The objective of this research is to understand the spin dynamics of charge to spin conversion in topological insulators. Charge to spin conversion is expected to be ultrafast, since it relies on band structure details as opposed to spin dependent scattering in heavy metals. Little is known about the spin dynamics of topological insulators.

You will participate in a group effort to experimentally observe spin dynamics of topological insulators, using optical and electrical means.

A second objective is to combine the ultrafast spin dynamics of topological insulators with antiferromagnets. Here the goal is to switch the Neel vector of an antiferromagnetic material at near THz frequencies.

Through combined fabrication, characterization and theory efforts, this large program at NRL will enable topological devices. The scientific goals have relevance to maximize efficiency in the next generation of low power computing technology, information processing, on chip THz communication, in-logic memory.

key words

Topological insulator; Antiferromagnet; Spin dynamics; Spintronics; Spin torque; THz; Nano oscillator

Citizenship:  Open to U.S. citizens and permanent residents

Level:  Open to Postdoctoral applicants