Related Experiment Video
Updated: Aug 1, 2026

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene
Published on: July 3, 2015
Gate-induced band ferromagnetism in an organic polymer
Ryotaro Arita1, Yuji Suwa, Kazuhiko Kuroki
1Department of Physics, University of Tokyo, Hongo, Tokyo 113-0033, Japan.
Abstract:
We propose that a chain of five-membered rings (polyaminotriazole) should be ferromagnetic with an appropriate doping that is envisaged to be feasible with a field-effect transistor structure. The ferromagnetism is confirmed by a spin density functional calculation, which also shows that ferromagnetism survives the Peierls instability. We explain the magnetism in terms of the Mielke and Tasaki flatband ferromagnetism with the Hubbard model. This opens a new possibility of band ferromagnetism in purely organic polymers.
Related Concept Videos
Radical Chain-Growth Polymerization: Mechanism
Anionic Chain-Growth Polymerization: Overview
Anionic Chain-Growth Polymerization: Mechanism
Cationic Chain-Growth Polymerization: Mechanism
Ziegler–Natta Chain-Growth Polymerization: Overview
π Electron Effects on Chemical Shift: Overview

