Title :
Multiple Photonic Responses in Organic Magnetic Semiconductor V(TCNE)x(x ~ 2)
Author :
Epstein, A.J. ; Yoo, JinWoo ; Shima Edelstein, R. ; Lincoln, D.M. ; Raju, N.P. ; Pokhodnya, K.I. ; Miller, J.S.
Author_Institution :
Ohio State Univ., Columbus
Abstract :
A multiphotonic response in organic magnetic semiconductor V(TCNE)x (x ~ 2) with a substantial increase of conductivity induced by light (lambda=457.9 nm) is reported. Substantial decrease in activation energy for electronic hopping is due to temperature dependence of resistivity. Photoinduced effects that originated from structural changes triggered by pirarrpi* excitation in (TCNE)ldr- molecules, which leads to modulation of the magnetic exchange energy J and the activation energy DeltaE, is proposed. This mechanism for multiphotonic responses is supported by photoinduced IR studies.
Keywords :
electrical resistivity; hopping conduction; magnetic semiconductors; multiphoton processes; organic semiconductors; activation energy; conductivity; electronic hopping; magnetic exchange energy; multiphotonic response; organic magnetic semiconductor; photoinduced IR; photoinduced effects; pirarrpi* excitation; resistivity; structural changes; wavelength 457.9 nm; Conductivity; Magnetic anisotropy; Magnetic semiconductors; Magnetization; Magnetoelectronics; Metastasis; Optical polarization; Perpendicular magnetic anisotropy; Temperature;
Conference_Titel :
Biophotonics, Nanophotonics and Metamaterials, 2006. Metamaterials 2006. International Symposium on
Conference_Location :
Hangzhou
Print_ISBN :
0-7803-9773-8
DOI :
10.1109/METAMAT.2006.334981
