Oral: Strain tunable magnetotransport in Mn₃Si₂Te₆

Tuning physical properties under external stimuli has been proven to be an effective way to explore the novel functionality of the material. Among all the stimuli, strain is one of the most accessible control knobs. In this context van der Waals (vdW) materials, due to their extraordinary mechanical properties, are suitable candidates. Recently, the discovery of unconventional Colossal magnetoresistance (CMR) in quasi-layered Mn₃Si₂Te₆ has inspired the research community to explore its functionality under various conditions, including current, gating, doping, and pressure.

In this work, we present our recent observations of magnetotransport of Mn₃Si₂Te₆ device, fabricated on flexible substrate. By bending these devices, we were able to apply the strain of varying magnitudes. We measured the temperature dependence of magnetotransport under different strain strengths. Our results show that strain can effectively control the unconventional CMR in Mn₃Si₂Te₆. This study will help to understand the underlying mechanisms of such unconventional CMR as well as provides the direction for the development of strain-engineered CMR devices.