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

doi:10.1039/c4dt00071d

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

SCI - Physics

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

11 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 language	English
Pages (from-to)	10040-10045
Number of pages	6
Journal	Dalton Transactions
Volume	43
Issue number	26
DOIs	https://doi.org/10.1039/c4dt00071d
Publication status	Published - 2014 Jul 14

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AU - Phan, Quynh T.N.

AU - Heguri, Satoshi

AU - Tanabe, Yoichi

AU - Shimotani, Hidekazu

AU - Nakano, Takehito

AU - Nozue, Yasuo

AU - Tanigaki, Katsumi

PY - 2014/7/14

Y1 - 2014/7/14

N2 - 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.

AB - 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.

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Tuning of the ground state in electron doped anthracene

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