Magnetic linear dichroism in absorption spectroscopy of EuTe
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
20/10/2012
20/10/2012
2008
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Resumo |
The magnetic linear dichroism (MLD) at band-edge photon energies in the Voigt geometry was calculated for EuTe. At the spin-flop transition, MLD shows a step-like increase. Above the spin-flop transition MLD slowly decreases and becomes zero when the averaged electronic charge becomes symmetric relative to the axis of light propagation. Further increase of the magnetic field causes ferromagnetic alignment of the spins along the magnetic field direction, and MLD is recovered but with an opposite sign, and reaches maximum absolute values. These results are explained by the rearrangement of the Eu(2+) spin distribution in the crystal lattice as a function of magnetic field, due to the Zeeman interaction, demonstrating that MLD can be a sensitive probe of the spin order in EuTe, and provides information that is not accessible from other magneto-optical techniques, such as magnetic circular dichroism measurement studies. |
Identificador |
JOURNAL OF PHYSICS-CONDENSED MATTER, v.20, n.25, 2008 0953-8984 http://producao.usp.br/handle/BDPI/29602 10.1088/0953-8984/20/25/255209 |
Idioma(s) |
eng |
Publicador |
IOP PUBLISHING LTD |
Relação |
Journal of Physics-condensed Matter |
Direitos |
restrictedAccess Copyright IOP PUBLISHING LTD |
Palavras-Chave | #EUROPIUM CHALCOGENIDES #OPTICAL-PROPERTIES #Physics, Condensed Matter |
Tipo |
article original article publishedVersion |