Adjusted oscillator strength matching for hybrid magnetic and electric excitations in Dy3Fe5O12 garnet

Rogers, P. D.; Choi, Y. J.; Standard, E. C.; Kang, T. D.; Ahn, K. H.; Dubroka, A.; Marsik, P.; Wang, Ch.; Bernhard, C.; Park, S.; Cheong, S. -W.; Kotelyanskii, M.; Sirenko, A. A.

doi:10.1103/PhysRevB.83.174407

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Adjusted oscillator strength matching for hybrid magnetic and electric excitations in Dy3Fe5O12 garnet

Rogers, P. D.;
Choi, Y. J.;
Standard, E. C.;
Kang, T. D.;
Ahn, K. H.;
... Park, S.;
외 7명

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초록

Far-infrared spectra of magnetodielectric Dy3Fe5O12 garnet were studied using a combination of transmittance, reflectivity, and rotating analyzer ellipsometry. In addition to purely dielectric and magnetic modes, we observed several hybrid modes with a mixed magnetic and electric dipole activity. Using 4 x 4 matrix formalism for materials with mu(omega) not equal 1, we modeled the experimental optical spectra and determined the far-infrared dielectric and magnetic permeability functions. The matching condition mu(omega(h))S-e = epsilon(omega(h))S-m for the oscillator strengths S-e(m) explains the observed vanishing of certain hybrid modes omega(h) in reflectivity.

키워드

TERBIUM IRON-GARNET; FAR-INFRARED SPECTRA; MEDIA

제목: Adjusted oscillator strength matching for hybrid magnetic and electric excitations in Dy3Fe5O12 garnet

저자: Rogers, P. D.; Choi, Y. J.; Standard, E. C.; Kang, T. D.; Ahn, K. H.; Dubroka, A.; Marsik, P.; Wang, Ch.; Bernhard, C.; Park, S.; Cheong, S. -W.; Kotelyanskii, M.; Sirenko, A. A.

DOI: 10.1103/PhysRevB.83.174407

발행일: 2011-05

유형: Article

저널명: Physical Review B

권: 83

호: 17

언어: ENG

출판사: AMER PHYSICAL SOC

발행국가: 미국

ISSN: E 2469-9969
P 1098-0121