Towards a table-top microscope for nanoscale magnetic imaging using picosecond thermal gradients.

ABSTRACT: Research advancement in magnetoelectronics is challenged by the lack of a table-top magnetic measurement technique with the simultaneous temporal and spatial resolution necessary for characterizing magnetization dynamics in devices of interest, such as magnetic memory and spin torque oscillators. Although magneto-optical microscopy provides superb temporal resolution, its spatial resolution is fundamentally limited by optical diffraction. To address this challenge, we study heat rather than light as a vehicle to stroboscopically transduce a local magnetic moment into an electrical signal while retaining picosecond temporal resolution. Using this concept, we demonstrate spatiotemporal magnetic microscopy using the time-resolved anomalous Nernst effect (TRANE). Experimentally and with suppor

SUBMITTER: Bartell JM 

PROVIDER: S-EPMC4598727 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature