3 research outputs found
Investigation of the Anomalous and Topological Hall Effects in Layered Monoclinic Ferromagnet CrTe
We studied the electrical transport, Hall effect, and magnetic properties of
monoclinic layered ferromagnet CrTe. Our studies demonstrate
CrTe to be a soft ferromagnet with strong magnetocrystalline
anisotropy. Below 50 K, the system shows an antiferromagnetic-like transition.
Interestingly, between 50 and 150 K, we observe fluctuating magnetic moments
between in-plane and out-of-plane orientations, leading to non-coplanar spin
structure. On the other hand, the electrical resistivity data suggest it to be
metallic throughout the measured temperature range, except a at around
50 K due to AFM ordering. The Rhodes-Wohlfarth ratio
calculated from our magnetic studies
confirms that CrTe is an itinerant ferromagnet. Large anomalous
Hall effect has been observed due to the skew-scattering of impurities and the
topological Hall effect has been observed due to non-coplanar spin-structure in
the presence of strong magnetocrystalline anisotropy. We examined the mechanism
of anomalous Hall effect by employing the first principles calculations.Comment: 9 pages, 6 figures, To appear in Physical Review Material
Weak Electronic Correlations Observed in Magnetic Weyl Semimetal MnGe
Using angle-resolved photoemission spectroscopy (ARPES) and density
functional theory (DFT) calculations, we systematically studied the electronic
band structure of MnGe in the vicinity of the Fermi level. We observe
several bands crossing the Fermi level, confirming the metallic nature of the
studied system. We further observe several flat bands along various high
symmetry directions, consistent with the DFT calculations. The calculated
partial density of states (PDOS) suggests a dominant Mn orbital
contribution to the total valence band DOS. With the help of orbital-resolved
band structure calculations, we qualitatively identify the orbital information
of the experimentally obtained band dispersions. Out-of-plane electronic band
dispersions are explored by measuring the ARPES data at various photon
energies. Importantly, our study suggests relatively weaker electronic
correlations in MnGe compared to MnSn.Comment: 11 pages, 3 figures. To appear in the Journal of Physics: Condensed
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