Imperial College London
Alternate

ProfessorIainMcCulloch

Faculty of Natural Sciences, Department of Chemistry

Visiting Professor
 
 
 
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Contact

 

+44 (0)20 7594 5669i.mcculloch

 
 
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Location

 

Molecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Wang:2019:10.1038/s41928-019-0222-5,
author = {Wang, SJ and Venkateshvaran, D and Mahani, MR and Chopra, U and McNellis, ER and Di, Pietro R and Schott, S and Wittmann, A and Schweicher, G and Cubukcu, M and Kang, K and Carey, R and Wagner, TJ and Siebrecht, JNM and Wong, DPGH and Jacobs, IE and Aboljadayel, RO and Ionescu, A and Egorov, SA and Mueller, S and Zadvorna, O and Skalski, P and Jellett, C and Little, M and Marks, A and McCulloch, I and Wunderlich, J and Sinova, J and Sirringhaus, H},
doi = {10.1038/s41928-019-0222-5},
journal = {Nature Electronics},
pages = {98--107},
title = {Long spin diffusion lengths in doped conjugated polymers due to enhanced exchange coupling},
url = {http://dx.doi.org/10.1038/s41928-019-0222-5},
volume = {2},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - © 2019, The Author(s), under exclusive licence to Springer Nature Limited.  Carbon-based semiconductors such as conjugated organic polymers are of potential use in the development of spintronic devices and spin-based information processing. In particular, these materials offer a low spin–orbit coupling strength due to their relatively light constituent chemical elements, which should, in principle, favour long spin diffusion lengths. However, organic polymers are relatively disordered materials and typically have a carrier mobility that is orders of magnitude lower than crystalline inorganic materials. As a result, small spin diffusion lengths of around 50 nm have typically been measured using vertical organic spin valves. Here, we report measuring spin diffusion lengths in doped conjugated polymers using a lateral spin transport device architecture, which is based on spin pumping injection and inverse spin Hall detection. The approach suggests that long spin diffusion lengths of more than 1 μm and fast spin transit times of around 10 ns are possible in conjugated polymer systems when they have a sufficiently high spin density (around 10 20 cm −3 ). We explain these results in terms of an exchange-based spin diffusion regime in which the exchange interactions decouple spin and charge transport.
AU  - Wang,SJ
AU  - Venkateshvaran,D
AU  - Mahani,MR
AU  - Chopra,U
AU  - McNellis,ER
AU  - Di,Pietro R
AU  - Schott,S
AU  - Wittmann,A
AU  - Schweicher,G
AU  - Cubukcu,M
AU  - Kang,K
AU  - Carey,R
AU  - Wagner,TJ
AU  - Siebrecht,JNM
AU  - Wong,DPGH
AU  - Jacobs,IE
AU  - Aboljadayel,RO
AU  - Ionescu,A
AU  - Egorov,SA
AU  - Mueller,S
AU  - Zadvorna,O
AU  - Skalski,P
AU  - Jellett,C
AU  - Little,M
AU  - Marks,A
AU  - McCulloch,I
AU  - Wunderlich,J
AU  - Sinova,J
AU  - Sirringhaus,H
DO  - 10.1038/s41928-019-0222-5
EP  - 107
PY  - 2019///
SP  - 98
TI  - Long spin diffusion lengths in doped conjugated polymers due to enhanced exchange coupling
T2  - Nature Electronics
UR  - http://dx.doi.org/10.1038/s41928-019-0222-5
VL  - 2
ER  -
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