Giant optical splitting in the spin-states assisting a sharp magnetic switching in GdN thin films

authors	Vidyasagar, R; Kita, T; Sakurai, T; Ohta, H
journal	APPLIED PHYSICS LETTERS
abstract	The spin-states splitting and spin ordering in the band structure of GdN thin films have been studied using optical absorbance spectroscopy and magnetometer. Remarkably, the optical absorbance measurements indicate a giant splitting in the spin-states near-infrared frequency regime, through which the spin-up and spin-down states of the GdN films have been evaluated. Both the spin-up and spin-down states split subsequently wider, which attributes to a combining effect from the nitrogen vacancies, and the population of electronic states pertaining to the spins associated with 4f states of Gd3+ ions. While spin-splitting energy enhances, magnetic-hysteresis loops suggest a sharp magnetic switching feature. (C) 2013 AIP Publishing LLC.
publisher	AMER INST PHYSICS
issn	0003-6951
year published	2013
volume	102
issue	22
digital object identifier (doi)	10.1063/1.4809758
web of science category	Physics, Applied
subject category	Physics
unique article identifier	WOS:000320621600050