoms near sulfur atoms and asymmetric spectra. The magnetic susceptibility exhibits a feature of spin glass. The static critical exponents determined by the universal scaling of the nonlinear part of the susceptibility suggest a three-dimensional Heisenberg spin glass. The doped-Fe atoms in the intra- and inter-layers revealed by the x-ray result can realize the coexistence of the Kondo effect and spin glass.
Rights: This is the Accepted Manuscript version of an article accepted for publication in Journal of Physics : Condensed Matter. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at
Type: article (author version)
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 延兼 啓純

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