Two-dimensional magnetic interactions and magnetism of high-density charges in a polymer transistor

Masaki Tsuji; Yuki Takahashi; Yuki Sakurai; Yohei Yomogida; Taishi Takenobu; Yoshihiro Iwasa; Kazuhiro Marumoto

doi:10.1063/1.4800550

Two-dimensional magnetic interactions and magnetism of high-density charges in a polymer transistor

Masaki Tsuji^*, Yuki Takahashi, Yuki Sakurai, Yohei Yomogida, Taishi Takenobu, Yoshihiro Iwasa, Kazuhiro Marumoto

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Magnetic interactions and magnetism of high-density charges in a polymer transistor were investigated by electron spin resonance (ESR). The anisotropy of the ESR spectra indicated an edge-on molecular orientation and the existence of two-dimensional magnetic interactions between the spins of the charges, reflecting high charge density. The voltage dependences revealed that the magnetism of charge carriers changed from paramagnetic to nonmagnetic as charge density increased. These results provide insight to the charge transport mechanism of polymer semiconductors with high charge densities.

Original language	English
Article number	133301
Journal	Applied Physics Letters
Volume	102
Issue number	13
DOIs	https://doi.org/10.1063/1.4800550
Publication status	Published - 2013 Apr 1

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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AU - Takahashi, Yuki

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AU - Takenobu, Taishi

AU - Iwasa, Yoshihiro

AU - Marumoto, Kazuhiro

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AB - Magnetic interactions and magnetism of high-density charges in a polymer transistor were investigated by electron spin resonance (ESR). The anisotropy of the ESR spectra indicated an edge-on molecular orientation and the existence of two-dimensional magnetic interactions between the spins of the charges, reflecting high charge density. The voltage dependences revealed that the magnetism of charge carriers changed from paramagnetic to nonmagnetic as charge density increased. These results provide insight to the charge transport mechanism of polymer semiconductors with high charge densities.

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Two-dimensional magnetic interactions and magnetism of high-density charges in a polymer transistor

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