This title appears in the Scientific Report :
2020
Magnetic and Anomalous Transport Properties of Hexagonal -Mn3+δGe
Magnetic and Anomalous Transport Properties of Hexagonal -Mn3+δGe
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 fro...
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Personal Name(s): | RAI, VENUS |
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Nandi, Shibabrata / JANA, SUBHADIP / PERßON, JÖRG / BRÜCKEL, THOMAS | |
Contributing Institute: |
Streumethoden; JCNS-2 JARA-FIT; JARA-FIT Streumethoden; PGI-4 |
Imprint: |
2020
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Conference: | DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM), Technischen Universität Dresden, Campus Südvorstadt (Germany), 2020-03-15 - 2020-03-20 |
Document Type: |
Poster |
Research Program: |
Jülich Centre for Neutron Research (JCNS) Materials and Processes for Energy and Transport Technologies Quantum Condensed Matter: Magnetism, Superconductivity Controlling Collective States Controlling Collective States |
Publikationsportal JuSER |
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. |