Spin-mediated hysteretic switching of unidirectional charge density waves by rotating magnetic fields

-symmetric phase diagram with pronounced hysteresis. This hysteretic switching is mediated by a field-dependent reorientation of underlying antiferromagnetic spins, revealing a tunable energy landscape with stable and metastable states and modulates the electronic charge order via spin-lattice coupling. Our findings not only demonstrate the switching of charge density wave configurations by in-plane magnetic field but also reveal the mechanism of coupling between charge density wave and magnetic fields, offering new insights into charge density wave manipulation and versatile platform for developing a spin-mediated multistate spin-charge coupling memory and programmable quantum devices.