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

Masaki Tsuji | Zendy; Yuki Takahashi | Zendy; Y. Sakurai | Zendy; Yohei Yomogida | Zendy; Taishi Takenobu | Zendy; Yoshihiro Iwasa | Zendy; Kazuhiro Marumoto | Zendy

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

Author(s) -

Masaki Tsuji,

Yuki Takahashi,

Y. Sakurai,

Yohei Yomogida,

Taishi Takenobu,

Yoshihiro Iwasa,

Kazuhiro Marumoto

Publication year - 2013

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4800550

Subject(s) - magnetism , condensed matter physics , paramagnetism , materials science , magnetic semiconductor , charge carrier , charge (physics) , charge density , chemistry , physics , ferromagnetism , quantum mechanics

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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