Spin waves interference from rising and falling edges of electrical pulses

TL;DR

This paper explores how the edges of electrical pulses influence spin wave interference in NiFe strips, revealing conditions for maximizing spin wave intensity through constructive or destructive interference.

Contribution

It demonstrates the impact of pulse edge timing on spin wave interference and provides conditions to optimize spin wave packet intensity in magnetic materials.

Findings

Edge timing affects spin wave interference patterns

Constructive interference enhances spin wave amplitude

Destructive interference reduces spin wave amplitude

Abstract

The authors have investigated the effect of the electrical pulse width of input excitations on the generated spin waves in a NiFe strip using pulse inductive time domain measurements. The authors have shown that the spin waves resulting from the rising- and the falling-edges of input excitation pulses interfere either constructively or destructively, and have provided conditions for obtaining spin wave packets with maximum intensity at different bias conditions.