Spin Transport in Organic Semiconductors

Authored by: Valentin Dediu , Luis E. Hueso , Ilaria Bergenti

Spintronics Handbook: Spin Transport and Magnetism, Second Edition

Print publication date:  June  2019
Online publication date:  May  2019

Print ISBN: 9781498769600
eBook ISBN: 9780429434235
Adobe ISBN:

10.1201/9780429434235-5

 Download Chapter

 

Abstract

Recently, spintronics has expanded its choice of materials to the organic semiconductors (OSCs) [1–3]. OSCs offer unique properties toward their integration with spintronics, the main one being the weakness of the spin-scattering mechanisms in OSC. Spin–orbit coupling is very small in most OSCs; carbon has a low atomic number (Z) and the strength of the spin–orbit interaction (SOI) is in general proportional to Z4 [4]. Typical SOI values in OSC are less than about a few meV [5], well below any other characteristic energy, including main vibrational modes. Small spin–orbit coupling implies that the spin polarization of the carriers could be maintained for a very long time. Indeed, spin relaxation times in excess of 10 µs have been detected by various resonance techniques [6, 7], and these values compare very favorably (at least 103 times larger) with those obtained with high-performing inorganic semiconductors, such as GaAs [8].

 Cite
Search for more...
Back to top

Use of cookies on this website

We are using cookies to provide statistics that help us give you the best experience of our site. You can find out more in our Privacy Policy. By continuing to use the site you are agreeing to our use of cookies.