In this section
@article{Ahmed:2025:10.1002/adfm.202502940,
author = {Ahmed, A and Sharma, J and Bhattacharya, A and Biswas, A and Singha, T and Mudryk, Y and Alam, A and Das, I},
doi = {10.1002/adfm.202502940},
journal = {Advanced Functional Materials},
title = {Unconventional Anomalous Hall Effect in Hexagonal Polar Magnet Y3Co8Sn4},
url = {http://dx.doi.org/10.1002/adfm.202502940},
volume = {35},
year = {2025}
}
TY - JOUR
AB - A rare realization of unconventional anomalous Hall effect (UAHE) both below and above the magnetic transition temperature (T<inf>C</inf>) in a hexagonal noncentrosymmetric magnet Y<inf>3</inf>Co<inf>8</inf>Sn<inf>4</inf>, using a combined experimental and ab initio calculations. Occurrence of such UAHE is mainly attributed to the reciprocal ((Formula presented.)) topology (i.e., the presence of topological Weyl points at/near the Fermi level), along with some contribution from the topological magnetic texture (at low temperatures), as inferred from the measured field-dependent ac susceptibility. The effect of UAHE on the measured transport behavior however evolves differently with temperature above and below T<inf>C</inf> = 53 K, suggesting different physical mechanism responsible in the two phases. A unique planar ferrimagnetic ordering is found to be the most stable state with ab-plane as the easy plane below T<inf>C</inf>. The simulated net magnetization and the moment per Co atom agrees fairly well with the experimentally measured values. A reasonably large anomalous Hall conductivity (AHC) is also observed in both the phases (above and below T<inf>C</inf>) of the present compound, which is again not so ubiquitous. The results underscore the family of R<inf>3</inf>Co<inf>8</inf>Sn<inf>4</inf> (R = rare earth) polar magnets as a compelling backdrop for exploring the synergy of magnetism and topological non-trivial electronic states, pivotal for spintronic applications.
AU - Ahmed,A
AU - Sharma,J
AU - Bhattacharya,A
AU - Biswas,A
AU - Singha,T
AU - Mudryk,Y
AU - Alam,A
AU - Das,I
DO - 10.1002/adfm.202502940
PY - 2025///
SN - 1616-301X
TI - Unconventional Anomalous Hall Effect in Hexagonal Polar Magnet Y3Co8Sn4
T2 - Advanced Functional Materials
UR - http://dx.doi.org/10.1002/adfm.202502940
VL - 35
ER -