Electrical Control of Magnetic Resonance in Phase Change Materials.

ABSTRACT: Metal-insulator transitions (MITs) in resistive switching materials can be triggered by an electric stimulus that produces significant changes in the electrical response. When these phases have distinct magnetic characteristics, dramatic changes in the spin excitations are also expected. The transition metal oxide La_0.7Sr_0.3MnO₃ (LSMO) is a ferromagnetic metal at low temperatures and a paramagnetic insulator above room temperature. When LSMO is in its metallic phase, a critical electrical bias has been shown to lead to an MIT that results in the formation of a paramagnetic resistive barrier transverse to the applied electric field. Using spin-transfer ferromagnetic resonance spectroscopy, we show that even for electrical biases less than the critical value

SUBMITTER: Chen TY 

PROVIDER: S-EPMC11421091 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature