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Electromagnetic Waves Absorption by Graphene-Magnetic Semiconductor Multilayered Nanostructure in External Magnetic Field: Voight Geometry

100%
Kuzmin D., Bychkov I., Shavrov V.
Acta Physica Polonica A
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2015
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vol. 127
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issue 2
528-530
EN
Absorption of electromagnetic waves by graphene-magnetic semiconductor multilayered structure has been investigated for the Voight geometry with taking into account the dissipation processes. The possibility of control of electrodynamic properties of the structure by an external magnetic field, changing in number of periods of the structure, chemical potential of the graphene layers and temperature has been shown. Electrodynamics of the structure is also sensitive to polarization of the incident wave. The structure shows to be especially controllable at terahertz frequencies.
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Electromagnetic Waves Generation in Ni_{2.14}Mn_{0.81}GaFe_{0.05} Heusler Alloy at Structural Phase Transition

76%
Bychkov I., Kuzmin D., Kalenov D., Kamantsev A., Koledov V., Kuchin D., Shavrov V.
Acta Physica Polonica A
|
2015
|
vol. 127
|
issue 2
588-590
EN
Electromagnetic waves generated by the Heusler alloy Ni_{2.14}Mn_{0.81}GaFe_{0.05} at structural phase transition was detected in the frequency range of 28-32 GHz. Influence of the kinetics of phase transitions on the nature of the sample millimeter radiation was studied as well. It has been observed that the contribution of the intrinsic radiation increases with increasing of the heating/cooling rate. The possible mechanisms and theory of such effect is discussed. It is shown that the maximum radiation intensity should be emitted in direction perpendicular to the movement of interphase boundary.
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