Local and spatial disorder in β"-(ET)2SF5RSO3 solid solutions (R = CH2CF2, CHF, CHFCF2)

被引：8

作者：

Garlach, AD

Musfeldt, JL ^{[1
]}

Pigos, JM

Jones, BR

Olejniczak, I

Graja, A

Whangbo, MH

Schlueter, JA

Geiser, U

Winter, RW

Gard, GL

机构：

[1] Univ Tennessee, Dept Chem, Knoxville, TN 37932 USA

[2] SUNY Binghamton, Dept Chem, Binghamton, NY 13902 USA

[3] Polish Acad Sci, Inst Mol Phys, PL-60479 Poznan, Poland

[4] N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA

[5] Argonne Natl Lab, Div Chem & Mat Sci, Argonne, IL 60439 USA

[6] Portland State Univ, Dept Chem, Portland, OR 97207 USA

来源：

CHEMISTRY OF MATERIALS | 2002年 / 14卷 / 07期

关键词：

D O I：

10.1021/cm010378b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the polarized infrared reflectance spectra and optical conductivity of beta"-(ET)(2)SF5RSO3 superconducting (R = CH2CF2), metallic (R = CHF), and metal-insulator (R = CHFCF2) mixed crystal materials. Incorporation of chiral counterions in the superconducting matrix allows us to tune the physical and spectroscopic properties over the composition range by modulating the anion potential. We conclude that the two low-energy electronic excitations at 5200 and 9600 cm(-1) are spectral manifestations of charge localization in the ET stack, made manifest by both local (anion pocket) and spatial (positional) disorder.

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页码：2969 / 2976

页数：8

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