Metal-insulator transition in AC{sub 60}:RbC{sub 60} and KC{sub 60}

Journal Article · Mon Sep 01 00:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.6627· OSTI ID:542623

Khazeni, K; Crespi, V H; Hone, J; Zettl, A; Cohen, M L ^[1]

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1. Department of Physics, University of California at Berkeley, Berkeley, California 94720 (United States)

At zero pressure polymerized RbC{sub 60} is an insulator, whereas polymerized KC{sub 60} is a metal with a slight low-temperature resistive upturn. We report measurements of the resistivity of RbC{sub 60} under pressure, finding a hysteretic resistive transition in RbC{sub 60} near 200 K at 5 kbar, at which point the material transforms from insulator to metal. Correcting the resistivity to constant volume, both materials are metallic below the transition with a common low-temperature resistive upturn which is suppressed under compression. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 542623
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 11 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELECTRIC CONDUCTIVITY
ELECTRIC IMPEDANCE
FULLERENES
HIGH PRESSURE
POTASSIUM COMPOUNDS
PRESSURE DEPENDENCE
RUBIDIUM COMPOUNDS