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

fYear

2006

fDate

16-18 Oct. 2006

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Biophotonics, Nanophotonics and Metamaterials, 2006. Metamaterials 2006. International Symposium on

Conference_Location

Hangzhou

Print_ISBN

0-7803-9773-8

Type

conf

DOI

10.1109/METAMAT.2006.334981

Filename

4134720