Long-range surface magnetoplasmons in thin nickel films.

We present the results of a theoretical and experimental investigation of long-range surface magnetoplasmons in thin, magnetic metal films. With a transversely applied magnetic field, the reflectance modulation measurements from prism-coupled modes in nickel films are in agreement with the theory. The reflectance modulation is the same order of magnitude for prism-coupled long-range and single-interface magnetoplasmons.