Tuning of the ground state in electron doped anthracene

Quynh T.N. Phan, Satoshi Heguri, Yoichi Tanabe, Hidekazu Shimotani, Takehito Nakano, Yasuo Nozue, Katsumi Tanigaki

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

High quality bulk samples of anthracene (AN) doped with potassium (K) in 1 : 1 and 2 : 1 stoichiometries were successfully prepared by a method involving a room temperature solid-state mechanical diffusion process prior to intercalation reactions during heat treatment, and their physical properties were studied using both magnetic and optical measurements. The transfer of almost one electron from K to AN in K1(AN) was confirmed by SQUID and ESR measurements. A pronounced magnetic hump centered at 150 K associated with antiferromagnetic interactions was observed, which can most likely be interpreted in terms of on-site Coulomb repulsions of the Mott insulating states. Optical spectra of K1(AN) clearly showed the insulating states, as well as the electron occupation of the LUMO-derived band of AN. Our results demonstrated tuning of the ground state of a typical bulk hydrocarbon by alkali metal intercalation.

Original languageEnglish
Pages (from-to)10040-10045
Number of pages6
JournalDalton Transactions
Volume43
Issue number26
DOIs
Publication statusPublished - 2014 Jul 14

ASJC Scopus subject areas

  • Inorganic Chemistry

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