  The discovery of fascinating ways to control and manipulate antiferromagnetic
materials have garnered considerable attention as an attractive platform to
explore novel spintronic phenomena and functionalities. Layered
antiferromagnets (AFMs) exhibiting interesting magnetic structures, can serve
as an attractive starting point to establish novel functionalities down to the
two-dimensional limit. In this work, we explore the magnetoresistive properties
of the spin-ladder AFM TaFe$_{1.25}$Te$_3$. Magnetization studies reveal an
anisotropic magnetic behavior resulting in the stabilization of a spin-flop
configuration for H $\perp$ (10-1) plane (i.e., out-of-plane direction).
Angle-dependent longitudinal and transverse magnetoresistances show an unusual
anharmonic behavior. A significant anisotropic enhancement of magnetoresistance
when H $\perp$ (10-1) plane compared to H $\parallel$ (10-1) directions has
been observed. The present results deepen our understanding of the
magnetoresistive properties of low-dimensional layered AFMs, and point towards
the possibility of utilizing these novel material systems for antiferromagnetic
spintronics.
