The frequency, temperature, and magnetic field dependence of ferromagnetic resonance and anti-resonance in La${}_{0.8}$Sr${}_{0.2}$MnO${}_3$

Andrew Schwartz, Marc Scheffler, Steven M. Anlage

Employing a broadband microwave reflection configuration, we have measured the complex surface impedance, $Z_S(\omega ,T,H)$, of single crystal La${}_{0.8}$Sr${}_{0.2}$MnO${}_3$, as a function…