Details

Autor(en) / Beteiligte

• Nuccio, L
• Willis, M
• Schulz, L
• Fratini, S
• Messina, F
• D'Amico, M
• Pratt, F L
• Lord, J S
• McKenzie, I
• Loth, M
• Purushothaman, B
• Anthony, J
• Heeney, M
• Wilson, R M
• Hernández, I
• Cannas, M
• Sedlak, K
• Kreouzis, T
• Gillin, W P
• Bernhard, C
• Drew, A J

Titel

Importance of spin-orbit interaction for the electron spin relaxation in organic semiconductors

Ist Teil von

• Physical review letters, 2013-05, Vol.110 (21), p.216602-216602, Article 216602

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2013

Quelle

PROLA

Beschreibungen/Notizen

• Despite the great interest organic spintronics has recently attracted, there is only a partial understanding of the fundamental physics behind electron spin relaxation in organic semiconductors. Mechanisms based on hyperfine interaction have been demonstrated, but the role of the spin-orbit interaction remains elusive. Here, we report muon spin spectroscopy and time-resolved photoluminescence measurements on two series of molecular semiconductors in which the strength of the spin-orbit interaction has been systematically modified with a targeted chemical substitution of different atoms at a particular molecular site. We find that the spin-orbit interaction is a significant source of electron spin relaxation in these materials.