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Project Summary: Magnetotransport, the response of charge transport to magnetic field, plays a key role in
spintronic applications. Magnetotransport is generally sensitive to magnetic field orientation, but the efficient and
isotropic modulation of electronic transport needed for certain technology applications is rarely seen. GdPS, a
layered antiferromagnetic semiconductor with resistivity anisotropy, is shown to support a field-driven insulator-tometal
transition with a large isotropic negative magnetoresistance. This isotropic magnetoresistance originates
from the near-zero spinâorbit coupling in half-filled Gd3+ and strong on-site fâd exchange. Not only does GdPS
provide a novel material system for spintronic devices based on antiferromagnetism, it also demonstrate key
ingredients for designing magnetic materials with desired transport properties.
Acharya et al., Adv. Mater. 2024, 36, 2410655,
10.1002/adma.202410655
2DCC Role: External user of 2DCC
Theory/Simulation/Data facility elucidated mechanisms of
magnetic coupling through first-principles computation.