Correlations of crystallographic defects and anisotropy with magnetotransport properties in FexTaS2 single crystals ( 0.23≤x≤0.35 )

Chen, Chih-Wei; Chikara, Shalinee; Zapf, Vivien S.; Morosan, E.

doi:10.1103/PhysRevB.94.054406

Correlations of crystallographic defects and anisotropy with magnetotransport properties in ${Fe}_{x} {TaS}_{2}$ single crystals ( $0.23 \leq x \leq 0.35$ )

Journal Article · Tue Aug 02 00:00:00 EDT 2016 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.94.054406· OSTI ID:1414097

Chen, Chih-Wei ^[1]; Chikara, Shalinee ^[2]; Zapf, Vivien S. ^[2]; Morosan, E. ^[1]

Rice Univ., Houston, TX (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Very large magnetoresistance discovered in single crystals of the ferromagnetic Fe-intercalated transition metal dichalcogenide, Fe_0.28TaS₂ was attributed to the deviation of the Fe concentration from commensurate values (x = 1/4 or 1/3), which caused magnetic moment misalignments. Here we report a study of Fe_xTaS₂ crystals with 0:23 ≤ x ≤ 0:35, demonstrating that crystallographic defects lead to spin disorder, which correlates with magneto-transport properties such as switching magnetic fi eld HS, magnetoresistance MR, and even zero-field resistivity ρ0 and temperature coefficient A in ρ(T) = ρ₀ + AT₂: The ordering temperature T_C and Weiss temperature θ_W are maximized at the superstructure composition x = 1/4, while H_s, MR, ρ₀, and A are minimum. Conversely, at a composition intermediate between the superstructure compositions x = 1/4 and 1/3, the corresponding magneto-transport properties reach local maxima.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: National Science Foundation; USDOE

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1414097

Alternate ID(s):: OSTI ID: 1280211

Report Number(s):: LA--UR-16-27437

Journal Information:: Physical Review B, Journal Name: Physical Review B Journal Issue: 5 Vol. 94; ISSN 2469-9950; ISSN PRBMDO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited By (2)

Anomalous Hall effect mechanisms in the quasi-two-dimensional van der Waals ferromagnet F e 0.29 Ta S 2 Cai, Ranran; Xing, Wenyu; Zhou, Huibin Physical Review B, Vol. 100, Issue 5 https://doi.org/10.1103/physrevb.100.054430	journal	August 2019
Critical behavior of intercalated quasi-van der Waals ferromagnet F e 0.26 Ta S 2 Zhang, Chenhui; Yuan, Ye; Wang, Mao Physical Review Materials, Vol. 3, Issue 11 https://doi.org/10.1103/physrevmaterials.3.114403	journal	November 2019

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