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Probing the transverse magneto‐optical Kerr effect at the nanoscale
Author(s) -
AlvarezPrado L.M.,
Souche Y.,
Carminati R.
Publication year - 2007
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200675353
Subject(s) - physics , magneto optic kerr effect , magneto optical , near field scanning optical microscope , optics , transverse plane , magnetic field , formalism (music) , reciprocity (cultural anthropology) , nanoscopic scale , kerr effect , thin film , optical microscope , aperture (computer memory) , magnetic domain , condensed matter physics , magnetization , quantum mechanics , scanning electron microscope , art , musical , social psychology , psychology , structural engineering , nonlinear system , acoustics , visual arts , engineering
This article presents a theoretical formalism for a magneto‐optical scanning near‐field microscope (MO‐SNOM) in the transverse magneto‐optical Kerr effect configuration. Polarized light emitted by a nanosource is scattered by the magnetic object towards the detector. The nanosource is modelled as a circular aperture in an infinitely thin, perfectly conducting screen following the Bethe–Bouwkamp model. The theorem of reciprocity is used for calculating the detected signal in a constant‐height scanning mode for a Co thin film pattern. Two magnetic distributions are investigated: the single domain and the Bloch wall. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)