Dominant Spin Relaxation Mechanisms in Organic Semiconductor Alq3

Spin Relaxation Mechanisms in the Organic Semiconductor Alq3

Dynamic spin filtering at the Co/Alq3 interface mediated by weakly coupled second layer molecules

Spin filtering at organic-metal interfaces is often determined by the details of the interaction between the organic molecules and the inorganic magnets used as electrodes. Here we demonstrate a spin-filtering mechanism based on the dynamical spin relaxation of the long-living interface states formed by the magnet and weakly physisorbed molecules. We investigate the case of Alq3 on Co and, by c...

Spin-orbit coupling in organic spintronics1

I will talk about spin-orbit coupling (SOC) in π-conjugated organicmaterials and its effects on spin characteristics including the spin-relaxation time, spin-diffusion length, and g factor [1]. While π electrons are responsible for low-energy electrical and optical processes in π-conjugated organic solids, σ electrons must be explicitly included to properly describe the SOC. The SOC mixes upand...

Distinguishing spin relaxation mechanisms in organic semiconductors.

A theory is introduced for spin relaxation and spin diffusion of hopping carriers in a disordered system. For disorder described by a distribution of waiting times between hops (e.g., from multiple traps, site-energy disorder, and/or positional disorder) the dominant spin relaxation mechanisms in organic semiconductors (hyperfine, hopping-induced spin-orbit, and intrasite spin relaxation) each ...

Abstract for an Invited Paper for the MAR05 Meeting of The American Physical Society Spin Transport in Organic Semiconductors

for an Invited Paper for the MAR05 Meeting of The American Physical Society Spin Transport in Organic Semiconductors JING SHI, University of Utah Spin injection/detection and coherent transport are necessary ingredients in spin electronics or spintronics. Organic semiconductors are believed to have long spin coherence due to the weak spin-orbit interaction and hyperfine interaction; therefore, ...