Multiple photonic responses in films of organic-based magnetic semiconductor V(TCNE)x, x approximately 2.
Concomitant photoinduced magnetic and electrical phenomena are reported for the organic-based magnetic semiconductor V(TCNE)x (x approximately 2; TCNE=tetracyanoethylene; magnetic ordering temperature Tc approximately 400 K). Upon optical excitation (457.9 nm), the system can be trapped in a thermally reversible photoexcited state, which exhibits reduced magnetic susceptibility and increased conductivity with a simultaneous change in IR absorption spectrum. The multiple photonic effects in V(TCNE)x are proposed to originate from structural changes induced by internal excitation in (TCNE)- anions, which lead to relaxation to a long-lived metastable state.
Yoo
Jung-Woo
JW
Department of Physics, The Ohio State University, Columbus, Ohio 43210-1117, USA.
Edelstein
R Shima
RS
Lincoln
D M
DM
Raju
N P
NP
Xia
C
C
Pokhodnya
K I
KI
Miller
Joel S
JS
Epstein
A J
AJ