Wave propagation: Difference between revisions

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'''The inverse Faraday effect''' is the effect opposite to the [[Faraday effect]]. A static [[magnetization]] <math>\vec{M}(0)</math> is induced by an external oscillating [[electrical field]] with the frequency <math>\omega</math>, which can be achieved with a high intensity [[laser]] pulse for example. The induced magnetization is proportional to the vector product of <math>\vec{E}</math> and <math>\vec{E}^*</math>:
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<math>\vec{M}(0)\propto[\vec{E}(\omega)\times\vec{E}^*(\omega)]</math>
 
From this equation we see that the circularly polarized light with the frequency <math>\omega</math> should induce a magnetization along the [[wave vector]] <math>\vec{k}</math>. Because <math>\vec{E}</math> is in the [[vector product]], left- and right-handed [[Polarization (waves)|polarization]] waves should induce magnetization of opposite signs.
 
The induced magnetization is comparable to the saturated magnetization of the media.
 
== References ==
*R. Hertel, ''Microscopic theory of the inverse Faraday effect'', http://arxiv.org/abs/cond-mat/0509060 (2005)
*A. V. Kimel, A. Kirilyuk, P. A. Usachev, R. V. Pisarev, A. M. Balbashov and Th. Rasing, ''Ultrafast non-thermal control of magnetization by instantaneous photomagnetic pulses'', Nature 435, 655-657 (2005)
 
[[Category:Optical phenomena]]
[[Category:Electric and magnetic fields in matter]]

Latest revision as of 04:00, 19 April 2014

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