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
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