Chiral Orbital Currents in Unconventional Ferrimagnetic Insulator Mn₃Si₂Te₆

Chiral oribital current (COC) underpin a novel colossal magnetoresistance (CMR) in ferrimagnetic insulator Mn3Si2Te6. This 7-order-of-magnitude CMR occurs only when a magnetic polarization is avoided, defying all existing models and precedents. application of small DC currents leads to exotic time-dependent, bistable switching, which takes seconds or even minutes to occur. Besides, A Hall effect in the COC state which exhibits the following unprecedented features including a sharp, current-sensitive peak in the magnetic field dependence of the Hall resistivity and a current-sensitive scaling relation between the Hall conductivity σ_xy and the longitudinal conductivity σ_xx, with is exceptionally scaling factor. Moreover, a new form of emergent inductance is discovered. When driven at low frequencies with fields along the hard c-axis, COC domains reconfigure collectively, producing millihenry-scale inductive responses. These mesoscopic domains act as coherent inductive elements that resist reversal, generating large electromotive forces and voltage spikes. Together, these phenomena establish Mn₃Si₂Te₆ as a platform where orbital currents drive new physics and open new avenues for novel quantum devices.