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000894200 037__ $$aFZJ-2021-03091
000894200 041__ $$aEnglish
000894200 1001_ $$0P:(DE-Juel1)178021$$aRai, V.$$b0$$eCorresponding author
000894200 1112_ $$a13th international Polarized Neutrons for Condensed-Matter Investigations$$conline event$$d2021-07-27 - 2021-07-30$$gPNCMI$$wonline event
000894200 245__ $$aPolarized neutron diffraction of Hexagonal-(Mn0.78Fe0.22)3Ge
000894200 260__ $$c2021
000894200 3367_ $$0PUB:(DE-HGF)1$$2PUB:(DE-HGF)$$aAbstract$$babstract$$mabstract$$s1627380252_2266
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000894200 520__ $$aTopological quantum materials have attracted enormous attention since their discovery due to the observed anomalous transport effects (ATE), which originate from the non-zero Berry curvature. Mn3Ge has gained special attention because anomalous transport effects can be studied below the Néel temperature (365 K), down to 2 K [1]. Since ATE emerge from the robust topological band structure, it is interesting to study the effects of Fe doping on ATE in (Mn1-xFex)3Ge. Our transport measurements show the existence of an anomalous Hall effect (AHE) in the intermediate temperature range for the 22% Fe doped sample. However, the origin of the AHE cannot be attributed to Weyl points without knowledge of the ground state magnetic structure of doped samples. Therefore, we have performed polarized neutron diffraction from the (Mn0.78Fe0.22)3Ge sample using the D3 CRYOPAD setup at ILL, France. Our analysis concludes that the magnetic structure of the 22% Fe doped sample remains the same as Mn3Ge in the temperature range where AHE is observed. This suggests that the physics behind AHE observed in doped samples is most likely the same as in Mn3Ge. Therefore, it can be argued that the Weyl Fermions do not vanish by suitable doping of the sample, as long as the magnetic structure of the doped samples remains the same.
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000894200 7001_ $$0P:(DE-Juel1)178022$$aJana, S.$$b1
000894200 7001_ $$0P:(DE-Juel1)177779$$aNandi, Shibabrata$$b2$$ufzj
000894200 7001_ $$0P:(DE-HGF)0$$aStunault, A.$$b3
000894200 7001_ $$0P:(DE-Juel1)130884$$aPerßon, J.$$b4
000894200 7001_ $$0P:(DE-Juel1)130572$$aBrückel, T.$$b5
000894200 8564_ $$uhttps://juser.fz-juelich.de/record/894200/files/Program%20Booklet%20PNCMI%202021_Rai.pdf$$yRestricted
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000894200 9141_ $$y2021
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