%0 Conference Paper
%A RAI, VENUS
%A Nandi, Shibabrata
%A JANA, SUBHADIP
%A PERßON, JÖRG
%A BRÜCKEL, THOMAS
%T Magnetic and Anomalous Transport Properties of Hexagonal -Mn3+δGe
%M FZJ-2020-01040
%D 2020
%X Topological quantum materials have attracted enormous attention since their discovery due to the observed anomalous transport properties, which originate from the non-zero Berry curvature. Mn3+δGe has gained special attention because of its large anomalous transport effects that persist starting from Néel temperature (365 K) down to 2 K. Hexagonal - Mn3+δGe stabilizes in the range of δ = 0.25 to 0.55. We have observed larger anomalous Hall effect with very small hysteresis (<200 Oe) for high Mn concentration in Mn3+δGe. To establish the claim for the existence of Weyl points in Mn3+δGe, transverse and longitudinal magneto-resistance (MR) was also performed with field and current applied along several combinations of x, y, z crystallographic axes. Negative MR is observed in some cases even when magnetic field (B) is perpendicular to the current (I) direction. However, in case of I∥B∥x, negative MR is observed with different slopes below and above 2 T. Angle dependent measurement (between I and B) shows that the negative MR with higher slope (observed below 2 T) is possibly originating due to the chiral anomaly.
%B DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM)
%C 15 Mar 2020 - 20 Mar 2020, Technischen Universität Dresden, Campus Südvorstadt (Germany)
Y2 15 Mar 2020 - 20 Mar 2020
M2 Technischen Universität Dresden, Campus Südvorstadt, Germany
%F PUB:(DE-HGF)24
%9 Poster
%U https://juser.fz-juelich.de/record/873838