Title :
Cavity-enhanced Kerr effect for magneto-optic spectroscopy of nanostructures
Author :
Qureshi, Naser ; Schmidt, Holger ; Hawkins, Aaron
Author_Institution :
Dept. of Electr. Eng., California Univ., Santa Cruz, CA, USA
Abstract :
The magneto-optical Kerr effect (MOKE) is commonly used in time-resolved measurements of magnetization. A technique is presented to amplify this rotation and improve the signal-to-noise ratio in measurements of the very small polarization changes that are needed to measure magnetization reversal in single domain nanomagnets. The largest cavity-induced enhancement to date, a factor of 16.25, was observed. Enhancement of up to three orders of magnitude is possible with optimized structures.
Keywords :
Kerr magneto-optical effect; dielectric materials; dielectric thin films; magnetic domains; magnets; nanostructured materials; nickel; silicon compounds; MOKE; Ni-SiO2; cavity enhanced magneto-optical Kerr effect; magnetization; magneto optic spectroscopy; nanostructures; optimized domain structures; polarization; signal-noise ratio; single domain nanomagnets; Dielectric losses; Kerr effect; Magnetic domains; Magnetization; Magnetooptic effects; Nanostructures; Optical polarization; Optical reflection; Rotation measurement; Spectroscopy;
Conference_Titel :
Nanotechnology, 2003. IEEE-NANO 2003. 2003 Third IEEE Conference on
Print_ISBN :
0-7803-7976-4
DOI :
10.1109/NANO.2003.1231744
